Theory of Machine Kinematic pairs are those which have two elements that Are held together Have surface contact Have line contact Permit relative motion Are held together Have surface contact Have line contact Permit relative motion ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Which of the following is a turning pair? Lead screw of a lathe with nut Shaft with collars at both ends fitted into a circular hole Piston and cylinder of a reciprocating steam engine Ball and a socket joint Lead screw of a lathe with nut Shaft with collars at both ends fitted into a circular hole Piston and cylinder of a reciprocating steam engine Ball and a socket joint ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a radial cam, the follower moves In a direction perpendicular to the cam axis In a direction parallel to the cam axis In any direction irrespective of the cam axis Along the cam axis In a direction perpendicular to the cam axis In a direction parallel to the cam axis In any direction irrespective of the cam axis Along the cam axis ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The primary 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 (cos 2θ/n) m.ω².r cosθ m.ω².r (sin 2θ/n) m.ω².r sinθ m.ω².r (cos 2θ/n) m.ω².r cosθ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Which of the following is false statement in respect of differences between machine and structure? Machines transmit mechanical work, whereas structures transmit forces In machines, relative motion exists between its members, whereas same does not exist in case of structures Machines modify movement and work, whereas structures modify forces Efficiency of machines as well as structures is below 100 % Machines transmit mechanical work, whereas structures transmit forces In machines, relative motion exists between its members, whereas same does not exist in case of structures Machines modify movement and work, whereas structures modify forces Efficiency of machines as well as structures is below 100 % ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When a mass of a critically damped single degree of freedom system is deflected from its equilibrium position and released, then it will Oscillate with increasing time period Return to equilibrium position without oscillation Oscillate with decreasing amplitude Oscillate with constant amplitude Oscillate with increasing time period Return to equilibrium position without oscillation Oscillate with decreasing amplitude Oscillate with constant amplitude ANSWER DOWNLOAD EXAMIANS APP
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