Machine Design and Shop Practice (MDSP) Inhouse Practice Exam

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• Which of the following is the major alloying element of Invar?
• For evenly distributed and uniform wear on each meshing gear tooth, the ideal design practice is to consider a:
• Which brake shoe develops a self-energizing action because the friction force tends to draw the shoe more tightly into the rotating drum?
• The designer intends a fit that guarantees running clearance under all manufacturing conditions. Which fit type should be specified?
• Backlash is the difference between which features? (measured on the pitch circle)
• In watchmaking, which gear type is commonly used due to its tooth profile?
• A sleeve bearing is required to operate without continuous lubrication in a light-duty conveyor. Which design parameter should be checked FIRST before approving this application?
• Which type of gear is used when shaft axes are offset from each other?
• Which element is a ferritic stabilizer?
• Which line convention is used to represent features that cannot be seen directly in the current viewing direction?
• In high-speed steel, which element is a main constituent along with chromium and vanadium?
• Plastics are:
• Rolling contact bearings as compared to sliding contact bearings have which of the following characteristics?
• Which material designation designates Music Wire?
• The maximum-strain theory which applies only in the elastic range of stresses is also known as which theory?
• For spur gears used in machine tool gearboxes, the minimum contact ratio should be more than which value?
• Which cast iron consists of carbon in rosette form?
• Which alloy is known for free machining and corrosion resistance equivalent to copper?
• In roller chain lubrication, which method uses a circulating pump to supply a continuous flow of oil inside the chain loop across the width and directly at the slack strand?
• Which property is most directly related to the surface endurance limit of a gear material?
• In a simple gear train, if the number of idler gears is odd, the direction of motion of the driven gear will be the same as the driving gear.
• Spiral gears are suitable for transmitting
• The gear train in which the first and last gear are on the same axis is known as which type?
• Spelter refers to which metal when used as brazing filler metal?
• Which welding process is described as welding by local fusion with or without filler and was developed later, used in WWI ships?
• Which manufacturing method is used for high-volume, net-shaped gear production?
• Stress concentration in cyclic loading is more serious in which type of material?
• In machine elements, variable loading is best characterized as:
• Which operation is used to enlarge a drilled hole to the exact size and improve its finish, without significantly altering the hole location?
• Which workholding device is preferred in high-production turning operations involving accurately sized bar stock?
• The friction material of the clutch should have
• Which mechanism is an inversion of the double slider-crank chain?
• In a slider-crank mechanism, the maximum acceleration of the slider occurs when the crank is at which position?
• Who postulated the maximum distortion energy theory?
• In a reverted gear train, the input and output shafts are coaxial.
• Constantan is an alloy of copper and nickel.
• In bolt design, the quotient of the proof load and the tensile-stress area is called
• The shape of cantilever for uniformly distributed load will be:
• Which type of coupling is most appropriate for connecting two shafts having a small amount of parallel and angular misalignment while transmitting moderate torque?
• Which polymer is formed from chloroprene of the monovinyl acetylene type?
• To maximize energy storage of a flywheel at a fixed speed, you should concentrate more mass near the rim rather than near the hub.
• Gear used to transmit power at high velocity ratios between non-intersecting shafts that are usually but not necessarily at right angle.
• During gear hobbing, which motion is synchronized with the hob's rotation to create the correct tooth profile?
• The train value of gear train is _____________.
• Plasticizers added to plastics primarily increase which property?
• During fatigue analysis, which quantity expresses the relationship between the alternating stress and the mean stress?
• The main function of an automobile gearbox is
• A shaft drawing contains the notation R6 at the corner between two surfaces. This indicates
• Which ASTM specification corresponds to Chrome Vanadium Spring steel commonly used in fatigue-resistant applications?
• Which statement is correct about the use of multiple threads in power screws?
• Davis steering gear consists of which type of pairs?
• Ackermann steering gear consists of which type of pairs?
• A bearing is designated by the number 410. It means that it is a bearing of which type?
• Which power transmission method is most suitable in an environment with oil contamination?
• Which line type is used to denote features not visible in the current view?
• An offset provided in radial cam-translating-follower mechanism serves to:
• Borax is applied to parts to be brazed in order to:
• Elastic nut is a locking device in which
• Is an acceleration parameter (with units of gravities) that depends on the natural frequency and the change in velocity, due to shock.
