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

126)   

Which quantity has both magnitude and direction? 

A.
B.
C.
D.
Answer: D
127)   

The energy stored in a stretched rubber band is: 

A.
B.
C.
D.
Answer: B
128)   

The SI unit of work is: 

A.
B.
C.
D.
Answer: C
129)   

A machine with 100% efficiency is called:

A.
B.
C.
D.
Answer: A
130)   

The formula for kinetic energy is:

A.
B.
C.
D.
Answer: A
131)   

If a body moves equal distance in equal intervals of time, then the motion is:

A.
B.
C.
D.
Answer: A
132)   

What is the relation between velocity and acceleration?

A.
B.
C.
D.
Answer: A
133)   

Which of the following affects potential energy?

A.
B.
C.
D.
Answer: B
134)   

A body falling from a height converts its:

A.
B.
C.
D.
Answer: A
135)   

 Which of the following is a vector quantity?

A.
B.
C.
D.
Answer: C
136)   

If mass = 10 kg and g = 9.8 m/s², then weight = ?

A.
B.
C.
D.
Answer: C
137)   

In which motion does speed change continuously?

A.
B.
C.
D.
Answer: B
138)   

Horse Power is commonly used to rate:

A.
B.
C.
D.
Answer: A
139)   

Which of the following is equal to work?

A.
B.
C.
D.
Answer: A
140)   

Which one is a derived quantity? 

A.
B.
C.
D.
Answer: C
141)   

The term "retardation" means:

A.
B.
C.
D.
Answer: B
142)   

1 kilowatt-hour equals: 

A.
B.
C.
D.
Answer: C
143)   

 Energy conversion in hydroelectric plants is:

A.
B.
C.
D.
Answer: C
144)   

The energy possessed by flowing water is:

A.
B.
C.
D.
Answer: A
145)   

The SI unit of acceleration: 

A.
B.
C.
D.
Answer: B
146)   

Which of the following machines has the highest efficiency?

A.
B.
C.
D.
Answer: C
147)   

One newton is the force required to: 

A.
B.
C.
D.
Answer: C
148)   

The gravitational acceleration on Earth is:

A.
B.
C.
D.
Answer: B
149)   

Velocity is zero when: 

A.
B.
C.
D.
Answer: B
150)   

Specific gravity is the ratio of: 

A.
B.
C.
D.
Answer: B