145) The ideal efficiency of a Brayton cycle without regeneration with increase ni pressure ratio will

increase

decrease

remain unchanged

increase/decrease depending on application

Answer is:

increase

Engineering Thermodynamics MCQ with Answers

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146) The ideal efficiency of a Brayton cycle with regeneration, with increase in pressure ratio will

increase

decrease

remain unchanged

increase/decrease depending on ap-plication

Answer is:

decrease

147) The following cycle is used for air craft refrigeration

Brayton cycle

Reversed-Brayton cycle.

Carnot cycle

Bell-Coleman cycle

Answer is:

Reversed-Brayton cycle.

148) Gas turbine cycle consists of

two isothermals and two isentropics

two isentropics and two constant volumes

two isentropics, one constant volume and one constant pressure

two isentropics and two constant pressures

Answer is:

two isentropics and two constant pressures

149) The thermodynamic difference between a Rankine cycle working with saturated steam and the Carnot cycle is that

carnot cycle can′t work with saturated steam

heat is supplied to water at temperature below the maximum temperature of the cycle

a rankine cycle receives heat at two places

rankine cycle is hypothetical

Answer is:

heat is supplied to water at temperature below the maximum temperature of the cycle

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145) The ideal efficiency of a Brayton cycle without regeneration with increase ni pressure ratio will

increase

Engineering Thermodynamics MCQ with Answers

Related Engineering Thermodynamics MCQ with Answers

146) The ideal efficiency of a Brayton cycle with regeneration, with increase in pressure ratio will

decrease

147) The following cycle is used for air craft refrigeration

Reversed-Brayton cycle.

148) Gas turbine cycle consists of

two isentropics and two constant pressures

149) The thermodynamic difference between a Rankine cycle working with saturated steam and the Carnot cycle is that

heat is supplied to water at temperature below the maximum temperature of the cycle

Engineering Thermodynamics MCQ with Answers