• Which of the following is the ratio of the fatigue strength without a stress concentration to the fatigue stress with a stress concentration?
• Increasing the stiffness of springs in a centrifugal clutch affects engagement speed how?
• Which screw thread is adaptable to split type nut?
• In a belt drive, the pulley acts as which type of kinematic pair?
• In assembly practice, which joint type is generally not intended to be disassembled without damaging the components?
• In a shaft, a key capable of tilting in a recess milled out in a shaft is known as?
• Addition of vanadium to steel improves which property?
• The bearing characteristic number in a hydrodynamic bearing depends upon
• In a drawing, the notation R6 at the corner between two surfaces indicates what?
• What factor quantifies the stress amplification at a geometric discontinuity?
• Under the ANSI system of orthographic projection, the right-side view is located relative to the front view where?
• Which drawing is primarily prepared to show the relationship and fit of individual parts after fabrication?
• Which of the following will best describe sunk key?
• Which factor is defined as the ratio of the maximum stress at a discontinuity to the calculated nominal stress?
• In a double-riveted lap joint subjected to eccentric loading, why are the outer rivets generally more highly stressed?
• Which thread form is used for the lead screw of a lathe?
• Which alloy is best described as a nickel-based superalloy designed for high-temperature strength in aerospace applications?
• A mechanical press experiences highly fluctuating torque during every working stroke. Which flywheel property primarily allows it to smooth the speed variation?
• In a kinematic chain, replacing a quaternary joint with an equivalent arrangement involves how many binary joints?
• Thread stripping in a nut is most likely when:
• During an over-speed condition, which component of a cast-iron flywheel is most prone to failure first?
• Invar alloy is primarily alloyed with which element to achieve its characteristic properties?
• In flange coupling, torque is carried by bolts via which mechanism?
• A milling operation that machines two opposite sides of a workpiece at the same time is called?
• A centrifugal clutch's engagement speed is affected by spring stiffness. What is the effect when stiffness increases?
• A key that transmits power through frictional resistance only is
• A passenger vehicle braking system in which a rotor is squeezed from both sides by friction linings mounted in a housing is known as which brake type?
• In a belt drive where belts share load unevenly, what is the most likely consequence?
• A four-bar chain has
• Under axial load, each section of a close-coiled helical spring is subjected to
• Which pairing of gases is commonly used as shielding gas in tungsten arc welding?
• Which type of gears is used for noiseless operation?
• In a four-bar mechanism, the center of gravity of the coupler link would experience which type of acceleration?
• Which of the following is not a correct procedure to increase the fatigue limit?
• Which condition describes a surface that is comparatively free of stress?
• Operating a flywheel in a vacuum chamber primarily reduces windage losses.
• Path of contact in involute gears is which of the following?
• Which option represents a single crystal grown by vapor deposition?
• Which drilling machine is typically used for machining large, heavy workpieces that cannot be conveniently repositioned during operation?
• For a flat-faced follower against a cam, increasing eccentricity primarily affects the follower's
• In a concrete mixer, the bevel gears for rotating the drum are generally made by
• Which of the following keys is preferred for transmitting a large amount of impact-type torque in both directions?
• A member is subjected to a loading cycle where the stress varies from zero to a maximum tensile value before returning to zero. This loading is classified as:
• Which welding process uses a non-consumable tungsten electrode and is shielded by a gas, usually argon or helium?
• According to Hooke's Law, within the proportional limit, which statement best describes the relationship between stress and strain?
• Which law governs the condition for continuous rotation in a planar four-bar linkage?
• Which mineral has Mohs hardness of 5?
• Which alloy contains 40% to 60% copper with the remainder nickel and is used in thermocouples?
• The example of a lower pair is
• A flat-faced follower operates against a cam whose profile is an eccentric circle. As the eccentricity increases, what happens to the follower displacement?
• Degrees of polymerization for commercial plastics are usually less than which of the following values?
• Which mechanism is typically used to connect two shafts with misalignment, known as Oldham's coupling?
• According to Petroff's equation for lightly loaded journal bearings, the coefficient of friction between the journal and the bearing is directly proportional to which factor?
• If the effective driving tension remains constant while the belt velocity is doubled, the power transmitted becomes?
