Theory of Machine The rotating shafts tend to vibrate violently at whirling speeds because 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 Resonance is caused due to the heavy mass of the rotor Bearing centre line coincides with the axis 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 vBA × AB v²BA /AB vBA /AB v²BA vBA × AB v²BA /AB vBA /AB ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When the particles of a body moves perpendicular to its axis, then the body is said to have Transverse vibration None of these Longitudinal vibration Torsional vibration Transverse vibration None of these Longitudinal vibration Torsional vibration ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The ratio of maximum fluctuation of energy to the work-done per cycle is called Fluctuation of energy Maximum fluctuation of energy None of these Coefficient of fluctuation of energy Fluctuation of energy Maximum fluctuation of energy None of these Coefficient of fluctuation of energy ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Which of the following is an inversion of a single slider crank chain? Pendulum pump Rotary internal combustion engine Oscillating cylinder engine All of these Pendulum pump Rotary internal combustion engine Oscillating cylinder engine All of these ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A body is said to be under forced vibrations, when There is a reduction in amplitude after every cycle of vibration No external force acts on a body, after giving it an initial displacement None of these A body vibrates under the influence of external force There is a reduction in amplitude after every cycle of vibration No external force acts on a body, after giving it an initial displacement None of these A body vibrates under the influence of external force ANSWER DOWNLOAD EXAMIANS APP
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