Q. When the crank is at the inner dead centre, in a reciprocating steam engine, then the acceleration of the piston will be

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Q. When the tip of a tooth undercuts the root on its mating gear, it is known as interference.

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Q. Under logarithmic decrement, the amplitude of successive vibrations are

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Q. The efficiency of a screw jack is maximum, when (where α = Helix angle, and φ = Angle of friction)

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Q. A fixed gear having 200 teeth is in mesh with another gear having 50 teeth. The two gears are connected by an arm. The number of turns made by the smaller gear for one revolution of arm about the centre of bigger gear is

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Q. In a cone pulley, if the sum of radii of the pulleys on the driving and driven shafts is Constant, then

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Q. The critical speed of a shaft depends upon its

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Q. Which of the following mechanism is an approximate straight line motion mechanism?

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Q. A shaft carrying two rotors at its ends will have

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Q. When a mass of a critically damped single degree of freedom system is deflected from its equilibrium position and released, then it will

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Q. The friction experienced by a body, when at rest, is known as static friction.

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Q. The instantaneous centre of a rigid thin disc rolling on a plane rigid surface is located at

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Q. In a flat collar pivot bearing, the moment due to friction is proportional to

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Q. The coefficient of fluctuation of speed is __________ of maximum fluctuation of speed and the mean speed.

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Q. A rigid body, under the action of external forces, can be replaced by two masses placed at a fixed distance apart. The two masses form an equivalent dynamical system, if

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Q. When two pulleys are connected by means of a cross belt drive, then both the pulleys will rotate in __________ directions.

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Q. The pitching of a ship produces forces on the bearings which act __________ to the motion of the ship.

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Q. At the node, the shaft remains unaffected by the vibration.

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Q. The two links OA and OB are connected by a pin joint at O. If the link OA turns with angular velocity ω1 rad/s in the clockwise direction and the link OB turns with angular velocity ω2 rad/s in the anti-clockwise direction, then the rubbing velocity at the pin joint O is (where r = Radius of the pin at O)

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Q. When the two elements of a pair have __________ when in motion, it is said to a lower pair.

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