Theory of Machine Lower pairs are those which have Two elements that permit relative motion Elements of pairs not held together mechanically Surface contact between the two elements when in motion Point or line contact between the two elements when in motion Two elements that permit relative motion Elements of pairs not held together mechanically Surface contact between the two elements when in motion Point or line contact between the two elements when in motion ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In locomotives, the ratio of the connecting rod length to me crank radius is kept very large in order to Minimize the effect of secondary forces To start the locomotive quickly Minimize the effect of primary forces Have perfect balancing Minimize the effect of secondary forces To start the locomotive quickly Minimize the effect of primary forces Have perfect balancing ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The velocity of piston in a reciprocating steam engine is given by (where ω = Angular velocity of crank, r = Radius of crank pin circle, θ = Angle turned by crank from inner dead center, and n = Ratio of length of connecting rod to the radius of crank) ωr [cos θ + (cos 2θ/n)] ωr [sin θ + (sin 2θ/n)] ω²r [cos θ + (cos 2θ/n)] ω²r [sin θ + (sin 2θ/n)] ωr [cos θ + (cos 2θ/n)] ωr [sin θ + (sin 2θ/n)] ω²r [cos θ + (cos 2θ/n)] ω²r [sin θ + (sin 2θ/n)] ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When the pitching of a ship is __________ the effect of gyroscopic couple acting on it will be to move the ship towards port side. Backward Downward Upward Forward Backward Downward Upward Forward ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Crowning on pulleys helps In increasing velocity ratio In decreasing the slip of the belt Increase belt and pulley life For automatic adjustment of belt position so that belt runs centrally In increasing velocity ratio In decreasing the slip of the belt Increase belt and pulley life For automatic adjustment of belt position so that belt runs centrally ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When two links are connected by a pin joint, their instantaneous center lies At the pin joint At the center of curvature At the center of circle On their point of contact At the pin joint At the center of curvature At the center of circle On their point of contact ANSWER DOWNLOAD EXAMIANS APP
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