Question 1

Which of the following is a sliding pair?

Accepted Answer

A) Bolt and nut 
B) Ball and socket joint 
C) Belt and pulley 
D) Cross-head and guides 
E) None of the above 
A) Bolt and nut 
B) Ball and socket joint 
C) Belt and pulley 
D) Cross-head and guides 
E) None of the above D

Question 2

In a Hartnell governor if the stiffness of spring is increased the governor will

Accepted Answer

A) Become more sensitive 
B) Become less sensitive 
C) Remain unaffected as far sensitivity is concerned 
D) Start hunting (
E)  Become isochronous 
E) 21 cps 
A) Become more sensitive 
B) Become less sensitive 
C) Remain unaffected as far sensitivity is concerned 
D) Start hunting (
E)  Become isochronous 
E) 21 cps B

Question 3

The mechanism used to enlarge or reduce moments for reproducing drawings to different scales is known as

Accepted Answer

A) Durograph 
B) Graphometer 
C) Pantograph 
D) Clinograph 
E) Trisquare 
A) Durograph 
B) Graphometer 
C) Pantograph 
D) Clinograph 
E) Trisquare C

Question 4

The coefficient of friction between pulley and belt is reduced to half. If the initial ratio of tension in belt is 5, then the new value will be

Accepted Answer

A) 2 
B) 4 
C) 5 
D) 7.5 
E) None of the above 
A) 2 
B) 4 
C) 5 
D) 7.5 
E) None of the above

Question 5

A body having an initial velocity of 10 m/s moves 200 mm in 5 sec when a force of 20 kgf is applied to it. If the acceleration due to gravity is 9 m/s2 the weight of the body should be

Accepted Answer

A) 15 kg 
B) 18.35 kg 
C) 11 kg 
D) 18.65 kg 
E) 16.5 kg 
A) 15 kg 
B) 18.35 kg 
C) 11 kg 
D) 18.65 kg 
E) 16.5 kg

Question 6

A 0.5 kg weight attached to a light spring elongates it 0.981 mm. The natural frequency of the system would be approximately

Accepted Answer

A) 26 cps 
B) 21 cps 
C) 6 cps 
D) 16 cps 
E) 11 cps 
A) 26 cps 
B) 21 cps 
C) 6 cps 
D) 16 cps 
E) 11 cps

Question 7

Which of following gear system have minimum axial thrust?

Accepted Answer

A) Double helical gears 
B) Bevel gears 
C) Spur gears 
D) Helical gears 
E) Miter gears 
A) Double helical gears 
B) Bevel gears 
C) Spur gears 
D) Helical gears 
E) Miter gears

Question 8

Which of the following road offers maximum resistance to automobiles?

Accepted Answer

A) Loose sand 
B) Well rolled gravel 
C) Wood paving 
D) Macadam 
E) Sperm 
A) Loose sand 
B) Well rolled gravel 
C) Wood paving 
D) Macadam 
E) Sperm

Question 9

A governor is said to be isochronous when

Accepted Answer

A) The equilibrium ball radii is constant for a given speed 
B) For each speed within the working range the ball weights occupy a definite specific position 
C) There is only one radius of the governor weights for each equilibrium sped 
D) There is only one equibilbrium speed which is constant for all radii of rotation of the bells within the working range 
E) None of the above 
A) The equilibrium ball radii is constant for a given speed 
B) For each speed within the working range the ball weights occupy a definite specific position 
C) There is only one radius of the governor weights for each equilibrium sped 
D) There is only one equibilbrium speed which is constant for all radii of rotation of the bells within the working range 
E) None of the above

Question 10

Klein's construction is used to determine

Accepted Answer

A) Displacement of various parts 
B) Velocity of various parts 
C) Acceleration of various parts 
D) Angular acceleration of various parts 
E) None of the above 
A) Displacement of various parts 
B) Velocity of various parts 
C) Acceleration of various parts 
D) Angular acceleration of various parts 
E) None of the above

Question 11

A sphere of mass 100 kg moving at 10 m/s overtakes and collides with another sphere of mass 50 kg moving at 3 m/s in the same direction. If the impact is perfectly elastic, the velocity of two masses after impact will be

Accepted Answer

A) 6.67 m/s 
B) Zero 
C) 8.33 m/s 
D) 3.33 m/s 
E) 2 m/s 
A) 6.67 m/s 
B) Zero 
C) 8.33 m/s 
D) 3.33 m/s 
E) 2 m/s

