Question 1

Nominal top width of a B type V-belt is

Accepted Answer

A)  13 mm
B)  22 mm
C)  32 mm
D)  17 mm
E)  31 mm D

Question 2

In the case of an automobile power is transmitted from the gear box to the differential through

Accepted Answer

A)  Bevel gears
B)  Hooke's joint
C)  Oldham's coupling
D)  None of the above
E)  None of the above B

Question 3

The Ackermann steering gear consists of a four bar mechanism with

Accepted Answer

A)  Only one pair turning and three paris sliding
B)  All four pairs sliding
C)  Only two pairs turning and low pairs sliding
D)  Only three pairs turning and one pair sliding
E)  All four pairs turning E

Question 4

In case of flat belt drive the length of belt in case of

Accepted Answer

A)  Open belt depends on sum of the diameters of pulleys
B)  Open belts depends on difference of the diameters of pulleys
C)  Cross belts depends on the sum of the diameters of pulleys
D)  Cross belts depends on the difference of the diameters of pulleys
E)  None of the above

Question 5

In case of spur gears the top land is

Accepted Answer

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

Question 6

A Peaucellier mechanism has

Accepted Answer

A)  Ten links
B)  Eight links
C)  Four links
D)  Twelve links
E)  Six links

Question 7

The purpose of providing multiple collars on a flat collar pivot bearing is to

Accepted Answer

A)  Increase frictional resistance
B)  To establish self-sustaining bearing condition
C)  Distribute the frictional load because of limiting friction
D)  Distribute the axial load because of limiting bearing pressure on a collar
E)  None of the above

Question 8

The belt drive can transmit maximum power when maximum total tension in belt equals

Accepted Answer

A)  Centrifugal tension
B)  Twise the centrifugal tension
C)  Thrice the centrifugal tension
D)  Four times the centrifugal tension
E)  None of the above

Question 9

Two parallel shafts, the distance between whose axies is small and variable, may be connected by

Accepted Answer

A)  Knuckle joint
B)  Clutch arrangement
C)  Gear drive
D)  Oldham's coupling
E)  Universal joint

Question 10

The linear velocity of a point on a link relative to any other point on the link will be

Accepted Answer

A)  Along the line joining the two points
B)  Perpendicular to the line joining the two points
C)  Same as that of the end points of link
D)  Perpendicular to the lower end of the link
E)  None of the above

Question 11

The number of nodes in shaft carrying only tow rotor at the ends will be

Accepted Answer

A)  An odd number
B)  One
C)  An even number
D)  Zero
E)  Two

Question 12

Tangential acceleration direction is

Accepted Answer

A)  Along the angular velocity
B)  Perpendicular to the angular velocity
C)  Opposite to the angular velocity
D)  Any of (
A)   and (
B)  
E)  Any of (
A)   and (
C)

Question 13

A shaft revolving in a bearing forms a

Accepted Answer

A)  Turning pair
B)  Lower pair
C)  Turning pair
D)  Higher pair
E)  Clindrical pair

Question 14

Which of the following gear is not used on non-parallel, non-intersecting shafts?

Accepted Answer

A)  Bevel
B)  Worm
C)  Helical
D)  Hypoid
E)  All of the above

Question 15

The curve traced by the end of a thread as it is unwound from a stationary cylinder is known as

Accepted Answer

A)  Involute
B)  Circle
C)  Epicycloid
D)  Cycloid
E)  Straight line

Question 16

Slip in belt drive is

Accepted Answer

A)  Loss of power
B)  Difference between the velocities of two pulleys
C)  Difference between the angular velocities of two pulleys
D)  Difference between the linear speed of the rim of pulley and the belt on it
E)  None of the above

Question 17

The no of links in Hart mechanism is

Accepted Answer

A)  8
B)  6
C)  5
D)  4
E)  All of the above

Question 18

Kinematics of machines deals with

Accepted Answer

A)  Apparatus for applying mechanical power
B)  Number of inter-related parts
C)  The forces acting on the parts of the machine
D)  The relative motion between the parts, neglecting the consideration of the force
E)  None of the above

Question 19

For two meshing gears, their

Accepted Answer

A)  Clearance must be same
B)  No. of teeth must be same
C)  Dedendum must be same
D)  Addendum must be same
E)  Module must be same

Question 20

In case of locomotives the percentage of primary forces balanced is generally

Accepted Answer

A)  33 to 40 percent
B)  40 to 50 percent
C)  50 to 60 percent
D)  60 to 70 percent
E)  None of the above

Exam 9: Mechanical Engineering Gears, Mechanisms, and Drives