Theory of Machine In a reciprocating steam engine, when the crank has turned from inner dead centre through an angle θ, the angular velocity of the connecting rod is given by ω sinθ/(n² - cos²θ)1/2 ω cosθ/(n² - sin²θ)1/2 ω cosθ/(n² - cos²θ)1/2 ω sinθ/(n² - sin²θ)1/2 ω sinθ/(n² - cos²θ)1/2 ω cosθ/(n² - sin²θ)1/2 ω cosθ/(n² - cos²θ)1/2 ω sinθ/(n² - sin²θ)1/2 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Kinematic pairs are those which have two elements that Permit relative motion Are held together Have surface contact Have line contact Permit relative motion Are held together Have surface contact Have line contact ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The frictional torque transmitted in a flat pivot bearing, assuming uniform wear, is(Where μ = Coefficient of friction, W=Load over the bearing, R=Radius of bearing) ¾μWR ²/₃ μWR μwr ½μWR ¾μWR ²/₃ μWR μwr ½μWR ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Coriolis component is encountered in Quick return mechanism of shaper Four bar chain mechanism Slider crank mechanism Both (A) and (C) above Quick return mechanism of shaper Four bar chain mechanism Slider crank mechanism Both (A) and (C) above ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The main disadvantage of the sliding pair is that it is Both (A) and (B) above Difficult to manufacture Wears rapidly Bulky Both (A) and (B) above Difficult to manufacture Wears rapidly Bulky ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The natural frequency of free transverse vibrations due to uniformly distributed load acting over a simply supported shaft is (where δS = Static deflection of simply supported shaft due to uniformly distributed load) 0.571/ √δS 0.5615/ √δS 0.4985/ √δS 0.6253/ √δS 0.571/ √δS 0.5615/ √δS 0.4985/ √δS 0.6253/ √δS ANSWER DOWNLOAD EXAMIANS APP
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