Q. Grinding wheel made of silicon carbide is most suitable for grinding materials of low tensile strength (e.g; tough bronze). Grinding is a __________ operation.

View solution

Q. Which of the following is the most effective inhibitor of grain growth, when added in small quantity in steel ?

View solution

Q. A controller action in which there is a con-tinous relation between the values of controlled variable and the rate of change of conrolled output signal is called the __________ action.

View solution

Q. An ideal fluid is

View solution

Q. Which of the following is not found in iron-carbon equilibrium diagram ?

View solution

Q. Which of the following metals can not be extracted by pyrometallurgical process from its sulphide ore?

View solution

Q. Nitrogen compounds are not used in the manufacture of

View solution

Q. Stellite is a trade name for the

View solution

Q. Needles are produced by

View solution

Q. High __________ of cast iron makes it suitable for use in machine beds.

View solution

Q. Which of the following alloying elements reduces the formation of iron sulphide in steel ?

View solution

Q. In age-hardenable alloys, maximum ductility is obtained

View solution

Q. Prandtl mixing length in turbulent flow signifies the

View solution

Q. Magnesium addition to cast iron increases its

View solution

Q. Aromatics are desired constituents of

View solution

Q. Galvanic corrosion

View solution

Q. Increasing the temperature of a material makes it

View solution

Q. Which of the following absorbs maximum heat in a high pressure boiler ?

View solution

Q. The laminar boundary layer thickness in zero pressure gradient flow over a flat plate along the x-direction varies as x^0.5 while the thickness of turbulent boundary layer varies as (where, x = distance from the leading edge)

View solution

Q. Which of the following is capable of acting both as an acid flux as well as a basic flux in the metal extraction from its ore ?

View solution