Q. In the blast furnace, incorporation of water vapour in the blast gives the following effect.

View solution

Q. Pick out the wrong statement.

View solution

Q. The usual energy consumption in electric arc furnace steel making is __________ KWh/ton of steel.

View solution

Q. Maximum permissible air velocity in pipelines is about __________ metre/second.

View solution

Q. Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of

View solution

Q. The most economical channel section for the fluid flow is the one for which the discharge is maximum for a given cross-sectional area. Vertical velocity distribution in an open channel for laminar flow can be assumed to be

View solution

Q. Energy of the sun arises mainly from __________ reactions.

View solution

Q. Which of the following fastening devices has a head at one end and a nut fitted to the other ?

View solution

Q. Sudden fall of atmospheric pressure by a large amount is an indication of the

View solution

Q. Annealing ofwhite cast iron produces __________ iron.

View solution

Q. Resistance of an electrical conductor is proportional to its (where, l = length and A = cross-sectional area of the conductor)

View solution

Q. A solar cell converts the sunlight directly into __________ energy.

View solution

Q. If a nuclear reactor produces more fissile nuclear fuel than it consumes, then it is called a __________ reactor.

View solution

Q. Wrought iron is never shaped by

View solution

Q. Which one of the following is incombustible ?

View solution

Q. The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding __________ grinding wheel is normally used.

View solution

Q. Tin based white metals are used, where bearings are subjected to

View solution

Q. Friction factor for fluid flow in pipe does not depend upon the

View solution

Q. All of the following alloying elements of steel increases hardness but sacrifice ductility, except

View solution

Q. The following type of bonding is strongly directional in solids.

View solution