Mechanical Engineering :: Theory of Machine
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Which of the following statement is correct ?
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When the speed of the engine fluctuates continuously above and below the mean speed, the governor is said to be
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When two pulleys of different diameters are connected by means of an open belt, the angle of contact at the __________ pulley must be taken into consideration.
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The maximum frictional force, which comes into play, when an body just begins to slide over the surface of the other body, is known as
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In a four stroke I.C. engine, the turning moment during the compression stroke is
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A body will begin to move down an inclined plane, if the angle of inclination of the plane is __________ the angle of friction.
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The fundamental equation for correct steering is (where φ and α = Angle through which the axis of the outer wheel and inner wheel turns respectively, c = Distance between the pivots of the front axles, and d = Wheel base)
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The height of a Watt's governor is
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A rotor supported at A and B carries two masses as shown in the below figure. The rotor is
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For an isochronous Hartnell governor (where r1 and r2 = Maximum and minimum radius of rotation of balls respectively, S1 and S2 = Maximum and minimum force exerted on the sleeve respectively, and M = Mass on the sleeve)
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A.
The periodic time of a particle moving with simple harmonic motion is the time taken by a particle for one complete oscillation.
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B.
The periodic time of a particle moving with simple harmonic motion is directly proportional to its angular velocity.
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C.
The velocity of a particle moving with simple harmonic motion is zero at the mean position.
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D.
The acceleration of the particle moving with simple harmonic motion is maximum at the mean position.
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