Theory of Machine In steady state forced vibrations, the amplitude of vibrations at resonance is __________ damping coefficient. Directly proportional to Inversely proportional to Independent of Equal to Directly proportional to Inversely proportional to Independent of Equal to ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A rotor which is balanced statically but not dynamically is supported on two bearings L apart and at high speed of the rotor, reaction on the left bearing is R. The right side of the bearing is shifted to a new position 2L apart from the left bearing. At the same rotor speed, dynamic reaction on the left bearing in the new arrangement will Remain same as before Become equal to R/2 Become equal to 2R Become equal to R/4 Remain same as before Become equal to R/2 Become equal to 2R Become equal to R/4 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A single degree of freedom system is given by, m × (d²x/dt²) + c × (dx/dt) + sx = F.cosω.t with usual notations. It represents Free vibration with damping Free vibration without damping Forced vibration without damping Forced vibration with damping Free vibration with damping Free vibration without damping Forced vibration without damping Forced vibration with damping ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a steam engine, the distance by which the outer edge of the D-slide valve overlaps the steam port is called Exhaust lap None of these Lead Steam lap Exhaust lap None of these Lead Steam lap ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A point B on a rigid link AB moves with respect to A with angular velocity ω rad/s. The radial component of the acceleration of B with respect to A, is (where vBA = Linear velocity of B with respect to A) v²BA v²BA /AB vBA × AB vBA /AB v²BA v²BA /AB vBA × AB vBA /AB ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine If the damping factor for a vibrating system is unity, then the system will be Over damped Without vibrations Critically damped Under damped Over damped Without vibrations Critically damped Under damped ANSWER DOWNLOAD EXAMIANS APP
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