ENGINEERING MECHANICS MCQ-:07

Q.1 What is the length of a second pendulum?

A. 100 cm

B. 75 cm

C. 99.4 cm

D. 95.3 cm

Ans-: C

Q.2 In second pendulum, the pendulum executes _____ per second. 

A. One beat

B. Two beat

C. Three beat

D. Four beat

Ans-: A

Q.3 Two forces can be equilibrium only if they are equal in magnitude, opposite in direction, and collinear in action .

A. Law of superposition

B. Law of equilibrium 

C. Law of moments 

D. Law of dynamic friction

Ans-: B

Q.4 According to law of dynamic friction,  friction force ______ at a slow rate with the increase of speed.

A. Increases 

B. Constant 

C. Decrease 

D. Zero

Ans-: C

Q.5 When a body starts moving , the force of friction offered by the surface is called ___. 

A. Static friction 

B. Dynamic friction 

C. Limiting friction 

D. Force of friction 

Ans-: B

Q.6 A body in simple harmonic motion will have maximum velocity when it's amplitu-de is _____.

A. Zero

B. Maximum 

C. One

D. Minimum 

Ans-: A

Q.7 When a ship displace water equal to its own _____ it will not sink.

A. Volume 

B. Density 

C. Surface area

D. Weight 

Ans-: D

Q.8 The period of oscillation of a simple pendulum depends on the _____.

A. Density of Bob

B. It's effective length

C. Mass of Bob 

D. Weight of Bob 

Ans-: B

Q.9 For a falling body , the sum of kinetic and potential energy is ______.

A. Zero

B. Constant at all point

C. Maximum at starting point 

D. Minimum at starting point 

Ans-: B

Q.10 In simple harmonic motion the acce-leration is proportional to ____.

A. Velocity 

B. Displacement 

C. Distance 

D. Time 

Ans-: B