Q. Velocity of a gas in sound is not proportional to (where, T = Absolute temperature of the gas. P = Absolute pressure of the gas. y = Ratio of specific heats (Cᵨ/Cᵥ) ρ = specific weight of the gas)

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Q. A material lacking in toughness is usually termed as

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Q. The basic constituent of vegetable oils is

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Q. Latent heat of dry steam at atmospheric pressure is 539 Kcal/kg; which __________ with increase in the pressure of steam.

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Q. Which of the following terminology is used for the temperature at which new grains are formed in a metal ?

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Q. Thermit welding is categorised as the __________ welding.

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Q. A gas having a negative Joule-Thompson co-efficient, when throttled, will

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Q. Annealing of metal does not

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Q. Which of the following is a common constituent of both paint and oil varnish ?

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Q. Lithium is a useful alloying addition to aluminium, because it

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Q. Pick out the wrong statement about coating/electroplating of metals.

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Q. In case of a, centrifugal pump, the ratio h1/H2 is termed as the __________ efficiency (where, h1 = actual measured head & H2 = head imparted to the fluid by impeller).

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Q. Brinell hardness number (BHN) of a material is a number, which has

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Q. Vanadium addition to steel improves its

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Q. Tin is not present as an alloying element in

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Q. Thermit welding uses the following energy source.

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Q. The friction factor for the turbulent fluid flow in a rough pipe does not depend upon the

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Q. Flue gases pass through the following boiler accessories in a high pressure natural circulation boiler.

A. Induced draft fan
B. Economiser
C. Air preheater
D. Steam superheater

Which of the following gives the correct sequence of flow of the flue gases through the above mentioned boiler accessories ?

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Q. Case hardening of a material is

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Q. Titanium is added to molten aluminium alloys before casting for the purpose of

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