1
GATE ME 2014 Set 4
Numerical
+2
-0
A plane wall has a thermal conductivity of $$1.15$$ $$W/m.K.$$ If the inner surface is at $${1100^ \circ }C$$ and the outer surface is at $${350^ \circ }C$$, then the design thickness (in meter) of the wall to maintain a steady heat flux of $$2500\,\,W/{m^2}$$ should be ____________.
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2
GATE ME 2014 Set 2
Numerical
+2
-0
A material $$P$$ of thickness $$1$$ $$mm$$ is sandwiched between two steel slabs, as shown in the figure below. $$A$$ heat flux $$10\,kW/{m^2}$$ is supplied to one of the steel slabs as shown. The boundary temperatures of the slabs are indicated in the figure. Assume thermal conductivity of this steel is $$10W/m.K.$$. Considering one-dimensional steady state heat conduction for the configuration, the thermal conductivity ($$k$$, in $$W/m.K$$) of material $$P$$ is _____________ GATE ME 2014 Set 2 Heat Transfer - Conduction Question 14 English
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3
GATE ME 2014 Set 3
Numerical
+2
-0
Heat transfer through a composite wall is shown in figure. Both the sections of the wall have equal thickness $$\left( \ell \right)$$. The conductivity of one section is $$k$$ and that of the other is $$2k.$$ The left face of the wall is at $$600$$ $$K$$ and the right face is at $$300$$ $$K.$$ GATE ME 2014 Set 3 Heat Transfer - Conduction Question 11 English

The interface temperature $${T_i}$$ (in $$K$$) of the composite wall is ___________

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4
GATE ME 2009
MCQ (Single Correct Answer)
+2
-0.6
Consider steady-state heat conduction across the thickness in a plane composite wall as shown in fig exposed to convection conditions on both sides. GATE ME 2009 Heat Transfer - Conduction Question 15 English 1 GATE ME 2009 Heat Transfer - Conduction Question 15 English 2

Assuming negligible contact resistance between the wall surfaces, the interface temp $$T(C)$$ of the two walls will be

A
$$-0.50$$
B
$$2.75$$
C
$$3.75$$
D
$$4.5$$
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