Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

(C.O.P.)_P = (C.O.P.)_R + 2

(C.O.P.)_P = (C.O.P.)_R + 1

(C.O.P)_P = (C.O.P)_R - 1

(C.O.P)_P = (C.O.P)_R

Correct

Incorrect

Agree

Disagree

Grashoff number

Biot number

Stanton number

Prandtl number

the total radiation from a black body per second per unit area is directly proportional to the fourth power of the absolute temperature

the wave length corresponding to the maximum energy is proportional to the absolute temperature

the ratio of the emissive power and absorptive power of all bodies is the same and is equal to the emissive power of a perfectly black body

none of the above