• When meshed with a gear, it is used to change rotary motion to reciprocating motion.
• When the hole is smaller than the shaft, the allowance is said to be negative and is termed.
• Which of the following type of fastener has a trilobe thread structure?
• If two intersecting shafts transmit rotary motion and the angle between them varies during operation, which coupling is appropriate?
• A drafter draws equally spaced thin lines inside a cut surface. These lines are called
• Which line type is used to extend dimensions on a drawing beyond the object?
• Which alloy is available in five slightly different nominal composition for applications that require high strength, good fabricating and fusing qualities, immunity to rust, free machining and a corrosion resistance equivalent to copper?
• Number of critical speeds for any shaft is
• For collinear shafts with easy manufacturing prioritized over dismantling ease, which coupling is commonly used?
• In the designation Ø40 H7/g6, which aspect does the 'H7' represent?
• Which design modification most effectively increases the energy storage capacity of a flywheel without increasing its rotational speed?
• A bolt connecting a vibrating machine base fractured at the thread root after several months of service. Beach marks on the fracture surface indicate which failure mechanism?
• When the velocity ratio is high and space is limited, which gear should be used?
• Tubular gears are the gears used in which device to reverse rotation?
• Two bevel gears with equal teeth and equal pitch angle used to transmit power between shafts that intersect at right angle are called
• If two shafts are neither parallel nor intersecting, power can be transmitted by using spiral gears.
• Rolling without slipping describes the contact condition between a belt and pulley in a belt drive. Which of the following best expresses this?
• Degrees of polymerization for commercial plastics are usually less than:
• Which key is generally NOT recommended for transmitting heavy torque because no keyway is cut into the shaft?
• Which coupling is commonly selected when the shafts are collinear, permanently aligned, and ease of manufacturing is more important than ease of dismantling?
• Which property of a clutch friction material is most important for reliable engagement under load?
• Which process is used to refine bauxite to alumina in aluminum production?
• Chromium acts as a ferritic stabilizer.
• Which mechanism represents an inversion of a single slider-crank chain?
• When a circular hole in a metal plate expands uniformly with temperature, how does the hole area change relative to the plate area?
• Permissible bending stress for a gear tooth is usually taken as which of the following?
• Eye bolts are used for
• Autofrettage is a method of
• In belt-drive terminology, the angle subtended by the belt while in contact with the pulley is known as the
• Which term describes a material whose properties are identical in all directions?
• Nodular cast iron contains graphite in what form?
• Which type of gears are used for shaft axes having an offset?
• Rectangular bar in a rectangular hole is an example of which type of kinematic pair?
• A single crystal grown by vapor deposition is commonly referred to as what?
• The angle at the base cylinder of an involute gear, that the tooth makes with the gear axis.
• A flange coupling is transmitting torque through fitted bolts. Which assumption is generally adopted in its design?
• What is the other name for Kennedy key?
• Which type of nut is designed to be tightened by hand without a wrench?
• If numerous shallow pits are observed on the raceways of a bearing after several thousand hours of service, the damage is most likely caused by which of the following?
• A thin film bearing is a bearing
• Shaft revolving in a bearing is the following type of pair
• Which hardness test is based on measuring the depth of indentation to determine hardness?
• A supplier mistakenly ships ASTM A229 spring wire instead of the specified material. Which material was delivered?
• The commonly used angle between leather or asbestos friction lining surface and axis of cone clutch for a cone clutch is
• If both sprockets of a chain drive are replaced with sprockets having twice as many teeth while maintaining the same pitch and speed ratio, the chain velocity will
• When two bevel gears having equal teeth and equal pitch angle are used to transmit power between shafts that intersect at right angle, they are called
• Which clutch transmits power through positive engagement of interlocking members rather than relying on friction?
• A mechanic receives a bearing designated 6312. Which feature is identified by the digit '3' in the bearing designation?
• For sunk key, where is the keyway located?
• A four-bar chain consists of four rigid links connected by joints that are all turning pairs.
• Which of the following couplings is specifically intended to permit axial assembly without requiring either shaft to move longitudinally?
• Pitch circle diameter of an involute gear is dependent on which parameter?
• In damped free vibration, what happens to the amplitude over time?
