1
GATE ME 2002
MCQ (Single Correct Answer)
+1
-0.3
The value of Biot number is very small (less than $$0.1$$), when
A
The convective resistance of the fluid is negligible
B
The conductive resistance of the fluid is negligible
C
The conductive resistance of the solid is negligible
D
None of these
2
GATE ME 2001
MCQ (Single Correct Answer)
+1
-0.3
Lumped heat transfer analysis of a solid object suddenly exposed to a fluid medium at a different temp is valid when.
A
Biot number $$< 0.1$$
B
Biot number $$> 0.1$$
C
Fourier number $$< 0.1$$
D
Fourier number $$> 0.1$$
3
GATE ME 1994
True or False
+1
-0
When the fluid velocity is doubled the thermal time constant of a thermometer used for measuring the fluid temperature reduces by a factor of $$2$$
A
TRUE
B
FALSE
4
GATE ME 1991
MCQ (Single Correct Answer)
+1
-0.3
Biot number signifies
A
The ratio of heat conducted to heat converted
B
The ratio of heat convected to heat conducted
C
The ratio of external convective resistance to internal conductive resistance
D
The ratio of internal conductive resistance to external convective resistance
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Turbo Machinery
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