1
GATE ME 1993
Subjective
+2
-0
A rigid insulated cylinder has two compartments separated by a thin membrane. While one compartment contains one kmol nitrogen at a certain pressure and temperature, the other contains one kmol carbon dioxide at the same pressure and temperature. The membrane is ruptured and the two gases are allowed to mix.
Assume that the gases behave as ideal gases. Calculate the increase in entropy of the contents of the cylinder. Universal gas constant equal to $$8314.3$$ $$J/kmol$$ $$K.$$
2
GATE ME 1993
Subjective
+2
-0
A vertical cylinder with a freely floating piston contains $$0.1$$ $$kg$$ air at $$1.2$$ bar and a small electrical resistor. The resistor is wired to an external $$12$$ Volt battery. When a current of $$1.5$$ amps is passed through the resistor for $$90$$ $$secs,$$ the piston sweeps a volume of $$0.01$$ $${m^3}.$$ Assume $$(i)$$ piston and the cylinder are insulated and $$(ii)$$ air behaves as a ideal gas with $${C_v} = 700\,\,J/kg\,K.$$
Find the rise in temperature of air.
Find the rise in temperature of air.
3
GATE ME 1993
MCQ (Single Correct Answer)
+1
-0.3
A reversible heat transfer demands:
4
GATE ME 1993
MCQ (Single Correct Answer)
+2
-0.6
Round the clock cooling of an apartment having a load of $$300$$ $$MJ/day$$ requires and air-conditioning plant of capacity about
Paper analysis
Total Questions
Engineering Mathematics
7
Engineering Mechanics
1
Fluid Mechanics
5
Heat Transfer
2
Industrial Engineering
1
Machine Design
2
Production Engineering
6
Strength of Materials
5
Theory of Machines
1
Thermodynamics
17
Turbo Machinery
2
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