Question 1

Velocity of sliding between two mating gear surfaces can be defined as

Accepted Answer

A) Sum of their angular velocities x distance between pitch point and point of contact. 
B) Sum of their angular velocities x distance between their centres of rotation. 
C) Sum of their angular velocities x difference between their pitch circle diameters 
D) None of these 
E) None of the above 
A) Sum of their angular velocities x distance between pitch point and point of contact. 
B) Sum of their angular velocities x distance between their centres of rotation. 
C) Sum of their angular velocities x difference between their pitch circle diameters 
D) None of these 
E) None of the above A

Question 2

Klien's construction gives a graphical construction for

Accepted Answer

A) Velocity polygon 
B) Slider crank mechanism 
C) Angular accelerations 
D) Acceleration polygon 
E) Four bar chain mechanism 
A) Velocity polygon 
B) Slider crank mechanism 
C) Angular accelerations 
D) Acceleration polygon 
E) Four bar chain mechanism D

Question 3

Which of the following is a dead weight type governor?

Accepted Answer

A) Porter governor 
B) Hartnell governor 
C) Watt governor 
D) All of the above 
E) None of the above 
A) Porter governor 
B) Hartnell governor 
C) Watt governor 
D) All of the above 
E) None of the above A

Question 4

Motor cycle shock sbsorbers are generally designed for

Accepted Answer

A) Resonant damping 
B) Light damping 
C) Large damping 
D) Critical damping 
E) Partial damping 
A) Resonant damping 
B) Light damping 
C) Large damping 
D) Critical damping 
E) Partial damping

Question 5

An axial flow fan balanced at one speed often exhibits substantial vibrational effects when operated at other speeds, mainly due to

Accepted Answer

A) Unbalanced parts of fan 
B) Aerodynamic unbalance 
C) Primary critical speed effect 
D) Secondary critical speed effect 
E) Vibration in air 
A) Unbalanced parts of fan 
B) Aerodynamic unbalance 
C) Primary critical speed effect 
D) Secondary critical speed effect 
E) Vibration in air

Question 6

Identify incorrect statement regarding the flywheel, if any

Accepted Answer

A) It is provided to minimise vibration of engine 
B) It takes care of output fluctuations and controls input accordingly 
C) It is provided to control engine speed 
D) All above 
E) In help in starting engine 
A) It is provided to minimise vibration of engine 
B) It takes care of output fluctuations and controls input accordingly 
C) It is provided to control engine speed 
D) All above 
E) In help in starting engine

Question 7

In case of gears, the interference takes place

Accepted Answer

A) Whenever the forms of the mating teeth are such that contact between them can occur at some place other than along the correct path of contact 
B) When gears do not move smoothly in absence of lubrication 
C) When the pitch of the gears is not same 
D) When the gear teeth are under cut 
E) None of the above 
A) Whenever the forms of the mating teeth are such that contact between them can occur at some place other than along the correct path of contact 
B) When gears do not move smoothly in absence of lubrication 
C) When the pitch of the gears is not same 
D) When the gear teeth are under cut 
E) None of the above

Question 8

A swinging field type dynamometer is

Accepted Answer

A) Torsion dynamometer 
B) Vortex type dynamometer 
C) Friction dynamometer 
D) Electrical dynamometer 
E) Transmission type of dynamometer 
A) Torsion dynamometer 
B) Vortex type dynamometer 
C) Friction dynamometer 
D) Electrical dynamometer 
E) Transmission type of dynamometer

Question 9

Which type of governor is preferred for gramophones?

Accepted Answer

A) Harting 
B) Porter 
C) Hartnell 
D) Pickering 
E) Watt 
A) Harting 
B) Porter 
C) Hartnell 
D) Pickering 
E) Watt

Question 10

The critical speed of a shaft is affected by

Accepted Answer

A) Diameter of the disc 
B) Eccentricity 
C) Span of shaft 
D) (
A)  and (
B)  above 
E) (
A) , (
B)  and (
C)  above 
A) Diameter of the disc 
B) Eccentricity 
C) Span of shaft 
D) (
A)  and (
B)  above 
E) (
A) , (
B)  and (
C)  above

Question 11

A kinematic chain requires minimum of

Accepted Answer

A) 3 links and 3 turning pairs 
B) 4 links and 4 turning pairs 
C) 3 links and 4 turning pairs 
D) 2 links and 3 turning pairs 
E) 4 links and 5 turning pairs 
A) 3 links and 3 turning pairs 
B) 4 links and 4 turning pairs 
C) 3 links and 4 turning pairs 
D) 2 links and 3 turning pairs 
E) 4 links and 5 turning pairs

Question 12

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 inelastic the velocity of of two masses after impact will be

Accepted Answer

A) 8.33 m/s 
B) 4.17 m/s 
C) Zero 
D) 13.3 m/s 
E) 6.67 m/s 
A) 8.33 m/s 
B) 4.17 m/s 
C) Zero 
D) 13.3 m/s 
E) 6.67 m/s

Question 13

The number of natural frequencies for three rotor system will be

Accepted Answer

A) Six 
B) Three 
C) One 
D) Four 
E) Two 
A) Six 
B) Three 
C) One 
D) Four 
E) Two

Question 14

The gears are considered to be operating in medium velocity range if their peripheral velocity lies in the range

Accepted Answer

A) 25-50 m/sec 
B) 3-15 m/sec 
C) 15-25 m/sec 
D) 1-3 m/sec 
E) 50-75 m/sec 
A) 25-50 m/sec 
B) 3-15 m/sec 
C) 15-25 m/sec 
D) 1-3 m/sec 
E) 50-75 m/sec

Question 15

Which of the following is a spring controlled governor?

