Q. Strain hardening effect in metals subjected to cold working is due to the __________ mechanism.

View solution

Q. __________ number determines whether the fluid flow in an open channel is supercritical, critical or sub-critical.

View solution

Q. Which of the following emissions in the exhaust gas of an I.C. engine causes the formation of photochemical smog?

View solution

Q. If Reynolds number is greater than 1, then the

View solution

Q. The type of pump used for lifting large quantity of sewage is a __________ pump.

View solution

Q. Which of the following metals is not subjected to electrolytic refinning/purification?

View solution

Q. The most important function of a washer is to provide bearing area and washers are normally specified by their hole diameters. The diameter of washer as compared to the nut is

View solution

Q. The hardenability of steel decreases with

View solution

Q. Pick out the correct statement about the condensation.

View solution

Q. Change in volume of metals from absolute zero temperature to their melting points is

View solution

Q. Wohler test is a destructive test to find out the __________ strength of a prepared metal specimen.

View solution

Q. Alloy powder manufactured by the following process have spherical shapes.

View solution

Q. Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay.

View solution

Q. The product of a commercial direct reduction process is

View solution

Q. In the diving apparatus, helium is used along with oxygen, because it is

View solution

Q. Materials having resistivity ranging from 1 to 100 ohm. cm is termed as

View solution

Q. During sensible cooling of air, its wet bulb temperature

View solution

Q. The underground well of a biogas plant is called the

View solution

Q. Use of water as a manometric liquid suffers from the disadvantage of its

View solution

Q. The following thermocouple may be used for measuring temperature upto 1873°K.

View solution