1
GATE ME 2011
MCQ (Single Correct Answer)
+2
-0.6
The temperature and pressure of air in a large reservoir are $$400$$ $$K$$ and $$3$$ bar respectively. A converging diverging nozzle of exit area $$0.005{m^2}$$ is fitted to the wall of the reservoir as shown in the figure. The static pressure of air at the exit section for isentropic flow through the nozzle is $$50$$ $$kPa.$$ The characteristic gas constant and the ratio of specific heats of air are $$0.287$$ $$kJ/kgK$$ and $$1.4$$ respectively.
![GATE ME 2011 Thermodynamics - First Law of Thermodynamics Question 19 English](https://imagex.cdn.examgoal.net/FG8hH8ullaQKMBRyW/QRlP8gt8IG5JPUa0J9YOM1Ka6YBoZ/v2Tlk0Ct9337724Y2jXygD/uploadfile.jpg)
The density of air in $$kg/{m^3}$$ at the nozzle exit is
2
GATE ME 2011
MCQ (Single Correct Answer)
+2
-0.6
The temperature and pressure of air in a large reservoir are $$400$$ $$K$$ and $$3$$ bar respectively. A converging diverging nozzle of exit area $$0.005{m^2}$$ is fitted to the wall of the reservoir as shown in the figure. The static pressure of air at the exit section for isentropic flow through the nozzle is $$50$$ $$kPa.$$ The characteristic gas constant and the ratio of specific heats of air are $$0.287$$ $$kJ/kgK$$ and $$1.4$$ respectively.
![GATE ME 2011 Thermodynamics - First Law of Thermodynamics Question 18 English](https://imagex.cdn.examgoal.net/FG8hH8ullaQKMBRyW/QRlP8gt8IG5JPUa0J9YOM1Ka6YBoZ/v2Tlk0Ct9337724Y2jXygD/uploadfile.jpg)
The mass flow rate of air through the nozzle in $$kg/s$$ is
3
GATE ME 2008
MCQ (Single Correct Answer)
+2
-0.6
A balloon containing an ideal gas is initially kept in an evacuated and insulated room. The balloon ruptures and the gas fills up the entire room. Which one of the following statements is TRUE at the end of above process?
4
GATE ME 2008
MCQ (Single Correct Answer)
+2
-0.6
A rigid, insulated tank is initially evacuated. The tank is connected with a supply line through which air ( assumed to be ideal gas with constant specific heats) passes at $$1$$ $$MPa,$$ $${350^ \circ }C.$$ A valve connected with the supply line is opened and the tank is charged with air until the final pressure inside the tank reaches $$1$$ $$MPa.$$ The final temperature inside the tank.
Questions Asked from First Law of Thermodynamics (Marks 2)
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GATE ME 2023 (2)
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GATE ME Subjects
Engineering Mechanics
Machine Design
Strength of Materials
Heat Transfer
Production Engineering
Industrial Engineering
Turbo Machinery
Theory of Machines
Engineering Mathematics
Fluid Mechanics
Thermodynamics
General Aptitude