• A tapered key which fits in a key-way in the hub and is flat on the shaft is known as?
• Which one of the following is a positive clutch?
• In a kinematic chain, a quaternary joint is equivalent to how many binary joints?
• Which physical phenomenon allows both friction clutches and friction brakes to transmit or absorb torque?
• Which screw thread is stronger than other threads?
• In screw thread terminology, what is meant by the pitch of a thread?
• Which type of loading is most associated with fatigue failure due to cycles?
• The clearance between the tooth profiles of a gear tooth.
• For hydrodynamic lubrication
• After thousands of operating cycles, torque calculations for a plate clutch are normally based on the uniform wear assumption because:
• In a cold riveting joint, which stress is most often the controlling factor for joint strength?
• In an oil-lubricated journal bearing, coefficient of friction between the journal and the bearing
• Which mineral is number 5 on the Mohs scale of hardness?
• When evaluating torque capacity of friction clutches that have been in service for an extended period, which design assumption is typically used?
• Constantan is composed primarily of copper and nickel.
• Which coupling should be selected when two intersecting shafts must transmit rotary motion while the angle between them varies during operation?
• When a column is subjected to an eccentric load, the induced stress in the column is due to which components?
• In gear hobbing, which motion is synchronized with the rotation of the hob to generate the correct tooth profile?
• 18/8 stainless steel contains which combination?
• In the Lewis equation, a gear tooth is considered as which type of beam?
• Fatigue failure most commonly results from:
• For machinery shafts, the permissible deflection is approximately what value?
• The path of contact in involute gears is which of the following?
• PV rating is a design criterion for sleeve bearings; what two factors does PV represent?
• Which form of copper is recovered by heating highly crushed ore?
• Which of the following is a common drilling machine for large workpieces that require stable mounting during drilling?
• Which engineering material is most capable of sustaining large plastic deformation before fracture?
• Which type of key is Kennedy key another name for?
• A flange coupling is designed assuming that the key, bolts, and shaft all have equal factors of safety. If the bolts are upgraded to a material with significantly higher shear strength while all other dimensions remain unchanged, which component becomes the critical element?
• The overload condition that occurs near large concentrated loads is called which phenomenon?
• In arc welding, the temperature of the arc is:
• In a four-bar chain, how many turning pairs are present?
• Which combination of methods provides the most accurate estimate of fundamental natural frequency for a shaft with multiple loads?
• Which of the following is a unique form of cast iron with worm-shaped graphite particles?
• When a specimen of low-carbon steel is loaded past its elastic range, what behavior is expected after the load is removed?
• Non-metallic gears have which combination of noise and load carrying capacity?
• ________ is also known as tube mills and are commonly used for wet grinding.
• Which statement best describes a riveted joint?
• Why are plasticizers added to plastics?
• From design point of view, spherical pressure vessels are preferred over cylindrical pressure vessels because
• Which one of the following causes whirling of shafts?
• Two shafts, solid and hollow, same material and weight having same length subjected to equal torsional force. What is the torsional stiffness of hollow shaft?
• In the buckling design of a screw jack, end conditions are typically assumed as which of the following?
• Which mechanism produces intermittent rotary motion from continuous rotary motion?
• Before modern non-asbestos materials became common, asbestos was widely selected for brake linings primarily because it possessed:
• If the rim speed doubles, the centrifugal tensile stress increases by what factor?
• The thickness of a gear tooth is measured
• If a bushing gear has no backlash, which of the following is a likely consequence?
• The curves that satisfy the fundamental law of gearing are:
• Which of the following is NOT considered a governing failure mode in establishing the horsepower rating of a standard roller chain?
• After an overloading that exceeds the elastic limit and subsequent unloading, the steel specimen behaves as:
• If both sprockets have twice as many teeth while maintaining the same pitch and speed ratio, the chain velocity will
• Compared with spur gears, helical gears tend to run:
• For a cone clutch, what is the commonly used angle between the friction lining and the axis?
• Which welding process uses a non-consumable tungsten electrode with inert gas shielding?
• Which ASTM code designates Chrome Silicon?
• Backlash in spur gears is the difference between which two features measured on the pitch circle?
• What's no. 5 in Mohs Hardness Scale?
• Which AISI tool steel is hardened in oil and has a low tendency to shrink or warp during heat treatment?
