1
GATE ME 1996
MCQ (Single Correct Answer)
+2
-0.6
For a current carrying wire of $$20$$ $$mm$$ diameter and having $$k=0.5W/mK$$ is exposed to air $$\left( {h = 20W/{m^2}K} \right),$$ maximum heat dissiption occurs when thickness of insulation is
A
$$30$$ $$mm$$
B
$$25$$ $$mm$$
C
$$20$$ $$mm$$
D
$$15$$ $$mm$$
2
GATE ME 1991
Subjective
+2
-0
Match the property with their units

Property
$$A.$$ Bulk modulus
$$B.$$ Thermal conductivity
$$C.$$ Heat transfer coefficient
$$D.$$ Heart flow rate

Units
$$1.$$ $$W/s$$
$$2.$$ $$N/{m^2}$$
$$3.$$ $$N/{m^3}$$
$$4.$$ $$W$$
$$5.$$ $$W/mK$$
$$6.$$ $$W/{m^2}K$$

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