ரர degrees of freedom
D:-None of the above
Correct Answer: Option ®

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.

3مھ
2:8
ہج می
0:05

Correct Answer: Option:

Question73:Te natural frequency ofa spring-mass system ೈಾ . The natural frequency of tis system on the Mars if gqars = Sais

نہ 373ھ
‎B:-0.33 0,‏
‎Coty‏
‎D:0.57 oy‏
‎Correct Answer:- Option-C‏
‎Question74::Which damping system preferred to design large guns ?‏
‎‘A-Undamped system‏
‎B:-Underdamped system‏
‎Critical damped system‏
‎D:-Overdamped system‏
‎Correct Answer:- Option-C‏
‎‘Question75:-Machines are usually mounted on springs or dampers to‏
‎Acincrease transmissibility‏
‎B:-Reduce transmissibility‏
‎ಆ resonance‏
‎D-None of the above‏
‎Correct Answer:- Option ®‏
‎Question76:-For a system to vibrate, it must possess‏
‎‘Acinertial and restoring elements‏
‎B:-Inertial and damping elements‏
‎C-Damping and restoring elements‏
‎D-All of the above‏
‎Correct Answer:- Option-é‏
‎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 ili only‏
‎Bei and iionly‏
‎Coli and iv only‏
‎Dell and iv only‏
‎Correct Answer:- Option-é‏
‎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
‎A: Dilatant fluid‏
‎B:-Newtonian fluid‏
‎೦೫90060 plastic fluid‏
‎D-Ideal plastic fluid‏
‎Correct Answer:- Option-D‏

Question79:-Poise is the unit of