Question 1

Slip in turning belt is

Accepted Answer

A)  Always restricted to 1 percent
B)  Less than 5%
C)  Zero
D)  Depends on the belt material
E)  Maximum permissible C

Question 2

The mass moment of inertia is

Accepted Answer

A)  The resistance to angular acceleration
B)  The mass of every element of a body multiplied by its distance from the axis
C)  Any of the above
D)  None of the above
E)  Cross-head A

Question 3

In a cam and follower mechanism, for the uniform velocity of the followers the displacement curve will have

Accepted Answer

A)  No slope
B)  Constant slope
C)  Slope in positive direction only
D)  Slope in both positive and negative direction
E)  None of the above B

Question 4

Coriorli's component of acceleration exists whenever a point moves along a path that has

Accepted Answer

A)  Gravitational acceleration
B)  Rotational motion
C)  Linear displacement
D)  Tangential acceleration
E)  Centripetal acceleration

Question 5

Pitch of gears is expressed by

Accepted Answer

A)  Circular pitch
B)  Diametral pitch
C)  Module
D)  Any of the above
E)  None of the above

Question 6

Which of the following gears is free from axial thrust

Accepted Answer

A)  Worm gears
B)  Bevel grars
C)  Herringbone gears
D)  Helical gears
E)  Spiral gears

Question 7

Identify the incorrect statement if any

Accepted Answer

A)  In case of free vibrations the external force is applied at the ends only
B)  Damping is resistance to the oscillartion
C)  When the frequency of the external exciting force coincides with the natural frequency of the system, state of resonance is reached
D)  Forced vibrations are independent of natural frequency of vibration
E)  None of the above

Question 8

In case of spur gears the profile is

Accepted Answer

A)  Radius that connects the root circle to the profile of the tooth
B)  The curve forming face and flank
C)  The part of the tooth surface lying below the pitch surface
D)  The surface of the top of tooth
E)  The width of the gear tooth measured axially along the pitch surface

Question 9

In case of cross-helical worm the axes of two shafts are

Accepted Answer

A)  Non-intersecting
B)  Parallel
C)  Non-parallel-non intersecting
D)  Intersecting
E)  Non-parallel

Question 10

The number of forks provided in a Hooke's joint is

Accepted Answer

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

Question 11

A dadial follower is

Accepted Answer

A)  One that reciprocates in the guides
B)  One that oscillates
C)  One in which the follower translates along an axis passing through the cam centre of rotation
D)  One in which the axis of the following movement is displaced from the cam centre
E)  None of the above

Question 12

The effect of creep in case of cross-belt drive is

Accepted Answer

A)  To increase the power transmitted
B)  To increase the speed of driven pulley
C)  (
A)   and (
B)   above together
D)  To reduce the speed of the driven pulley and consequently reduce the power output
E)  None of the above

Question 13

In case of hypoid gears the mutual position of shafts will be

Accepted Answer

A)  Non-intersecting
B)  Parallel
C)  Non-parallel
D)  Non-parallel, non-intersecting
E)  Intersecting

Question 14

V-belts with E type cross-section are generally used in

Accepted Answer

A)  Automobiles
B)  Small engines
C)  When driver and driven units are far off
D)  Heavy duty machines
E)  None of the above

Question 15

A cylindrical type cam is one

Accepted Answer

A)  With circular type motion of follower
B)  With cylindrical shape of follower
C)  With disc type cam in which the position of the follower is determined by the radial distance from the cam axis.
D)  With cricumferential contour cut in the surface of the cylinder which rotates about its axis
E)  With cylindrical roller follower

Question 16

The pulley in a belt drive acts as

Accepted Answer

A)  Sliding pair
B)  Cylindrical pair
C)  Turning pair
D)  Rolling pair
E)  Spherical pair

Question 17

Ackermann steering gear consists of

Accepted Answer

A)  Turning pair
B)  Rolling and sliding pairs
C)  Sliding pairs
D)  Rolling pairs
E)  Sliding and rotary pairs

Question 18

A reverted gear train is one is which

Accepted Answer

A)  The direction of rotation of first and last gear is the same
B)  The firection of rotation of first and the last gear is opposite
C)  The first and last gear are on the same shaft
D)  The first and last gear are essentially on separate but parallel shafts
E)  None of the above

Question 19

Dynamic of machines deals with

Accepted Answer

A)  The relative motion between the parts, neglecting the consideration of forces
B)  The forces acting on the parts of the machine
C)  The apparatus for applying mechanical power
D)  The number of inter-related parts, each having a definite motion
E)  None of the above

Question 20

The spring constant k of a coil-spring is

Accepted Answer

A)  inversely proportional to the square of the number of coils in the spring
B)  Sperm
C)  directly proportional to the number of coils in the spring
D)  inversely proportional to the number of coils in the spring
E)  directly proportional to the square of the number of coils in the spring

Exam 1: Mechanical Engineering Concepts