Theory of Machine A single degree of freedom system is given by, m × (d²x/dt²) + c × (dx/dt) + sx = F.cosω.t with usual notations. It represents Free vibration with damping Forced vibration without damping Free vibration without damping Forced vibration with damping Free vibration with damping Forced vibration without damping Free vibration without damping Forced vibration with damping ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A mechanism _________ for transmitting or transforming motion. Can not be used Unpredictable Can be used None of these Can not be used Unpredictable Can be used None of these ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Cross head and guides form a Turning pair Lower pair Higher pair Sliding pair Turning pair Lower pair Higher pair Sliding pair ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When the two elements of a pair have __________ when in motion, it is said to a lower pair. None of these Body contact Line or point contact Surface contact None of these Body contact Line or point contact Surface contact 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 8 fn 4 fn 2 fn fn/2 8 fn 4 fn ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Efficiency of a screw jack is given by tan (α + φ)/tanα tan (α - φ)/tanα tanα/tan (α - φ) tanα/tan (α +φ) tan (α + φ)/tanα tan (α - φ)/tanα tanα/tan (α - φ) tanα/tan (α +φ) ANSWER DOWNLOAD EXAMIANS APP
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