• In a beam of rectangular cross-section, how does the maximum shear stress compare to the average shear stress?
• In an involute gear, the normal to the involute is tangent to which circle?
• Spur gears used in machine tool gearboxes must have a contact ratio greater than 1.4.
• Degrees of polymerization for commercial plastics are usually less than:
• Which motion conversion is used by a lawn-sprinkler which is a four-bar mechanism?
• Which heat-treatment medium is typically used for AISI O-series tool steels?
• Which type of pliers is designed for cutting wires and holding flat round stock?
• The design calculations for members subject to fluctuating loads with the same factor of safety yield the most conservative estimates when using
• A thin plate with a circular hole is heated uniformly. If the coefficient of linear expansion governs the material, the hole area will:
• What is the axially located rectangular groove in a hub and shaft called?
• For transmitting power, a simple gear train consisting of 11 gears is used. Then the driver and driven shafts will be rotating in
• In GTAW, shielding gas is typically argon or helium.
• An axle is a machine part that is subjected to
• Which key relies primarily on friction rather than shear to transmit torque?
• Spring driven watches and clocks utilize
• In ductile materials notch or stress raiser is less harmful because
• Which coupling is best for easy dismantling when shafts are perfectly aligned?
• In a multiple V-belt drive under identical loading, if one belt fails first, what is the most probable cause?
• If both the maximum and minimum stresses remain tensile throughout a loading cycle but are of different magnitudes, the stress condition is known as:
• Modern flywheel energy storage systems frequently operate in a vacuum chamber primarily to
• The maximum strain energy that can be stored in a body is known as
• Clutch and coupling perform the same action.
• One of the three basic filing methods performed by grasping the file at the end and drawing across the workpiece is called what?
• Which nickel alloy designation corresponds to an age-hardenable wrought nickel alloy described in the material?
• Which of the following types of gear is free from interference?
• A surface texture symbol is modified by adding a small circle to the basic symbol. What does this indicate?
• Under normal service conditions, a screw fastener is designed to carry which type of loading?
• Flux is used in soldering to:
• Which key is generally preferred when ease of manufacturing is the primary consideration for a rigid shaft-hub connection?
• Which phenomenon causes slight cyclic variation in the speed of the driven sprocket of a roller chain transmission?
• Which key relies primarily on friction rather than shear to transmit torque?
• Which hardness test uses indentation depth to determine a hardness value, often yielding a single numeric scale?
• A tool bit for cutting an American National thread should be ground with an angle of:
• A cast-iron flywheel has reached its maximum allowable rim speed. If the rotational speed is increased further without changing its diameter, which failure is MOST likely to occur first?
• Which shape of steel key is usually strongest in shear and crushing?
• Which property can be calculated indirectly using the density and speed of sound in a material?
• The gear tooth Vernier is used to measure which of the following?
• In a simple gear train with an odd number of idler gears, the driven gear direction is
• In aluminum-deoxidized steels, the coarsening temperature is reached well above the critical temperature. Which term represents this temperature?
• Which gear is used to transmit motion with high smoothness and reduced vibration?
• The base helix angle is the angle the tooth makes with the gear axis at the base cylinder. This term is called?
• In engineering drawings, which line is used to indicate the center of symmetry and proper alignment for features?
• Which alloy is best known for resistance to sulfuric acid in concentrated solutions at elevated temperatures?
• The whole depth for a pair of gears is given by
• Which alloy is known for low creep rate, is age-hardenable, non-magnetic, oxidation resistant, and maintains high strength at elevated temperatures?
• Which sunk key made the form of a segment of a circular disc of uniform thickness, known as?
• In a beam of circular cross-section, the maximum shear stress relative to the average is how much higher?
• Which statement best describes the electrical and thermal conductivity of plastics?
• Tubular gears are the gears used in which device to reverse rotation?
• Which gear type is described as interference-free?
• What is the primary effect of stress concentration in a machine member?
• What is the PRIMARY purpose of lockout/tagout before servicing a machine?
• A coupling used for absorbing some shock and vibration that may appear on one shaft and of preventing the occurrence of reversed stresses caused by the shaft deflecting at the coupling preventing at the coupling.
• The wires in a wire rope are subjected to which stresses?
