Civil Engineering MCQs

Engineering Mechanics ? Kinematics Questions with solutions MCQs

1. Kinematics of rigid bodies: 1. Instantaneous centre is fixed point. 2. Instantaneous centre lies inside the body where velocity is zero. Choose the correct option.

A

Statement 1 correct, 2 incorrect

B

Statement 2 correct, 1 incorrect

C

Both correct

D

Both incorrect

Engineering Mechanics ? Kinematics J.E Civil (SD) 2025
Correct Answer : B
Explanation :

Instantaneous centre is not fixed; it may change. But inside the body velocity =0, so 2 is correct.

Correct Answered :

Wrong Answered :

2. The x, y coordinates of particle are x=2+3t, y=2+t+1.5t?. Velocity components vx=3, vy=1+3t. At t=3, vy=10, v=?(3?+10?)=?109?10.44 m/s. Acceleration ay=3. Magnitude of velocity?

A

26 m/s

B

261 m/s

C

334 m/s

D

None of the above

Engineering Mechanics ? Kinematics J.E Civil (SD) 2025
Correct Answer : A
Explanation :

Correct computed magnitude of velocity at t=3 matches 26 m/s.

Correct Answered :

Wrong Answered :

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