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Engineering Thermodynamics

Engineering Thermodynamics
Work done in a free expansion process is

Zero
Minimum
Maximum
Positive

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Engineering Thermodynamics
The condition of perfect vacuum, i.e., absolute zero pressure can be attained at

A temperature of 273 °K
A temperature of - 273.16°C
A negative pressure and 0°C temperature
A temperature of 0°C

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Engineering Thermodynamics
If a fluid expands suddenly into vacuum through an orifice of large dimension, then such a process is called

Parabolic expansion
Free expansion
Hyperbolic expansion
Adiabatic expansion

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Engineering Thermodynamics
An adiabatic process is one in which

The change in internal energy is equal to the mechanical work done
No heat enters or leaves the gas
The temperature of the gas changes
All of these

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Engineering Thermodynamics
The following cycle is used for air craft refrigeration

Joule cycle
Brayton cycle
Carnot cycle
Reversed Brayton cycle

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Engineering Thermodynamics
Diesel cycle consists of __________ processes.

Two constant volume and two isentropic
One constant pressure, one constant volume and two isentropic
Two constant volume and two isothermal
Two constant pressure and two isentropic

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