Theory of Machine The velocity of the belt for maximum power is (where m = Mass of the belt in kg per meter length) (T.g)/3 √(3m/T) √(T/3m) T/3 (T.g)/3 √(3m/T) √(T/3m) T/3 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. 9,360 r.p.m. 6,000 r.p.m. 12,000 r.p.m. 5,367 r.p.m. 9,360 r.p.m. 6,000 r.p.m. 12,000 r.p.m. ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The frequency of oscillation at compared to earth will be 2.44 times less 2.44 times more 6 times less 6 times more 2.44 times less 2.44 times more 6 times less 6 times more ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A simple spring-mass vibrating system has a natural frequency of fn. If the spring stiffness is halved and the mass is doubled, then the natural frequency will become 2 fn fn/2 4 fn 8 fn 2 fn fn/2 4 fn 8 fn ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In order to facilitate starting of locomotive in any position, the cranks of a locomotive with two cylinders, are placed at 120° to each other 180° to each other 45° to each other 90° to each other 120° to each other 180° to each other 45° to each other 90° to each other ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The natural frequency of free longitudinal vibrations is equal to (where m = Mass of the body, s = Stiffness of the body, and δ = Static deflection of the body) 1/2π × √(s/m) Any one of the listed here 1/2π × √(g/δ) 0.4985/√δ 1/2π × √(s/m) Any one of the listed here 1/2π × √(g/δ) 0.4985/√δ ANSWER DOWNLOAD EXAMIANS APP
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