1
GATE ME 2015 Set 2
MCQ (Single Correct Answer)
+1
-0.3
Within a boundary layer for a steady incompressible flow, the Bernoulli equation
A
holds because the flow is steady
B
holds because the flow is incompressible
C
holds because the flow is transitional
D
does not hold because the flow is frictional
2
GATE ME 2015 Set 2
Numerical
+1
-0
If a foam insulation is added to a $$4cm$$ outer diameter pipe as shown as figure, the critical radius of insulation (in $$cm$$) is ________. GATE ME 2015 Set 2 Heat Transfer - Conduction Question 31 English
Your input ____
3
GATE ME 2015 Set 2
MCQ (Single Correct Answer)
+2
-0.6
A cylindrical uranium fuel rod of radius 5 mm in a nuclear reactor is generating heat at the rate of $$4 \times {10^7}\,\,W/{m^3}.$$ The rod is cooled by a liquid (convective heat transfer coefficient $$1000W/{m^2}$$-$$K$$) at $${25^ \circ }C$$. At steady state, the surface temperature (in $$K$$) of the rod is
A
$$308$$
B
$$398$$
C
$$418$$
D
$$448$$
4
GATE ME 2015 Set 2
MCQ (Single Correct Answer)
+1
-0.3
In the laminar flow of air $$(Pr=0.7)$$ over a heated plate, if $$\delta $$ and $${\delta _T}$$ denote, respectively the hydrodynamic and thermal boundary layer thickness, then
A
$$\delta = {\delta _t}$$
B
$$\delta > {\delta _t}$$
C
$$\delta < {\delta _t}$$
D
$$\delta = 0$$ but $${\delta _t} \ne 0$$
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