1
GATE ME 1996
MCQ (Single Correct Answer)
+1
-0.3
For a given heat flow and for the same thickness, the temp drop across the material will be maximum for
A
Copper
B
Steel
C
Glass wool
D
Refractory brick
2
GATE ME 1994
MCQ (Single Correct Answer)
+1
-0.3
Two insulting materials of thermal conductivity $$K$$ and $$2K$$ are available for lagging a pipe carrying a hot fluid. If the radial thickness of each material is same
A
Material with higher thermal conductivity should be used for inner layer and one with lower thermal conductivity for the outer.
B
Material with lower thermal conductivity should be used for the inner layer and one with higher thermal conductivity for the outer.
C
It is immaterial in which sequence the insulating materials are used
D
It is not possible to judge unless numerical values of dimensions are given
3
GATE ME 1990
MCQ (Single Correct Answer)
+1
-0.3
Thermal conductivity is lower for
A
wood
B
air
C
water at $${100^ \circ }C$$
D
steam at $$1$$ bar
GATE ME Subjects
Turbo Machinery
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
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CBSE
Class 12