Q. Efficiency of a screw jack is given by

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Q. The ratio of the driving tensions for V-belts is __________ times that of flat belts. (where β = Semi-angle of the groove)

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Q. The secondary unbalanced force is __________ the primary unbalanced force.

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Q. The Ackerman steering gear mechanism is preferred to the Davis steering gear mechanism, because

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Q. The two links are said to have a pure rolling contact, when their instantaneous centre __________ on their point of contact.

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Q. One end of a helical spring is fixed while the other end carries the load W which moves with simple harmonic motion. The frequency of motion is given by (where δ = Deflection of the spring)

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Q. The brake commonly used in motor cars is internal expanding brake.

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Q. In order to give a complete secondary balance of a multi-cylinder in-line engine,

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Q. A point B on a rigid link AB moves with respect to A with angular velocity ω rad/s. The total acceleration of B with respect to A will be equal to

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Q. A spring controlled governor is said to be stable if the controlling force line when produced intersects the Y-axis

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Q. When the radius of rotation of balls __________ as the equilibrium speed increases, the governor is said to be unstable.

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Q. The equation of motion for a vibrating system with viscous damping is , if the roots of the equation are __________ then the system will be under damped.

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Q. The engine of an aeroplane rotates in clockwise direction when seen from the tail end and the aeroplane takes a turn to the left. The effect of gyroscopic couple on the aeroplane will be

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Q. A mechanism is an assemblage of

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Q. In a simple harmonic motion, the velocity vector with respect to displacement vector

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Q. When a point moves along a straight line, its acceleration will have

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Q. The primary unbalanced force of reciprocating masses is inversely proportional to the crank radius.

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Q. The acceleration of a flat-faced follower when it has contact with the flank of a circular arc cam, is given by

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Q. The mechanism forms a structure, when the number of degrees of freedom (n) is equal to

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Q. The sense of coriolis component 2 ωv is same as that of the relative velocity vector v rotated at

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