Question 12

In vibration analysis 'Beat' frequency is

Accepted Answer

A) The frequency at which vibrations of a system are damped 
B) Said to occur when two vibrations of almost equal frequency are present 
C) The frequency when a system exceeds the vibrations frequency from the critical value 
D) The frequency below which vibrations do not cause appreciable damage to equipment 
E) One at which the vibrations of a system act exactly opposite to the other thereby causing damping 
A) The frequency at which vibrations of a system are damped 
B) Said to occur when two vibrations of almost equal frequency are present 
C) The frequency when a system exceeds the vibrations frequency from the critical value 
D) The frequency below which vibrations do not cause appreciable damage to equipment 
E) One at which the vibrations of a system act exactly opposite to the other thereby causing damping

Question 13

In a car transmission losses will be least in which gear?

Accepted Answer

A) Direct gear 
B) Third gear 
C) Second gear 
D) First gear 
E) Sperm 
A) Direct gear 
B) Third gear 
C) Second gear 
D) First gear 
E) Sperm

Question 14

The direction of Corioli's component of acceleration is

Accepted Answer

A) The direction of relative velocity vector for the two coincidental points rotated by 90° in the direction of the angular velocity of the rotation of the link 
B) The direction of relative velocity vector for the two coincidental points rotated by 180° in the direction of the angular velocity of the rotation of the link 
C) The direction of relative velocity vector for the two coincidental points in the direction directly opposite to that of angular velocity 
D) The direction at right angles to that of relative angular velocity vector 
E) None of the above 
A) The direction of relative velocity vector for the two coincidental points rotated by 90° in the direction of the angular velocity of the rotation of the link 
B) The direction of relative velocity vector for the two coincidental points rotated by 180° in the direction of the angular velocity of the rotation of the link 
C) The direction of relative velocity vector for the two coincidental points in the direction directly opposite to that of angular velocity 
D) The direction at right angles to that of relative angular velocity vector 
E) None of the above

Question 15

The cam angle is

Accepted Answer

A) The angle of rotation of the cam for a definite displacement of the follower 
B) Angle subtended by live portion of cam at the cam centre 
C) The angle subtended at the cam centre by the portion of cam during which the follower moves 
D) The angle subtended by the cam at the cam centre when the follower dwells 
E) None of the above 
A) The angle of rotation of the cam for a definite displacement of the follower 
B) Angle subtended by live portion of cam at the cam centre 
C) The angle subtended at the cam centre by the portion of cam during which the follower moves 
D) The angle subtended by the cam at the cam centre when the follower dwells 
E) None of the above

Question 16

The speed of gas turbine is usually

Accepted Answer

A) Same as natural frequency of vibrations 
B) Below the natural frequency of vibrations 
C) Well above the natural frequency of vibrations 
D) Not connected with natural frequency of vibrations 
E) None of the above 
A) Same as natural frequency of vibrations 
B) Below the natural frequency of vibrations 
C) Well above the natural frequency of vibrations 
D) Not connected with natural frequency of vibrations 
E) None of the above

Question 17

In case of Scotch Yoke Mechanism the Coriolis component is

Accepted Answer

A) Involved but generally neglected 
B) Not involved 
C) Involved if some other conditions are satisfied 
D) Sometimes involved 
E) Involved 
A) Involved but generally neglected 
B) Not involved 
C) Involved if some other conditions are satisfied 
D) Sometimes involved 
E) Involved

Question 18

In a system if the speed reduction of 60: 1 is desired the convenient way is to use

Accepted Answer

A) Helical gears 
B) Worm and worm wheel 
C) Differential system 
D) Bevel gears 
E) Simple gear train 
A) Helical gears 
B) Worm and worm wheel 
C) Differential system 
D) Bevel gears 
E) Simple gear train

Question 19

Cam size depends upon

Accepted Answer

A) Pitch cricle 
B) Cam operating speed 
C) Base circle 
D) Outer circle 
E) Prime circle 
A) Pitch cricle 
B) Cam operating speed 
C) Base circle 
D) Outer circle 
E) Prime circle

Question 20

In Iocomotives, swaying couple is caused due to

Accepted Answer

A) Unbalanced part of the secondary forces acting at a distance between the line of stroke of the cylinders 
B) Vertical unbalanced primary forces acting in the plane of the wheels 
C) Vertical unbalanced primary forces acting in the plane of the wheels 
D) Unbalanced parts of the primary forces acting at a distance between the line of stroke of the cylinders 
E) Horizontal unbalanced primary forces acting in the plane of the wheel 
A) Unbalanced part of the secondary forces acting at a distance between the line of stroke of the cylinders 
B) Vertical unbalanced primary forces acting in the plane of the wheels 
C) Vertical unbalanced primary forces acting in the plane of the wheels 
D) Unbalanced parts of the primary forces acting at a distance between the line of stroke of the cylinders 
E) Horizontal unbalanced primary forces acting in the plane of the wheel

Which of the following is a sliding pair?

