421. The concept of regeneration is used in following cycles
A.Rankine and Stirling
B.Rankine and Ericsson
C.Stirling and Ericsson
D.Stirling and Brayton

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422. A Bell-Coleman cycle is a reversed
A.Carnot cycle
B.Otto cycle
C.Joule cycle
D.Stirling cycle

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423. Ericsson cycle consists of the following four processes
A.Two isothermals and two isentropics
B.Two isothermals and two constant volumes
C.Two isothermals and two constant pressures
D.two adiabatics and two constant pressures

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424. A petrol engine theoretically operates on
A.Constant pressure cycle
B.Constant volume cycle
C.Constant temperature cycle
D.Constant entropy cycle

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425. A diesel engine theoretically operates on
A.Constant pressure cycle
B.Constant volume cycle
C.Constant temperature cycle
D.Constant entropy cycle

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426. A high speed diesel engine theoretically operates on
A.Constant pressure cycle
B.Mixed cycle of constant pressure and constant volume.
C.Constant temperature cycle
D.Constant entropy cycle

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427. The constant pressure gas turbine works on the
A.Rankine cycle
B.Brayton cycle
C.Carnot cycle
D.Dual cycle

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