• Shoe is constrained to move towards the drum to compensate for the moment acting.
• The gear box in automobiles is placed between which components?
• A packaging conveyor originally driven by V-belts will now operate in an environment continuously exposed to oil contamination. Which power transmission system is preferred?
• In cold-riveted joints, the allowable joint strength is most often governed by which stress?
• In welding, weld spelter means:
• Compared with threaded fasteners, what is the primary advantage of a riveted joint?
• Surface endurance limit of gear material is dependent on its Brinell hardness number.
• Which key is commonly used on machine tool spindles because it permits axial movement of the hub without interrupting power transmission?
• Which form of fiber is composed of a number of parallel strands side by side, forming a flat ribbon?
• To promote uniform wear on meshing gear teeth, a design sometimes adds a feature known as hunting tooth addition. This practice is called?
• Which type of pliers is used for cutting wires and holding flat round stock?
• In a double-riveted lap joint under eccentric loading, outer rivets are generally more highly stressed because they
• The working temperature range for soldering process is:
• Static force on a gear tooth is due to which of the following?
• For motors with low starting torque, which clutch type should be used?
• Which machine tool uses a single-point cutting tool in a reciprocating motion to produce flat surfaces?
• Which statement about involute gears is false?
• Why are plain washers commonly installed beneath the head of a bolt or nut?
• Which drilling machine is specifically intended for machining large, heavy workpieces that cannot be conveniently repositioned during drilling?
• Which group of wires experiences maximum stress when a wire rope passes around a drum?
• The property where mechanical properties are the same in a particular direction at every point is known as
• Which device is used for transmitting energy in CNC machine tools?
• Which statement correctly describes 18/8 stainless steel composition?
• To keep maximum shear stress the same when shaft speed is doubled while transmitting the same power, the new diameter should be
• In first-angle projection, the top view is placed
• These clutches produce positive coupling between the two shafts, regardless of direction of rotation.
• Which of the following is the most effective design change to reduce fatigue failure due to stress concentration?
• The designation Ø40 H7/g6 indicates the relationship between which two parts?
• Concentric springs are used to achieve greater load carrying capacity with given space, provide fail-safe operation, and eliminate surge.
• Which design modification reduces the stress concentration factor?
• A maintenance engineer identifies a spring wire marked ASTM A232. Which material is being inspected?
• Which key is commonly used on machine tool spindles because it permits axial movement of the hub without interrupting power transmission?
• Which coupling uses rubber bushes to allow angular and axial displacement?
• In designing a shaft, hub and key for a system, weakest member taken is
• On the motors with low starting torque, the type of the clutch to be used is
• Which factor primarily determines the suitability of a plain washer under a bolt head?
• Stress concentration in a machine component of ductile materials not so harmful as it is in brittle material because
• The lead screw of a precision lathe typically uses a thread form that provides good efficiency while handling axial loads. Which form is this?
• Which statement about pitch circle diameter of an involute gear is true?
• Constantan is used in thermocouples due to its high electrical resistance.
• Which machining operation is used to create a flat seating surface around a hole to support fasteners?
• Which designation corresponds to Music Wire?
• In hydrodynamic lubrication between a journal and bearing, which condition is essential for film formation?
• In most of internal combustion engines, crankshaft bearings is
• In automobiles, the gear box is placed between which two components?
• Which method is based on energy conservation to estimate fundamental frequency?
• Effective stress in wire ropes during normal working is equal to the stress due to
• Spelter is another name for which of the following?
• Which of the following consists of a number of parallel strands of fiber, the strands are side by side (not interwoven or twisted together), forming a flat ribbon?
• Which statement correctly distinguishes clutch from coupling?
• The primary purpose of lockout/tagout before servicing equipment is to prevent accidental energization.
• For shafts, the shear due to bending is a maximum at the neutral plane where the normal stress is:
• A steel shaft rotates freely inside a bronze bushing with adequate lubrication clearance. Which class of fit is most appropriate?
• A machinist receives a drawing specifying Ø40 H7/g6. This designation primarily defines the
• Which of the following couplings can accommodate both angular and axial shaft displacement through the deformation of rubber bushes?
• What is a unique form of cast iron with worm shaped graphite particles?
• Which statement about arc temperatures matches the provided data?
