Engineering Thermodynamics
Boyle's law i.e. pV = constant is applicable to gases under

Steady change of pressures
High range of pressures
Only small range of pressures
All ranges of pressures

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Engineering Thermodynamics
The efficiency of a gas turbine is given by

(Net work output)/(Heat supplied)
(Net work output)/(Work-done by the turbine)
(Actual temperature drop)/(Isentropic temperature drop)
(Isentropic increase in temperature)/(Actual increase in temperature)

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Engineering Thermodynamics
Stirling cycle consists of

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

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