Sparks Academy
SPARKS ACADEMY
Online Test Series
8190879379 Chennai

Mechanical - UNIT - 7 - Friction - MCQ

26)   

Which factor does not affect friction between two surfaces?

A.
B.
C.
D.
Answer: C
27)   

Frictional force always acts: 

A.
B.
C.
D.
Answer: B
28)   

One way to reduce rolling friction is:

A.
B.
C.
D.
Answer: C
29)   

Limiting friction is the: 

A.
B.
C.
D.
Answer: A
30)   

Friction can be increased by:

A.
B.
C.
D.
Answer: C
31)   

Which friction is highest among the following? 

A.
B.
C.
D.
Answer: B
32)   

The function of ball bearing is to:

A.
B.
C.
D.
Answer: B
33)   

The device used in vehicles to stop motion using friction is:

A.
B.
C.
D.
Answer: C
34)   

In which case is friction unwanted?

A.
B.
C.
D.
Answer: C
35)   

 Which of the following is used to increase friction intentionally?

A.
B.
C.
D.
Answer: C
36)   

Friction depends on:

A.
B.
C.
D.
Answer: C
37)   

Which of the following is true about kinetic friction? 

A.
B.
C.
D.
Answer: C
38)   

Friction is a type of:

A.
B.
C.
D.
Answer: A
39)   

Lubricants are used in machines to:

A.
B.
C.
D.
Answer: B
40)   

What is the cause of friction?

A.
B.
C.
D.
Answer: C
41)   

The unit of coefficient of friction is:

A.
B.
C.
D.
Answer: C
42)   

In machine tools, friction between moving parts is reduced by:           

A.
B.
C.
D.
Answer: C
43)   

Which of the following is NOT a friction-reducing method? 

A.
B.
C.
D.
Answer: D
44)   

Which is not an effect of friction?

A.
B.
C.
D.
Answer: C
45)   

The angle of friction is the angle between: 

A.
B.
C.
D.
Answer: A
46)   

Which type of lubricant is commonly used in lathe machines?

A.
B.
C.
D.
Answer: B
47)   

The main cause of heat generation in machines is:

A.
B.
C.
D.
Answer: B
48)   

Which law of friction states that friction is proportional to the normal reaction?

A.
B.
C.
D.
Answer: C
49)   

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

A.
B.
C.
D.
Answer: B
50)   

In belt drives, friction is used to:

A.
B.
C.
D.
Answer: C