Q. Coke is added in the blast furnace to

View solution

Q. A balanced draught boiler furnace employs __________ draught fan.

View solution

Q. Aluminium oxide (an abrasive) is used for grinding

View solution

Q. In a casting, cold shut defect is caused by

View solution

Q. Even minute presence of impurities in copper impairs its electrical conductivity seriously. Electrolytic refinning of blister copper is resorted to, when

View solution

Q. Lead is most readily dissolved in

View solution

Q. Which of the following is a synthetic abrasive ?

View solution

Q. Dezincification is a form of corrosion, which specifically applies to

View solution

Q. Water hammer in pipelines results, when the flowing fluid

View solution

Q. The preferred alloying element for low temperature applications of steel is

View solution

Q. Production of one ton of steel plate in a modern integrated steel plant in India consumes about __________ kWh of electricity.

View solution

Q. Ceramic tips for the cutting tool are prepared from __________ powder.

View solution

Q. Fatigue strength of a metal is improved by

View solution

Q. Saturated steam at a pressure of 25 kg/cm² is throttled to attain 5 kg/cm² . Then the outcoming steam will be

View solution

Q. An "orange peel" effect is observed

View solution

Q. Which of the following is a boiler accessory i.e., not a boiler mounting ?

View solution

Q. Which of the following forces does not act on a fluid at rest ?

View solution

Q. Density in the solid state is slightly less than that in its liquid state, in case of

View solution

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