00 degrees of freedom
D:-None of the above
Correct Answer: 8

Question72:-A vibrating system consist of a mass of 50 kg, a spring with a stiffness of 30 kN/m and a damper. The damping provided is only 30% of the critical value. Determine the
damping factor.

[
8-028
0.77
0:05

Correct Answer: Option:

भि

കാം
B:-0.33 ‏ره‎
‎Coty
‎D:0.57 ‏وہ‎
‎Correct Answer: Option-C
Question74::Which damping system preferred to design large guns 7
‘A-Undamped system
B:-Underdamped system
೦-೦೫0 damped system
D:-Overdamped system
Correct Answer: Option-C
Question75:-Machines are usually mounted on springs or dampers to
‘Acincrease transmissibility
B:-Reduce transmissibility
೦೬೦/5 resonance
D-None of the above
Correct Answer: Option ®
Question76:-For a system to vibrate, it must possess
‘Acnertial and restoring elements
B:-Inertial and damping elements
‘C-Damping and restoring elements
०-५॥ of the above
Correct Answer:- ೦೧000
Question77:-The increase of temperature
i Increase the viscosity of gas
i, Increases the viscosity of liquid
ili, Decreases the viscosity of liquid
iv. Decreases the viscosity of gas
Which of these statements are correct ?
‘Aci and ii only
8:1 and ॥ ०११४
Coli and iv only
ದ: and iv only
Correct Answer:- ೦೧000
Question78:-A fluid, which shows no deformation up to a certain point (yield stress) and beyond that shear stress is proportional to the rate of shear strain, is known as
‘Ac Dilatant fluid
B:-Newtonian fluid
೦೫90060 plastic fluid
പടി plastic fluid
Correct Answer:- Option-D

Question79:-Poise is the unit of