Q. A point B on a rigid link AB moves with respect to A with angular velocity ω rad/s. The radial component of the acceleration of B with respect to A, is (where vBA = Linear velocity of B with respect to A)

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Q. Critical damping is a function of

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Q. The relation between me number of links (l) and the number of binary joints (j) for a kinematic chain having constrained motion is given by l = l - 2. If the left hand side of this equation is greater than the right hand side, then the chain is

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Q. A Porter governor can not be isochronous.

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Q. The frictional torque transmitted by a cone clutch is same as that of

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Q. When two non-intersecting and non-coplaner shafts are connected by gears, the arrangement is known as helical gearing.

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Q. When the elements of a pair are kept in contact by the action of external forces, the pair is said to be a

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Q. The centrifugal tension in belts

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Q. In a Hartnell governor, the compression of the spring is __________ the lift of the sleeve.

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Q. The controlling force diagram for a spring controlled governor is a curve passing through the origin.

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Q. The lower pairs are __________ pairs.

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Q. The arrangement is called bevel gearing, when two __________ are connected by gears.

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Q. The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because, the

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Q. The maximum fluctuation of speed is the

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Q. A single degree of freedom system is given by , with usual notations. It represents

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Q. In a Hartnell governor, the lift of the sleeve is given by (where r1 and r2 = Max. and min. radii of rotation, x = Length of ball arm of the lever, and y = Length of sleeve arm of the lever)

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Q. When a mechanism is required to transmit power or to do some particular type of work, then it becomes a machine.

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Q. The transmissibility, for all values of damping factor, will be less than unity, if ω/ωn is

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Q. When a shaking force is transmitted through the springs, damping becomes detrimental when the ratio of its frequency to the natural frequency is greater than

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Q. When the nature of contact between the elements of a pair is such that it can turn or revolve about a fixed axis, the pair is known as a rolling pair.

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