Theory of Machine When a body moves with simple harmonic motion, the product of its periodic time and frequency is equal to One π/2 Zero π One π/2 Zero π ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because, the Unbalanced forces are not dangerous at higher speeds Effects of unbalances are proportional to the square of the speed Unbalanced couples are caused only at higher speeds Effects of unbalances are directly proportional to the speed Unbalanced forces are not dangerous at higher speeds Effects of unbalances are proportional to the square of the speed Unbalanced couples are caused only at higher speeds Effects of unbalances are directly proportional to the speed 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 cosθ (1 - c).m.ω².r (cosθ - sinθ) m.ω².r (cosθ - sinθ) m.ω².r sinθ m.ω².r cosθ (1 - c).m.ω².r (cosθ - sinθ) m.ω².r (cosθ - sinθ) m.ω².r sinθ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In involute gears, the pressure angle is Dependent on the size of gears Always variable Always constant Dependent on the size of teeth Dependent on the size of gears Always variable Always constant Dependent on the size of teeth ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The sensitiveness of the governor _____ as the speed range decreases. Increases Decreases Remains unaffected None of the listed here Increases Decreases Remains unaffected None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Under logarithmic decrement, the amplitude of successive vibrations are In logarithmic progression In arithmetic progression Constant In geometric progression In logarithmic progression In arithmetic progression Constant In geometric progression ANSWER DOWNLOAD EXAMIANS APP
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