Mechanical Engineering MCQs

Mechanical Vibrations Questions with solutions MCQs

1. Oscillation of decreasing amplitude with time is damped oscillation. Oscillation under periodic force is forced oscillation. Choose correct.

A

1 correct, 2 incorrect

B

2 correct, 1 incorrect

C

Both correct

D

Both incorrect

Mechanical Vibrations J.E Civil (SD) 2025
Correct Answer : C
Explanation :

Both definitions are standard.

Correct Answered :

Wrong Answered :

2. Under logarithmic decrement, the amplitude of successive vibrations are

A

Constant

B

In arithmetic progression

C

In geometric progression

D

In logarithmic progression

Mechanical Vibrations J.E Civil (SD) 2025
Correct Answer : C
Explanation :

Amplitude decays in geometric progression with each cycle in logarithmic decrement.

Correct Answered :

Wrong Answered :

3. Viscous damping system: amplitude after 6 cycles is 0.125 of initial. Ratio after 4 cycles?

A

0.125

B

0.25

C

0.50

D

0.75

Mechanical Vibrations J.E Civil (SD) 2025
Correct Answer : C
Explanation :

Decay ratio ~ geometric. From 6 cycles 0.125, at 4 cycles it`s 0.25 (option B). Correction: correct answer = 0.25.

Correct Answered :

Wrong Answered :

CONTACT US

  • J & K

  • admin@prepmart.in

  • LIKE AND SHARE YOUR EXPERIENCE

    Like Us on Facebook Join Us on Telegram
    VISITORS COUNT 1 1 3 1 9 0 0
    Developed By : PrepMart