Theory of Machine The unbalanced primary forces in a reciprocating engine are Not balanced Balanced partially Balanced by secondary forces Balanced completely Not balanced Balanced partially Balanced by secondary forces Balanced completely 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 (sin 2θ/n) m.ω².r sinθ m.ω².r cosθ m.ω².r (cos 2θ/n) m.ω².r (sin 2θ/n) m.ω².r sinθ m.ω².r cosθ m.ω².r (cos 2θ/n) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The periodic time of a compound pendulum is __________ when the distance between the point of suspension and the center of gravity is equal to the radius of gyration of the body about its center of gravity. Zero None of these Minimum Maximum Zero None of these Minimum Maximum ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Which of the following is a turning pair? Ball and a socket joint Shaft with collars at both ends fitted into a circular hole Lead screw of a lathe with nut Piston and cylinder of a reciprocating steam engine Ball and a socket joint Shaft with collars at both ends fitted into a circular hole Lead screw of a lathe with nut Piston and cylinder of a reciprocating steam engine ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The relation between the controlling force (Fc) and radius of rotation (r) for a stable spring controlled governor is Fc = ar Fc = a/r + b Fc = ar - b Fc = ar + b Fc = ar Fc = a/r + b Fc = ar - b Fc = ar + b ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Oldham’s coupling is an inversion of the kinematic chain used in Elliptical trammels Rotary engine Whitworth quick return mechanism Universal joint Elliptical trammels Rotary engine Whitworth quick return mechanism Universal joint ANSWER DOWNLOAD EXAMIANS APP
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