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Engineering Thermodynamics

Engineering Thermodynamics
For which of the following substances, the gas laws can be used with minimum error

Wet steam
Superheated steam
Dry steam
Saturated steam

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Engineering Thermodynamics
A path 1-2-3 is given. A system absorbs 100 kJ as heat and does 60 kJ of work while along the path 1-4-3, it does 20 kJ of work. The heat absorbed during the cycle 1-4-3 is

-80 kJ
-140 kJ
+60 kJ
-40 kJ

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Engineering Thermodynamics
The temperature at which the volume of a gas becomes zero is called

Absolute temperature
Absolute zero temperature
Absolute scale of temperature
None of these

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Engineering Thermodynamics
If the value of n = 0 in the equation pvn = C, then the process is called

Adiabatic process
Isothermal process
Constant volume process
Constant pressure process

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Engineering Thermodynamics
The absolute zero temperature is taken as

273°C
-237°C
-273°C
237°C

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Engineering Thermodynamics
The absolute zero pressure will be

At sea level
At the center of the earth
At the temperature of - 273 K
When molecular momentum of the system becomes zero

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