Q. In a steam engine, the distance by which the inner edge of the D-slide valve overlaps the steam port is called lead.

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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 transverse vibration is same as for longitudinal vibration.

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Q. A spring controlled governor is said to be unstable when the controlling force

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Q. The equivalent length of a simple pendulum depends upon the distance between the point of suspension and the centre of gravity.

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Q. Balancing of rotating and reciprocating parts of an engine is necessary when it runs at

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Q. When the nature of contact between the elements of a pair is such that one element can turn about the other by screw threads, the pair is known as a

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Q. In a locomotive, the resultant unbalanced force due to the two cylinders along the line of stroke, is known as

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Q. The axis of precession is __________ to the plane in which the axis of spin is going to rotate.

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Q. Bifilar suspension method is used to find the

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Q. The equation of motion for a vibrating system with viscous damping is If the roots of this equation are real, then the system will be

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Q. The motion between a pair when limited to a definite direction, irrespective of the direction of force applied, is known as

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Q. The motion of a shaft in a circular hole is an example of

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Q. The brake commonly used in railway trains is

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Q. The face of the tooth is the

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Q. A Hartnell governor has its controlling force (Fc) given by Fc = ar + b, where r is the radius of rotation and a and b are constants. The governor becomes isochronous when

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Q. The acceleration of the particle moving with simple harmonic motion is __________ at the mean position.

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Q. The ratio of height of Porter governor (when length of arms and links are equal) to the height of Watt's governor is (where m = Mass of the ball, and M = Mass on the sleeve)

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Q. The distance by which the __________ of the D-slide valve overlaps the steam port is called exhaust lap.

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Q. The stress induced in a body will be shear stress, when it is subjected to

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Q. A machine mounted on a single coil spring has a period of free vibration of tp . If the spring is cut into four equal parts and placed in parallel and the machine is mounted on them, then the period of free vibration of the new system will become

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