Theory of Machine In an ideal machine, the output as compared to input is More Less Equal May be less or more depending on efficiency More Less Equal May be less or more depending on efficiency ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The critical speed of a shaft with a disc supported in between is equal to the natural frequency of the system in Longitudinal vibrations Torsional vibrations Transverse vibrations All of these Longitudinal vibrations Torsional vibrations Transverse vibrations All of these ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The secondary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given by (where m = Mass of reciprocating parts, ω = Angular speed of crank, r = Radius of crank, θ = Angle of inclination of crank with the line of stroke, and n = Ratio of the length of connecting rod to radius of crank) m.ω².r cosθ m.ω².r sinθ m.ω².r (cos 2θ/n) m.ω².r (sin 2θ/n) m.ω².r cosθ m.ω².r sinθ m.ω².r (cos 2θ/n) m.ω².r (sin 2θ/n) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In under damped vibrating system, the amplitude of vibration Decreases linearly with time Decreases exponentially with time Increases linearly with time Increases exponentially with time Decreases linearly with time Decreases exponentially with time Increases linearly with time Increases exponentially with time ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The motion of a shaft in a circular hole is an example of Completely constrained motion Successfully constrained motion Incompletely constrained motion None of these Completely constrained motion Successfully constrained motion Incompletely constrained motion None of these 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
EXAMIANS