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MCQ - TNPSC JTO

JTO - 540 - Trade - Workshop Calculation Science

UNIT - 7 - Friction

81)   

Which of the following is not a method to reduce friction? 

A.
B.
C.
D.
82)   

Which of the following is the best lubricant in high-speed rotating machines?

A.
B.
C.
D.
83)   

What kind of friction occurs in hydraulic systems?

A.
B.
C.
D.
84)   

Which material is commonly added to oil to improve lubrication?

A.
B.
C.
D.
85)   

The function of a bearing in machines is to:

A.
B.
C.
D.
86)   

 What will happen if grease is not used in a bearing?

A.
B.
C.
D.
87)   

Friction in machines converts mechanical energy into:

A.
B.
C.
D.
88)   

Which of the following causes wear and tear in tools?

A.
B.
C.
D.
89)   

Which of the following is used in machines to reduce rolling friction?

A.
B.
C.
D.
90)   

Which of these helps to increase friction where needed in machines? 

A.
B.
C.
D.
91)   

In mechanical systems, friction is desirable when: 

A.
B.
C.
D.
92)   

What kind of friction is minimum among the types?

A.
B.
C.
D.
93)   

 In lathe machines, lubrication is provided mainly to: 

A.
B.
C.
D.
94)   

High friction in machines results in: 

A.
B.
C.
D.
95)   

Which law states that friction is proportional to normal force? 

A.
B.
C.
D.
96)   

 Frictional heat in cutting operations is controlled by:

A.
B.
C.
D.