Theory of Machine The equation of motion for a vibrating system with viscous damping is (d²x/dt²) + (c/m). (dx/dt) + (s/m). x = 0. If the roots of this equation are real, then the system will be Over-damped Under damped Without vibrations Critically damped Over-damped Under damped Without vibrations Critically damped ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a multiple V-belt drive, if one of the belts is broken, then we should replace All the belts The broken belt only The broken belt and the belts on either side of it None of these All the belts The broken belt only The broken belt and the belts on either side of it None of these ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line of stroke PO and rotates with uniform angular velocity at ω rad/s. The Klien's acceleration diagram for determining the acceleration of the piston P is shown by quadrilateral CQNO, the acceleration of the piston is _________ when the crank OC and connecting rod PC are at right angles to each other. Any -ve value Zero Infinity Any +ve value Any -ve value Zero Infinity Any +ve value ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The maximum or minimum value of the swaying couple is ± (a/√2) (1 - c) m.ω².r ± c.m.ω².r ± a (1 - c) m.ω².r ± 2a (1 - c) m.ω².r ± (a/√2) (1 - c) m.ω².r ± c.m.ω².r ± a (1 - c) m.ω².r ± 2a (1 - c) m.ω².r ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The absolute acceleration of any point ‘P’ in a link about center of rotation ‘O’ is At 45° to PO None of the listed here Perpendicular to PO Along PO At 45° to PO None of the listed here Perpendicular to PO Along PO ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a steam engine, one method of obtaining the earlier cut-off with a simple slide valve is by increasing the angle of advance of the eccentric while the throw of the eccentric, steam lap and exhaust lap are kept constant. This method will Reduce maximum opening of port to steam Cause withdrawing or throttling of steam All of these Reduce length of effective stroke of piston Reduce maximum opening of port to steam Cause withdrawing or throttling of steam All of these Reduce length of effective stroke of piston ANSWER DOWNLOAD EXAMIANS APP
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