Transmission Of Heat Question 332

Question: Direction: In the following questions, more than one of one answers given are correct. Select the correct answers and mark it according to the following codes:

The rate of loss of heat from a body cooling under conditions of forced convection is proportional to its (1) surface area (2) excess of temperature over that of surrounding (3) heat capacity (4) absolute temperature Codes:

Options:

A) 1, 2 and 3 are correct

B) 1 and 2 are correct

C) 2 and 4 are correct

D) 1 and 3 are correct

Show Answer

Answer:

Correct Answer: A

Solution:

[a] In forced convection rate of loss of heat $ \frac{Q}{T}\propto A( T-T _{0} ) $