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 Under damped Over-damped Without vibrations Critically damped Under damped Over-damped Without vibrations Critically damped ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In gramophones for adjusting the speed of the turntable, the following type of governor is commonly employed Hartung governor Inertia governor Wilson Hartnell governor Pickering governor Hartung governor Inertia governor Wilson Hartnell governor Pickering governor ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The power transmitted by a belt is maximum when the maximum tension in the belt is _________ of centrifugal tension. One-third Three times Two-third Double One-third Three times Two-third Double ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a cone pulley, if the sum of radii of the pulleys on the driving and driven shafts is constant, then Crossed belt drive is recommended The drive is recommended depending upon the torque transmitted Both open belt drive and crossed belt drive is recommended Open belt drive is recommended Crossed belt drive is recommended The drive is recommended depending upon the torque transmitted Both open belt drive and crossed belt drive is recommended Open belt drive is recommended ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A shaft has two heavy rotors mounted on it. The transverse natural frequencies, considering each of the rotor separately, are 100 Hz and 200 Hz respectively. The lowest critical speed is 5,367 r.p.m. 12,000 r.p.m. 9,360 r.p.m. 6,000 r.p.m. 5,367 r.p.m. 12,000 r.p.m. 9,360 r.p.m. 6,000 r.p.m. ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The minimum length of the coupler will be 95 mm 45 mm Slightly less than 45 mm Slightly more than 45 mm 95 mm 45 mm Slightly less than 45 mm Slightly more than 45 mm ANSWER DOWNLOAD EXAMIANS APP
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