Q. Maximum permissible air velocity in pipelines is about __________ metre/second.

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Q. Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of

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Q. The most economical channel section for the fluid flow is the one for which the discharge is maximum for a given cross-sectional area. Vertical velocity distribution in an open channel for laminar flow can be assumed to be

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Q. Energy of the sun arises mainly from __________ reactions.

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Q. Which of the following fastening devices has a head at one end and a nut fitted to the other ?

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Q. Sudden fall of atmospheric pressure by a large amount is an indication of the

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Q. Annealing ofwhite cast iron produces __________ iron.

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Q. Resistance of an electrical conductor is proportional to its (where, l = length and A = cross-sectional area of the conductor)

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Q. A solar cell converts the sunlight directly into __________ energy.

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Q. If a nuclear reactor produces more fissile nuclear fuel than it consumes, then it is called a __________ reactor.

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Q. Wrought iron is never shaped by

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Q. Which one of the following is incombustible ?

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Q. The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding __________ grinding wheel is normally used.

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Q. Tin based white metals are used, where bearings are subjected to

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Q. Friction factor for fluid flow in pipe does not depend upon the

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Q. All of the following alloying elements of steel increases hardness but sacrifice ductility, except

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Q. The following type of bonding is strongly directional in solids.

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Q. Fog is an example of colloidal system of

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Q. Chromium molybdenum steel can not be welded using __________ welding.

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Q. Speisses is a mixture of the following:

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