Theory of Machine The equation of free vibrations of a system is (d²x/dt²) +36 π²x, its natural frequency is 3π Hz 3 Hz 6π Hz 6 Hz 3π Hz 3 Hz 6π Hz 6 Hz 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 Torsional vibrations Longitudinal vibrations Transverse vibrations All of these Torsional vibrations Longitudinal vibrations Transverse vibrations All of these ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The steering of a ship means None of these Rolling of a complete ship sideways Turning of a complete ship in a curve towards right or left, while it moves forward Movement of a complete ship up and down in vertical plane about transverse axis None of these Rolling of a complete ship sideways Turning of a complete ship in a curve towards right or left, while it moves forward Movement of a complete ship up and down in vertical plane about transverse axis ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When the nature of contact between the elements of a pair is such that it can only slide relative to the other, the pair is known as a Spherical pair Turning pair Screw pair Sliding pair Spherical pair Turning pair Screw pair Sliding pair 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 45° to each other 90° to each other 180° to each other 120° to each other 45° to each other 90° to each other 180° to each other ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The tractive force in a locomotive with two cylinders is given by (where c = Fraction of reciprocating parts per cylinder, m = Mass of reciprocating parts, ω = Angular speed of crank, r = Radius of crank, and θ = Angle of inclination of crank to the line of stroke) m.ω².r sinθ m.ω².r (cosθ - sinθ) (1 - c).m.ω².r (cosθ - sinθ) m.ω².r cosθ m.ω².r sinθ m.ω².r (cosθ - sinθ) (1 - c).m.ω².r (cosθ - sinθ) m.ω².r cosθ ANSWER DOWNLOAD EXAMIANS APP
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