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 2002
MCQ (Single Correct Answer)
+2
-0.6
The properties of mercury at $$300K$$ are : density $$ = 13529kg/{m^3},$$ $${C_P} = 0.1393$$ $$kJ/kgK,$$ dynimic viscosity $$ = 0.1523\,\, \times \,\,{10^{ - 2}}\,\,N - s/{m^2}$$ and thermal conductivity $$=8.540$$ $$W/m$$-$$K$$. The Prandtl number of the mercury at $$300K$$ is
A
$$0.0248$$
B
$$2.48$$
C
$$24.8$$
D
$$248$$
3
GATE ME 2002
MCQ (Single Correct Answer)
+2
-0.6
What is the value of the view factor for two inclined flat plates having common edge of equal width, and with an angle of $$20$$ degrees?
A
$$0.83$$
B
$$1.17$$
C
$$0.66$$
D
$$1.34$$
4
GATE ME 2002
MCQ (Single Correct Answer)
+1
-0.3
For the same inlet and outlet temperatures of hot and cold fluids, the Log mean temperature Difference $$(LMTD)$$ is
A
greater for parallel flow heat exchanger than for counter flow heat exchanger.
B
greater for counter flow heat exchanger than for parallel flow heat exchanger.
C
same for both parallel and counter flow heat exchangers.
D
dependent on the properties of the fluids.
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