The network output of a heat engine is always

• Less than the amount of heat input

• More than the amount of heat input

• None of these

• More or less than the amount of heat input

A process will not occur

• It satisfies the first and second law of thermodynamics

• It satisfies the zeroth law

• None of these

• It satisfies the second and third law of thermodynamics

The entropy system for adiabatic process is

• Zero

• Maximum

• None of these

• One

The process that causes a process to be irreversible process is

• Irreversible

• Reversible

• Activities

• None of these

The ____ is the ratio of compressor work input to the turbine output work

• Work ratio

• Heat ratio

• Specific heat ratio

• Energy ratio

The working fluid used in refrigeration system cycle is called

• Refrigerant

• Medium

• Heat

• None of these

In stirling the heat is added during

• Isothermal process

• Isobaric process

• Isentropic process

• Heat process

When the entire heat exchanger is selected as control volume, heat becomes

• Zero

• Maximum

• Infinity

• None of these

Used to measure the performance of an engine

• Effieicency

• COP

• Effectiveness

• Ratio

The greatest net work output per cycle in Stirling cycle is obtained with the smallest pressure ratio across the turbine; the greatest volumetric expansion ratio and operating at the highest temperature at

• Turbine inlet

• Turbine outlet

• Reheater inlet

• Reheater outlet