Radiation energy is emitted by all the substances, which are above____________________?

Related Mcqs:

Fouling factor for a heat exchanger is given by (where, U1 = heat transfer co-efficient of dirty surface U2 = heat transfer co-efficient of clean surface) ?

A. U1 – U2 B. 1/U1 – 1/U2 C. 1/U2 – 1/U1 D. U2 – U1...

Fresh orange juice contains 12% (by weight) solids and the rest water 90% of the fresh juice is sent to an evaporator to remove water and subsequently mixed with the remaining 10% of fresh juice. The resultant product contains 40% solids. The kg of water removed from 1 kg fresh juice is__________________?

A. 0.4 B. 0.5 C. 0.6 D. 0.7...

Overall heat transfer co-efficient of a particular tube is U1. If the same tube with some dirt deposited on either side has coefficient U2, then_________________?

A. U1 = U2 B. U2 > U1 C. U1 > U2 D. U1 = dirt factor – U2...

In case of a multipass shell and tube heat exchanger, the temperature drop in the fluid _______________?

A. Is inversely proportional to the resistance across which the drop occurs B. And the wall are proportional to individual resistances C. And the wall is not related D. None of these...

Prandtl number is given by__________________?

A. CP μ/a B. hD/k C. CP μ/k D. μ/h CP...