A fin will be necessary and effective only when _____ – McqOptions

MCQOPTIONS

1.	A fin will be necessary and effective only when _____
A.	k is small and h is large
B.	k is large and h is also large
C.	k is small and h is also small
D.	k is large and h is small
Answer» E.

Discussion

No Comment Found

Related MCQs

A fin will be necessary and effective only when _____
Which one of the following configuration has the highest fin effectiveness?
An increase in pin fin effectiveness is caused by high value of _________
Three fins of equal length and diameter but made of aluminum, brass and cast iron are heated to 2000C at one end. If the fins dissipate heat to the surrounding air is 250C the temperature at the end will be least in case of ______
Extended surface are used to increase the rate of heat transfer. When the convective heat transfer coefficient h=mk, the addition of extended surface will:
On heat transfer surface, fins are provided?
A fin length l, protrudes from a surface held at temperature T<sub>0</sub>; it being higher than the ambient temperature T<sub>a</sub>. The heat dissipation from the free end of the fin is stated to be negligibly small. What is the temperature gradient (dT/dx)<sub>x=l</sub> at the tip of the fin?
The insulated tip temperature of a rectangular longitudinal fin having an excess (over ambient) root temperature of <sub>0</sub>is _____
Addition of fin to the surface increases the heat transfer if ( sqrt{hA/kP} ) is __________
Which the following statements pertaining to heat transfer through fins?