Q. In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the

View solution

Q. Which of the following is the most elastic material ?

View solution

Q. The 'laughing gas' is

View solution

Q. Notched bar test is used for testing the __________ of a material.

View solution

Q. The most suitable material for die casting is

View solution

Q. Heating of an ore below its melting point in presence of excess of air is called

View solution

Q. Depreciation of machines fails under the indirect expenses head. As per income tax regulations, it is calculated by the __________ method.

View solution

Q. A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through it, because it heats up the crystals & breaks the covalant bonds resulting in __________ electrons.

View solution

Q. Out of the following substances, one ton of __________ will store the maximum heat for a rise of 30°C in temperature.

View solution

Q. In which of the following reactions, application of vacuum will help ?

View solution

Q. Inspection of surface and sub-surface cracks in non-magnetic alloys is done by __________ testing method.

View solution

Q. Pick out the wrong statement.

View solution

Q. Which of the following exemplifies resemblence with the extrusion process ?

View solution

Q. The routing function in a production system design is concerned with the

View solution

Q. Filler material used in welding having the lowest melting point out of the following is

View solution

Q. Which of the following has the highest density and the lowest melting point ?

View solution

Q. Electrolytes conduct electric current by

View solution

Q. To improve the machinability of steel by its softening, it is subjected to

View solution

Q. A material expanding freely due to heating will develop __________ stress.

View solution

Q. A machine having assumed life of 20 years is purchased for Rs 32000/-. Its scrap value at the end of its life is Rs 8000/-. If the depreciation is calculated by diminishing balance method, then percentage reduction in its value at the end of first year is __________ percent.

View solution