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Mechanical - 540 UNIT 3 Mass Weight Volume Density Speed - MCQ

51)   

The formula for kinetic energy is: 

A.
B.
C.
D.
Answer: C
52)   

Which one is a vector quantity?

A.
B.
C.
D.
Answer: C
53)   

1 Newton is equal to:

A.
B.
C.
D.
Answer: A
54)   

 A machine has 100% efficiency only when: 

A.
B.
C.
D.
Answer: A
55)   

The rate of change of velocity is:

A.
B.
C.
D.
Answer: B
56)   

Which of the following has both magnitude and direction?

A.
B.
C.
D.
Answer: C
57)   

The SI unit of force is: 

A.
B.
C.
D.
Answer: D
58)   

Which one is a derived quantity?

A.
B.
C.
D.
Answer: C
59)   

The energy due to position is: 

A.
B.
C.
D.
Answer: A
60)   

What is the work done when a 20 N force moves a body by 3 m? 

A.
B.
C.
D.
Answer: A
61)   

In which case will no energy be lost? 

A.
B.
C.
D.
Answer: B
62)   

What is the mass of a body that weighs 98 N? (g = 9.8 m/s²)

A.
B.
C.
D.
Answer: A
63)   

Velocity is zero when:

A.
B.
C.
D.
Answer: B
64)   

The work done in lifting a 5 kg object to a height of 2 m is: (g = 10 m/s²)

A.
B.
C.
D.
Answer: A
65)   

Distance is a: 

A.
B.
C.
D.
Answer: A
66)   

If a moving body stops, its kinetic energy becomes:

A.
B.
C.
D.
Answer: B
67)   

When an object is falling, its potential energy:

A.
B.
C.
D.
Answer: C
68)   

If a body is moving at constant speed, its acceleration is: 

A.
B.
C.
D.
Answer: A
69)   

Which has only magnitude but no direction? 

A.
B.
C.
D.
Answer: C
70)   

Weight is a:

A.
B.
C.
D.
Answer: B
71)   

 Work done depends on:

A.
B.
C.
D.
Answer: C
72)   

 Power can be increased by:

A.
B.
C.
D.
Answer: B
73)   

 A heavier object has more: 

A.
B.
C.
D.
Answer: B
74)   

The quantity m × g × h represents:

A.
B.
C.
D.
Answer: C
75)   

 The energy possessed due to both mass and velocity: 

A.
B.
C.
D.
Answer: A