• Which clutch type transmits power through positive engagement of interlocking members rather than relying on friction?
• Wahl factor must be considered to account for
• Which mineral corresponds to a Mohs hardness of about 2?
• In order to prevent the brake arm from grabbing, the moment of friction force about the brake arm pivot should be
• Which key is generally NOT recommended for transmitting heavy torque because no keyway is cut into the shaft?
• Straddle milling is an operation that machines which of the following?
• In belt drives, slip refers to
• Which wires experience maximum stress when a wire rope passes around a sheave or drum?
• Saint-Venant's Theory is the name given to which theory?
• Rayleigh's method of computing the fundamental natural frequency is based on
• A newly installed clutch slips only under heavy acceleration, although the release mechanism is properly adjusted. Which condition should be investigated first?
• A key capable of tilting in a recess milled out in a shaft is known as?
• Which of the following is recovered by the simple process of heating highly crushed ore?
• In a thick cylinder pressurized from inside, the hoop stress is maximum at
• The accurate method of finding the natural frequency of transverse vibrations of a system of several loads attached to some shaft is
• In buckling load for a given material depends on
• In a single slider four-bar linkage when the slider is fixed, it forms a mechanism of
• When the helical compression spring is subjected to axial compressive force, the type of stress induced in the spring wire is
• Reverted gear train is the gear train in which the first and last gear are on the same axis. Which option correctly describes this?
• An offset in radial cam translating follower mechanism serves to decrease pressure angle during ascent. Which option expresses this correctly?
• Which nut type is designed to be hand-tightened due to its knurled exterior?
• Lowering the pressure angle on gears affects tooth strength in which way?
• The loading pattern that starts at zero, rises to a maximum, then returns to zero is best described as
• The capacity of a material to absorb energy during elastic deformation and recover that energy upon unloading is called what?
• What will be the effect in bushing gears without backlash?
• Which set of accelerations is involved in the motion of the piston inside the cylinder of a uniformly rotating cylinder mechanism?
• To obviate axial thrust, which gear arrangement is used?
• Effective stress in wire ropes during normal working is equal to the stress due to
• In zerol gears, the axes of the shafts are described as which of the following?
• In column stability analysis, which factor has the most significant influence on the shape assumed by a column when it buckles under compressive loading?
• What does a double-start thread imply about the lead compared with the pitch?
• For the same transmitted torque and bolt diameter, increasing the bolt pitch-circle diameter of a flange coupling will:
• Which range is a typical speed for fabric belts?
• For precision compression springs, which ASTM designation should be specified on the purchase order?
• The normal to the involute is tangent to which circle?
• Before starting the brazing process, cleaning of parts is necessary to avoid which of the following?
• When a cutting fluid leaks near a lathe, what should be done first?
• Which screw thread is used for transmitting force in one direction?
• Which ASTM code designates Chrome Vanadium?
• The sum of addendum and dedendum equals the whole depth.
• How are gears for watches generally manufactured?
• Reducing the pressure angle on gears results in which of the following?
• Wire rope is typically used in applications with which combination of speed and tension?
• Which method is widely recognized for reducing alternating stress in bolted tension connections?
• Which type of vibration is associated with a gradual reduction in amplitude due to frictional or resistive forces?
• In a gear train, the train value is the reciprocal of the speed ratio.
• During the inspection of a roller chain, which dimension is commonly checked to determine whether excessive wear has occurred?
• In zerol gears, the axes of shafts are
• In metalworking, which workshop is dedicated to fabricating mechanical units by cutting and assembling metal parts?
• Which element is an austenitic stabilizer?
• For a planar four-bar linkage, the sum of the shortest and longest lengths cannot be greater than the sum of the remaining two link lengths if there is to be a continuous relative rotation between two members." How do you call the preceding statement?
• Which coupling provides elasticity to absorb shock and accommodate shaft deflection?
• What is the mobility of a statically indeterminate structure?
• Which coupling permits axial assembly without moving either shaft longitudinally?
• Which of the following is an example of accelerated strain aging in steel?
• Gears are considered to be medium velocity type if their peripheral velocity lies in which range?
• The tensile stress produced in the rim of a flywheel due solely to centrifugal force is directly proportional to which quantity?
• In flange coupling design, which element becomes critical if bolts are upgraded to significantly higher strength?