Accepted Answer

A) Harting governor 
B) Pickering governor 
C) Hartnell governor 
D) Wilson hartnell governor 
E) All of the above 
A) Harting governor 
B) Pickering governor 
C) Hartnell governor 
D) Wilson hartnell governor 
E) All of the above

Question 16

In a kinematic chain the minimum number of kinematic pairs required is

Accepted Answer

A) Five 
B) Three 
C) Four 
D) Two 
E) One 
A) Five 
B) Three 
C) Four 
D) Two 
E) One

Question 17

For a rational number for the pitch circle diameter and a rational number of teeth on the wheel, the circular pitch will work out to

Accepted Answer

A) An odd number 
B) An even number 
C) A rational number 
D) An irrational number 
E) None of the above 
A) An odd number 
B) An even number 
C) A rational number 
D) An irrational number 
E) None of the above

Question 18

The speed ratio in case of micro gears is

Accepted Answer

A) Between 1.1 and 5 
B) More than 10 
C) Less than 1 
D) Between 5 and 10 
E) 1 
A) Between 1.1 and 5 
B) More than 10 
C) Less than 1 
D) Between 5 and 10 
E) 1

Question 19

In order that a belt may not run off the pulley

Accepted Answer

A) It should be properly tightened 
B) The centre line of the belt as it approaches the pulley must lie in a plane perpendicular to the axis of that pulley 
C) The belt should be provided with frictional material 
D) The belt should be provided with a guide 
E) None of the above 
A) It should be properly tightened 
B) The centre line of the belt as it approaches the pulley must lie in a plane perpendicular to the axis of that pulley 
C) The belt should be provided with frictional material 
D) The belt should be provided with a guide 
E) None of the above

Question 20

The sum of the tensions when the belt is running on the pulley is

Accepted Answer

A) Less than the initial tension 
B) More than the initial tension 
C) More than twise the initial tension 
D) Half the initial tension 
E) None of the above 
A) Less than the initial tension 
B) More than the initial tension 
C) More than twise the initial tension 
D) Half the initial tension 
E) None of the above

Velocity of sliding between two mating gear surfaces can be defined as

Klien's construction gives a graphical construction for

Which of the following is a dead weight type governor?

Motor cycle shock sbsorbers are generally designed for

An axial flow fan balanced at one speed often exhibits substantial vibrational effects when operated at other speeds, mainly due to

Identify incorrect statement regarding the flywheel, if any

In case of gears, the interference takes place

A swinging field type dynamometer is

Which type of governor is preferred for gramophones?

The critical speed of a shaft is affected by

A kinematic chain requires minimum of

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 inelastic the velocity of of two masses after impact will be

The number of natural frequencies for three rotor system will be

The gears are considered to be operating in medium velocity range if their peripheral velocity lies in the range

Which of the following is a spring controlled governor?

In a kinematic chain the minimum number of kinematic pairs required is

For a rational number for the pitch circle diameter and a rational number of teeth on the wheel, the circular pitch will work out to

The speed ratio in case of micro gears is

In order that a belt may not run off the pulley

The sum of the tensions when the belt is running on the pulley is

Mechanical Engineering Concepts

Mechanical Engineering Shafts, Belts, Gears, and Governors

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

Mechanical Engineering: V-Belts, Gears, Chains

Mechanisms and Kinematics: Gears, Belts, and Linkages

Mechanical Engineering: Higher Pairs, Kinematic Chains, Vibrating Bodies

Mechanical Engineering: Cam Size, Transmission Losses, Kleins Construction

Mechanical Engineering Gears, Mechanisms, and Drives

Mechanical Engineering: Gears, Linkages

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Exam 4: Mechanical Engineering: Speed Ratios, Gears, Vibrations, Governors

Velocity of sliding between two mating gear surfaces can be defined as

Klien's construction gives a graphical construction for

Which of the following is a dead weight type governor?

Motor cycle shock sbsorbers are generally designed for

An axial flow fan balanced at one speed often exhibits substantial vibrational effects when operated at other speeds, mainly due to

Identify incorrect statement regarding the flywheel, if any

In case of gears, the interference takes place

A swinging field type dynamometer is

Which type of governor is preferred for gramophones?

The critical speed of a shaft is affected by

A kinematic chain requires minimum of

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 inelastic the velocity of of two masses after impact will be

The number of natural frequencies for three rotor system will be

The gears are considered to be operating in medium velocity range if their peripheral velocity lies in the range

Which of the following is a spring controlled governor?

In a kinematic chain the minimum number of kinematic pairs required is

For a rational number for the pitch circle diameter and a rational number of teeth on the wheel, the circular pitch will work out to

The speed ratio in case of micro gears is

In order that a belt may not run off the pulley

The sum of the tensions when the belt is running on the pulley is

Mechanical Engineering Concepts

Mechanical Engineering Shafts, Belts, Gears, and Governors

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

Mechanical Engineering: V-Belts, Gears, Chains

Mechanisms and Kinematics: Gears, Belts, and Linkages

Mechanical Engineering: Higher Pairs, Kinematic Chains, Vibrating Bodies

Mechanical Engineering: Cam Size, Transmission Losses, Kleins Construction

Mechanical Engineering Gears, Mechanisms, and Drives

Mechanical Engineering: Gears, Linkages

Filters