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Mechanical - 540 - UNIT - 08 - Centre of Gravity Levers and Simple - MCQ

101)   

The CG of a triangle lies at the: 

A.
B.
C.
D.
Answer: A
102)   

CG of a solid cone lies at a height of: 

A.
B.
C.
D.
Answer: D
103)   

A pair of scissors is an example of: 

A.
B.
C.
D.
Answer: A
104)   

A spanner (wrench) is used to: 

A.
B.
C.
D.
Answer: B
105)   

A machine with MA < 1 is used when: 

A.
B.
C.
D.
Answer: A
106)   

Mechanical advantage is always less than VR due to: 

A.
B.
C.
D.
Answer: A
107)   

Which of the following has a fixed VR regardless of load? 

A.
B.
C.
D.
Answer: A
108)   

Efficiency decreases with: 

A.
B.
C.
D.
Answer: B
109)   

To improve machine efficiency, one should: 

A.
B.
C.
D.
Answer: C
110)   

Which law explains the relationship between stress and strain?

A.
B.
C.
D.
Answer: B
111)   

Elastic limit is the point beyond which: 

A.
B.
C.
D.
Answer: B
112)   

Yield point is the:

A.
B.
C.
D.
Answer: A
113)   

Stress is directly proportional to: 

A.
B.
C.
D.
Answer: A
114)   

Young’s modulus has unit same as:

A.
B.
C.
D.
Answer: B
115)   

Young’s modulus is high for: 

A.
B.
C.
D.
Answer: A
116)   

The CG of a uniform ring lies at: 

A.
B.
C.
D.
Answer: A
117)   

Centre of gravity depends on: 

A.
B.
C.
D.
Answer: A
118)   

Pulley systems are used to: 

A.
B.
C.
D.
Answer: B
119)   

A wheel and axle is a type of:

A.
B.
C.
D.
Answer: A
120)   

Inclined plane reduces the effort by:

A.
B.
C.
D.
Answer: B
121)   

If efficiency = 100%, then: 

A.
B.
C.
D.
Answer: D
122)   

Effort lost due to friction is called:

A.
B.
C.
D.
Answer: B
123)   

A machine with VR = 4 and MA = 2 has efficiency: 

A.
B.
C.
D.
Answer: A
124)   

Hooke’s law fails beyond: 

A.
B.
C.
D.
Answer: C
125)   

Which of the following is most elastic?

A.
B.
C.
D.
Answer: B