• What does CGI stand for in cast iron materials?
• Mechanical impact devices that accept material smaller than approximately 4 inches.
• At the instant a vibrating body passes through its equilibrium position, which statement about energy is correct?
• The section of a beam that is most critical for design purposes and lies near the location where the bending moment attains its greatest value is referred to as the
• An imaginary circle passing through the points at which the teeth of the meshing gears contact each other.
• In the detailed design of rim thickness and depth of bead, the assumed circular pitch (PC) value is which of the following?
• Which of the following is an effective method of reducing the alternating stress in bolted tension connections?
• Which statement best explains the uniform wear assumption in plate clutch torque calculations?
• An engineer selects ASTM A401 for manufacturing a heavy-duty valve spring. What spring material does this ASTM code represent?
• For an element subjected to pure shear stress, the normal stresses on planes oriented at 45 degrees to the original shear planes are:
• Which material does ASTM A229 correspond to?
• If some links are connected such that motion between them can take place in more than one direction, this motion is called
• A feather key is usually
• Which component is used to transmit energy in CNC machine tools, providing precise linear motion?
• It is a device that opposes motion and dissipates energy. An example of which is automobile shock absorber.
• If the controlling force line for a spring-controlled governor intersects the y-axis at the origin, the governor is said to be
• Holding power of a sunk key is due to resistance, which it offers in
• What is the direction of the Coriolis component of acceleration in a slotted lever-crank mechanism?
• Kevlar epoxy composite is widely used in which sector?
• The term 'proof resilience' refers to the maximum strain energy that can be stored in a body before yielding.
• In a solid circular shaft under torsion, doubling the diameter while keeping torque constant will cause the maximum shear stress to
• Tube mills are also known as agitator ball mills and are commonly used for wet grinding. Which mill type fits this description?
• Which screw thread is adaptable to split type nut?
• In belt drives, "slip" refers to
• Electrical conductor grade aluminum consists of approximately what percent of aluminum?
• Which coupling is most suitable for transmitting power between two perfectly aligned shafts while requiring easy dismantling for maintenance?
• Which machine tool produces flat surfaces by means of the reciprocating motion of a single-point cutting tool?
• Most of the non-recycled aluminum produced today is produced electrochemically. What do you call this process?
• In sulfuric acid, which alloy is suitable for handling acid in concentrations up to 50% and at boiling point?
• Which follower motion type will produce the least jerk to the system?
• What is the primary purpose of performing a ring test on a vitrified grinding wheel before installation?
• Which mechanism is an inversion of the double slider-crank chain?
• In a four-bar mechanism, the center of gravity of the coupler link experiences what accelerations during motion?
• Which machining operation is primarily intended to improve the dimensional accuracy and surface finish of an existing drilled hole?
• Which hand tool is commonly used for cutting or twisting wire and chipping small parts, and is not used for tightening or loosening bolts and nuts?
• Which statement about screw thread terms is correct for a single-start thread?
• Which value is the maximum typical degree of polymerization for commercial plastics?
• A tapered key which fits in a key-way in the hub and is flat on the shaft, is known as?
• What factor is most important to prevent loosening of a fastener under vibration?
• Forging possesses the following disadvantage:
• Which key is formed as a circular disc segment of uniform thickness?
• Which property primarily determines the energy storage capacity of a flywheel under varying load?
• What is the recommended speed for fabric belts?
• Which factor is NOT typically considered when determining the horsepower rating for a standard roller chain?
• Automobile steering gear is an example of
• The addendum circle passes through the tips of the gear teeth.
• Which mineral corresponds to Mohs hardness No. 5?
• In steels that have been deoxidized with aluminum, no grain growth occurs until the ________ is reached, which is well above the critical temperature.
• A workshop where metal parts are cut to size and assembled into machines is called what?
• Beach marks on a fracture surface are characteristic of which type of failure?
• Which type of gear will be used to have minimum axial thrust?
• Nickel acts as an austenitic stabilizer, stabilizing which phase?
• Which gear type is typically used to reduce noise in transmissions?
• Which brake arrangement is described by a caliper that squeezes a rotor from both sides?
• A shaft revolving in a bearing is an example of which type of kinematic pair?
• Power screws used for transmitting power should have which characteristic?