Theory of Machine Angle of ascent of cam is defined as the angle During which the follower returns to its initial position Moved by the cam from the instant the follower begins to rise, till it reaches its highest position Of rotation of the cam for a definite displacement of the follower Through which the cam rotates during the period in which the follower remains in highest position During which the follower returns to its initial position Moved by the cam from the instant the follower begins to rise, till it reaches its highest position Of rotation of the cam for a definite displacement of the follower Through which the cam rotates during the period in which the follower remains in highest position ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Governor is used in automobile to Maintain constant engine speed Maximize the fuel economy Decrease the variation of speed Limit the vehicle speed Maintain constant engine speed Maximize the fuel economy Decrease the variation of speed Limit the vehicle speed ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A disc is a spinning with an angular velocity ω rad/s about the axis of spin. The couple applied to the disc causing precession will be (where I = Mass moment of inertia of the disc, and ωP = Angular velocity of precession of the axis of spin) (1/2). I ω ωP (1/2).Iω² I ω ωP Iω² (1/2). I ω ωP (1/2).Iω² I ω ωP Iω² 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 Unbalanced couples are caused only at higher speeds Effects of unbalances are directly proportional to the speed Effects of unbalances are proportional to the square of the speed Unbalanced forces are not dangerous at higher speeds Unbalanced couples are caused only at higher speeds Effects of unbalances are directly proportional to the speed Effects of unbalances are proportional to the square of the speed ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The velocity of the rubbing surface __________ with the distance from the axis of the bearing. Remain same Increases Decreases None of these Remain same Increases Decreases None of these ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The instantaneous center of a rigid thin disc rolling on a plane rigid surface is located at The point of contact An infinite distance on the plane surface The center of the disc The point on the circumference situated vertically opposite to the contact point The point of contact An infinite distance on the plane surface The center of the disc The point on the circumference situated vertically opposite to the contact point ANSWER DOWNLOAD EXAMIANS APP
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