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MCQ - TNPSC JTO

JTO - 540 - Trade - Workshop Calculation Science

UNIT - 7 - Friction

49)   

Which one of the following is a disadvantage of friction in machines?

A.
B.
C.
D.
50)   

In belt drives, friction is used to:

A.
B.
C.
D.
51)   

Friction between two dry surfaces without lubrication is called:

A.
B.
C.
D.
52)   

Friction between lubricated surfaces is called:

A.
B.
C.
D.
53)   

Which of the following is a merit of friction in workshop practice?

A.
B.
C.
D.
54)   

Which friction acts when a body starts moving?

A.
B.
C.
D.
55)   

Which component in vehicles uses friction for power transmission?

A.
B.
C.
D.
56)   

The coefficient of rolling friction is generally:

A.
B.
C.
D.
57)   

 A machine without proper lubrication may result in:

A.
B.
C.
D.
58)   

 Which of the following has lowest friction? 

A.
B.
C.
D.
59)   

Which law of friction states that friction is independent of area of contact? 

A.
B.
C.
D.
60)   

Which material provides high friction when dry?

A.
B.
C.
D.
61)   

The maximum value of static friction is called: 

A.
B.
C.
D.
62)   

Which one of the following reduces both wear and friction?

A.
B.
C.
D.
63)   

Frictional force always acts in a direction: 

A.
B.
C.
D.
64)   

A wedge is effective because of:

A.
B.
C.
D.