Question:-
Consider the following statements:
If a surface is pock-marked with a number of cavities, then as compared to a smooth surface
1. Radiation will increase
2. Nucleate boiling will increase
3. Conduction will increase
4. Convection will increase
Of these statements
Option (A)
1, 2, and 3 are correct
Option (B)
1, 2 and 4 are correct
Option(C)
1, 3 and 4 are correct
Option(D)
2, 3 and 4 are correct
Correct Option:
(B)
Question Solution:
Radiation will increase q’aA, surface convection will increase q’aA, surface nucleate boiling will in crease as pocket will be the favorable sites for onset of nucleation
question-answer-faq-3075