Theory of Machine The natural frequency of free transverse vibrations due to a point load acting over a simply supported shaft is equal to (where δ = Static deflection of a simply supported shaft due to the point load) 0.4985/√δ 0.6253/√δ 0.571/√δ 0.5615/√δ 0.4985/√δ 0.6253/√δ 0.571/√δ 0.5615/√δ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The rotating shafts tend to vibrate violently at whirling speeds because Resonance is caused due to the heavy mass of the rotor Bearing centre line coincides with the axis The shafts are rotating at very high speeds The system is unbalanced Resonance is caused due to the heavy mass of the rotor Bearing centre line coincides with the axis The shafts are rotating at very high speeds The system is unbalanced ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The secondary unbalanced force is maximum when the angle of inclination of the crank with the line of stroke is 0° and 90° 180° and 360° Both (A) and (B) None of these 0° and 90° 180° and 360° Both (A) and (B) None of these ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The equation of motion for a single degree of freedom system with viscous damping is 4(dx²/dt²) + 9(dx/dt) + 16x. The damping ratio of the system is 30195 9/128 44082 44090 30195 9/128 44082 44090 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a steam engine, the earlier cut-off with a simple slide valve may be obtained by increasing the steam lap and the angle of advance of the eccentric but keeping constant the travel and lead of the valve, this method will Reduce maximum opening of port to steam Cause withdrawing or throttling of steam All of the listed here Reduce length of effective stroke of piston Reduce maximum opening of port to steam Cause withdrawing or throttling of steam All of the listed here Reduce length of effective stroke of piston ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Which of the following governor is used to drive a gramophone? Pickering governor Porter governor Hartnell governor Watt governor Pickering governor Porter governor Hartnell governor Watt governor ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS