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JSSC JE (ME) :QUIZ-8 || Vibrations
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Question 1
As shown in figure, a mass of 100 kg is held between two springs. The natural frequency of vibration of the system, in cycles/s, is
Question 2
A mass of 2 kg is attached to two identical springs each with stiffness k=40 kN/m as shown in the figure. Under frictionless condition, the natural frequency of the system in Hz is close to
Question 3
Which of the following instrument is used to measure the frequency of vibration?
Question 4
Which statement regarding damping is correct?
Question 5
A vibrating system consists of a mass of 100 kg, a spring of stiffness 10 kN/m and a damper. The damping provided is only 25 % of the critical value. What is the value of critical damping coefficient (in N/m/s)?
Question 6
The ratio of the actual damping coefficient (C. to the critical damping coefficient (cc ) is known as _________
Question 7
As compared to the time period of a simple pendulum on the earth, its time period on the moon will be
Question 8
Match List-I (property) with List-II (System) and select the correct answer using the code given below the lists:
List-I
A) Resonance
B) On-off control
C) Natural frequency
D) Feedback signal
List-II
1) Closed-loop control system
2) Free vibrations
3) Excessively large amplitude
4) Mechanical brake
List-I
A) Resonance
B) On-off control
C) Natural frequency
D) Feedback signal
List-II
1) Closed-loop control system
2) Free vibrations
3) Excessively large amplitude
4) Mechanical brake
Question 9
In a vibrating system the spring has stiffness 32 N/m and the mass 2 kg. The system is having a damper whose coefficient of viscous damping is 8 N-s/m. The system is :
Question 10
The ratio of 
for which the transmitted force is equal to the exciting force under no damping conditions___?
for which the transmitted force is equal to the exciting force under no damping conditions___?- 42 attempts
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