67.

68.

69.

70.

71.

099/23

Match the List — | with List — Il and select the correct answer using the codes given
below in the lists :

List -1 List - Il

P. Single-plate clutch 1. Scooters
Q. Multi-plate clutch 2. Rolling mills
R. Centrifugal clutch 3. Trucks
S. Jaw clutch 4. Moped
Codes :

P Q RS
A)1 3 4 2
B)1 3 2 4
c)3 1 4 2
D3 1 2 4

Which one of the following is the criterion in the design of hydrodynamic bearings ?
A) Rating life B) Rotation factor
C) Sommerfeld number D) Specific dynamic capacity

The value of bearing characteristic number corresponding to minimum coefficient of
friction in hydrodynamic bearings is called

A) Sommerfeld number

B) Bearing modulus

C) Friction variable

D) Minimum film thickness and radial clearance ratio

In case of thin cylindrical shell, the volumetric strain is given by
4) ६, = (०५/2६) (2.5 - 2/7) 8) ६, = (०५/2६) (2.5 - 2/7)
0) ६५ = (०५/41) (2.5 - 2/7) 0) ६, = (0५/2६) (2.5 - 2/1)

Which of the following statements are true in the case of Gray Cast lron ?
i. It has high compressive strength.

ii. It has self-damping property.

iii. It forms continuous chips while machining.

A) Only ii 8) Only i and ii

C) i, ii and iii are correct D) Only i and iii

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