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MCQ - TNPSC JTO

JTO - 540 - Trade - Workshop Calculation Science

UNIT - 7 - Friction

145)   

If the angle of friction is 45°, what is the coefficient of friction (μ)? 

A.
B.
C.
D.
146)   

Which condition is necessary for friction to act between two surfaces?

A.
B.
C.
D.
147)   

The instrument used to measure small frictional forces in labs: 

A.
B.
C.
D.
148)   

 Friction is directly proportional to: 

A.
B.
C.
D.
149)   

Which of the following is used to reduce friction in rotating shafts?

A.
B.
C.
D.
150)   

 In workshop tools, friction leads to: 

A.
B.
C.
D.
151)   

Which factor does not affect the coefficient of friction? 

A.
B.
C.
D.
152)   

Which method is commonly used to measure static friction? 

A.
B.
C.
D.
153)   

 In machinery, frictional losses reduce:

A.
B.
C.
D.
154)   

The angle of repose is equal to the: 

A.
B.
C.
D.
155)   

Ball bearings reduce friction by:

A.
B.
C.
D.
156)   

 In a brake system, friction converts mechanical energy into:

A.
B.
C.
D.
157)   

Which of these is not a way to increase friction?

A.
B.
C.
D.
158)   

What type of friction acts when a car moves on a road? 

A.
B.
C.
D.
159)   

 When the body just starts sliding, the friction is called:

A.
B.
C.
D.
160)   

The effect of excessive friction on machines is:

A.
B.
C.
D.