Correct answer
A. All A., B. and C.
Explanation
The correct answer is All A., B. and C..
Artificial draught produced by a fan in the furnace can be controlled by the________?
A 10 cm dia steam pipe, carrying steam at 180°C, is covered with an insulation (conductivity = 0.6 W/m.°C). It losses heat to the surroundings at 30°C. Assume a heat transfer co-efficient of 0.8 W/m2.°C for heat transfer from surface to the surroundings. Neglect wall resistance of the pipe and film resistance of steam. If the insulation thickness is 2 cms, the rate of heat loss from this insulated pipe will be________?
Which has the lowest Prandtl number?
What is the overall transfer function (C/R) of the following block diagram if G = G1. G2. G3 and H = H1.H2?
Transportation of 35% oleum during winter suffers from the problem of freezing, which can be overcome by the addition of small quantity of________?
Solvent used in duo-sol extraction for lube oil upgradation is a mixture of________?