Explore topic-wise MCQs in Heat Transfer.

This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Heat Transfer knowledge and support exam preparation. Choose a topic below to get started.

1.

For inclined plates we multiply Grashoff number with

A. Cos 2
B. Sin 2
C. Sin
D. Cos
Answer» E.
Discussion
2.

The free convection coefficient is given by
h = C 1 d t m/l 1 3m

A. nThe value of exponent for laminar flow is
B. 0.5
C. 0.6
D. 0.7
E. 0.8
Answer» B. 0.5
Discussion
3.

A nuclear reactor with its core constructed of parallel vertical plates 2.25 m high and 1.5 m wide has been designed on free convection heating of liquid bismuth. Metallurgical considerations limit the maximum surface temperature of the plate to 975 degree Celsius and the lowest allowable temperature of bismuth is 325 degree Celsius. Estimate the maximum possible heat dissipation from both sides of each plate. The appropriate correlation for the convection coefficient is
Nu = 0.13 (Gr Pr) 1/3

A. 143 MW
B. 153 MW
C. 163 MW
D. 173 MV
Answer» C. 163 MW
Discussion
4.

For laminar flow over a flat plate, the average value of a Nusselt number is prescribed by the relation
Nu = 0.664 (Re) 0.5 (Pr) 0.33

A. nWhich of the following is then a false statement?
B. Density has to be increased four times
C. Plate length has to be decreased four times
D. Specific heat has to be increased four times
E. Dynamic viscosity has to be decreased sixteen times
Answer» E. Dynamic viscosity has to be decreased sixteen times
Discussion