In a Hartnell governor if the stiffness of spring is increased the governor will

The mechanism used to enlarge or reduce moments for reproducing drawings to different scales is known as

The coefficient of friction between pulley and belt is reduced to half. If the initial ratio of tension in belt is 5, then the new value will be

A body having an initial velocity of 10 m/s moves 200 mm in 5 sec when a force of 20 kgf is applied to it. If the acceleration due to gravity is 9 m/s2 the weight of the body should be

A 0.5 kg weight attached to a light spring elongates it 0.981 mm. The natural frequency of the system would be approximately

Which of following gear system have minimum axial thrust?

Which of the following road offers maximum resistance to automobiles?

A governor is said to be isochronous when

Klein's construction is used to determine

A sphere of mass 100 kg moving at 10 m/s overtakes and collides with another sphere of mass 50 kg moving at 3 m/s in the same direction. If the impact is perfectly elastic, the velocity of two masses after impact will be

In vibration analysis 'Beat' frequency is

In a car transmission losses will be least in which gear?

The direction of Corioli's component of acceleration is

The cam angle is

The speed of gas turbine is usually

In case of Scotch Yoke Mechanism the Coriolis component is

In a system if the speed reduction of 60: 1 is desired the convenient way is to use

Cam size depends upon

In Iocomotives, swaying couple is caused due to

Mechanical Engineering Concepts

Mechanical Engineering Shafts, Belts, Gears, and Governors

Mechanical Engineering: Balancing, Cam Profiles, Dynamometers, Pulleys, Gears

Mechanical Engineering: Speed Ratios, Gears, Vibrations, Governors

Mechanical Engineering: V-Belts, Gears, Chains

Mechanisms and Kinematics: Gears, Belts, and Linkages

Mechanical Engineering: Higher Pairs, Kinematic Chains, Vibrating Bodies

Mechanical Engineering Gears, Mechanisms, and Drives

Mechanical Engineering: Gears, Linkages

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Exam 8: Mechanical Engineering: Cam Size, Transmission Losses, Kleins Construction

Which of the following is a sliding pair?

In a Hartnell governor if the stiffness of spring is increased the governor will

The mechanism used to enlarge or reduce moments for reproducing drawings to different scales is known as

The coefficient of friction between pulley and belt is reduced to half. If the initial ratio of tension in belt is 5, then the new value will be

A body having an initial velocity of 10 m/s moves 200 mm in 5 sec when a force of 20 kgf is applied to it. If the acceleration due to gravity is 9 m/s2 the weight of the body should be

A 0.5 kg weight attached to a light spring elongates it 0.981 mm. The natural frequency of the system would be approximately

Which of following gear system have minimum axial thrust?

Which of the following road offers maximum resistance to automobiles?

A governor is said to be isochronous when

Klein's construction is used to determine

A sphere of mass 100 kg moving at 10 m/s overtakes and collides with another sphere of mass 50 kg moving at 3 m/s in the same direction. If the impact is perfectly elastic, the velocity of two masses after impact will be

In vibration analysis 'Beat' frequency is

In a car transmission losses will be least in which gear?

The direction of Corioli's component of acceleration is

The cam angle is

The speed of gas turbine is usually

In case of Scotch Yoke Mechanism the Coriolis component is

In a system if the speed reduction of 60: 1 is desired the convenient way is to use

Cam size depends upon

In Iocomotives, swaying couple is caused due to

Mechanical Engineering Concepts

Mechanical Engineering Shafts, Belts, Gears, and Governors

Mechanical Engineering: Balancing, Cam Profiles, Dynamometers, Pulleys, Gears

Mechanical Engineering: Speed Ratios, Gears, Vibrations, Governors

Mechanical Engineering: V-Belts, Gears, Chains

Mechanisms and Kinematics: Gears, Belts, and Linkages

Mechanical Engineering: Higher Pairs, Kinematic Chains, Vibrating Bodies

Mechanical Engineering Gears, Mechanisms, and Drives

Mechanical Engineering: Gears, Linkages

Filters