Q. A sliding bearing in which although lubricant is present, the working surfaces __________ contact each other at least part of the time, is called boundary lubricated bearing.

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Q. The contact ratio for gears is

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Q. A feather key is generally

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Q. If the tearing efficiency of a riveted joint is 50%, then the ratio of diameter of rivet to the pitch is

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Q. The ratio of circumferential stress to longitudinal stress in a thin cylinder subjected to an internal pressure is

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Q. A riveted joint is a __________ fastening.

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Q. The pressure angle of a cam is the angle between the direction of the follower motion and a normal to the pitch curve.

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Q. A fast and loose pulley drive is used when

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Q. Which of the following screw thread is adopted for power transmission in either direction?

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Q. In the assembly of pulley, key and shaft

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Q. According to I.B.R., the thickness of the boiler shell should not be less than

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Q. A bolt has

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Q. The material commonly used for machine tool bodies is

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Q. The power transmitted by a belt drive is maximum when the maximum tension in the belt is __________ the centrifugal tension.

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Q. The largest diameter of an external or internal screw thread is known as

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Q. The gears are termed as medium velocity gears, if their peripheral velocity is

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Q. In the levers of third type, the mechanical advantage is __________ one.

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Q. The edges of the boiler plates are bevelled to an angle of

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Q. Lewis form factor for 14½° composite and full depth involute system is (where T = Number of teeth)

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Q. The stretching in a belt can be controlled by __________ the stress in the belt.

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