Q. When the speed of the engine fluctuates continuously above and below the mean speed, the governor is said to be

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Q. 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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Q. 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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Q. In a four stroke I.C. engine, the turning moment during the compression stroke is

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Q. The module is the reciprocal of diametral pitch.

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Q. If the controlling force line for a spring controlled governor when produced intersects the Y-axis at the origin, then the governor is said to be

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Q. In a reciprocating steam engine, when the crank has turned from inner dead centre through an angle θ, the angular acceleration of the connecting rod is given by

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Q. If the controlling force line for a spring controlled governor when produced intersects the Y-axis above the origin, then the governor is said to be unstable.

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Q. The inversion of a mechanism is

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Q. The coefficient of fluctuation of energy is the ratio of maximum energy to the minimum energy.

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Q. When the nature of contact between the elements of a pair is such that it can only slide relative to the other, the pair is known as a

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Q. The velocity of a particle moving with simple harmonic motion, at any instant is given by (where ω = Displacement of the particle from mean position)

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Q. 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 centre, and n = Ratio of length of connecting rod to the radius of crank)

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Q. Which of the following is a higher pair?

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Q. When the belt is stationary, it is subjected to some tension known as initial tension. The value of this tension is equal to the

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Q. In a force-closed pair, the two elements of a pair are not held together mechanically.

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Q. Maximum fluctuation of energy in a flywheel is equal to (where I = Mass moment of inertia of the flywheel, E = Maximum fluctuation of energy, CS = Coefficient of fluctuation of speed, and ω = Mean angular speed = )

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Q. The coriolis component of acceleration acts

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Q. The primary unbalanced force is maximum __________ in one revolution of the crank.

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Q. The instantaneous centres which vary with the configuration of mechanism, are called

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