1
GATE ME 2008
MCQ (Single Correct Answer)
+2
-0.6
For the three dimensional object shown in the fig below. Five faces are insulated. The sixth face $$(PQRS),$$ which is not insulted, interacts thermally with the ambient , with a convective heat transfer coefficient of $$10W/{m^2}K.$$ The ambient temperature is $${30^ \circ }C$$. Heat is uniformly generated inside the object at the rate of $$100W/{m^3}.$$ Assuming the face $$PQRS$$ to be at uniform temperature, its steady state temp is GATE ME 2008 Heat Transfer - Conduction Question 19 English
A
$$10C$$
B
$$20C$$
C
$$30C$$
D
$$40C$$
2
GATE ME 2008
MCQ (Single Correct Answer)
+2
-0.6
Steady two dimensional heat conduction takes place in the body shown in the fig below. The normal temperature gradients over surface $$P$$ and $$Q$$ can be considered to be uniform. The temperature gradient $$\partial T/\partial x = $$ at surface $$Q$$ is equal to $$10$$ $$K/m.$$ surfaces $$P$$ and $$Q$$ are maintained at constant temperatures as shown in the fig. While the remaining part of the boundary is insulated . The body has a constant thermal conductivity of $$0.1$$ $$W/mk$$, the value of $$\partial T/\partial x$$ and $$\partial T/\partial y$$ at surface $$P$$ are GATE ME 2008 Heat Transfer - Conduction Question 18 English
A
$$\partial T/\partial x = 20\,K/m,\,\,\,\partial T/\partial y = 0\,K/m$$
B
$$\partial T/\partial x = 0\,K/m,\,\,\,\partial T/\partial y = 10\,K/m$$
C
$$\partial T/\partial x = 10\,K/m,\,\,\,\partial T/\partial y = 10\,K/m$$
D
$$\partial T/\partial x = 0\,K/m,\,\,\,\partial T/\partial y = 20\,K/m$$
3
GATE ME 2007
MCQ (Single Correct Answer)
+2
-0.6
Consider steady one-dimensional heat flow in a plate of $$20mm$$ thickness with a uniform heat generation of $$80MW/{m^3}.$$ The left and right faces are kept at constant temperatures of $${160^0}C$$ and $${120^0}C$$ respectively. The plate has a constant thermal conductivity of $$200W/mK.$$

The location of maximum temp within the plate from left face is

A
$$15mm$$
B
$$10mm$$
C
$$5mm$$
D
$$0mm$$
4
GATE ME 2007
MCQ (Single Correct Answer)
+2
-0.6
Consider steady one-dimensional heat flow in a plate of $$20mm$$ thickness with a uniform heat generation of $$80MW/{m^3}.$$ The left and right faces are kept at constant temperatures of $${160^0}C$$ and $${120^0}C$$ respectively. The plate has a constant thermal conductivity of $$200W/mK.$$

The minimum temp within the plate in degree $$C$$ is

A
$$160$$
B
$$165$$
C
$$175$$
D
$$250$$
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