Q. In under damped vibrating system, if x1 and x2 are the successive values of the amplitude on the same side of the mean position, then the logarithmic decrement is equal to

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Q. The ratio of velocities of the shafts connected by Hooke's joint is given by (where N and N1 = Speed of driving and driven shafts (in r.p.m.) respectively, θ = Angle through which the arms of the cross turn, and α = Angle of inclination between the two shafts)

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Q. A shaft of mass (mc) and stiffness (s) is fixed at one end and carries a mass (m) at the other end. The natural frequency of its longitudinal vibration is equal to

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Q. Two pulleys of radii r1 and r2 and at distance x apart are connected by means of a cross belt drive. The length of the belt is

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Q. A motor car moving at a certain speed takes a left turn in a curved path. If the engine rotates in the same direction as that of wheels, men due to centrifugal force

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Q. The natural frequency of free transverse vibrations due to uniformly distributed load acting over a simply supported shaft is (where δS = Static deflection of simply supported shaft due to uniformly distributed load)

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Q. The pitching of a ship is assumed to take place with simple harmonic motion.

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Q. A pair is said to be a kinematic pair, if the relative motion between them is completely or successfully constrained.

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Q. The instantaneous centres, which moves as the mechanism moves but joints are of permanent nature, are called permanent instantaneous centres.

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Q. The efficiency of a screw jack is dependent upon the load raised or lowered.

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Q. An overdamped system, when disturbed from the equilibrium position, will not cross the equilibrium position.

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Q. A governor is said to be isochronous when range of speed is zero for all radii of rotation of the balls within the working range, neglecting friction.

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Q. The frequency of oscillation of a torsional pendulum is

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Q. The condition for correct steering of a Davis steering gear is (where α = Angle of inclination of the links to the vertical)

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

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

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

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

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