Engineering Thermodynamics
Brayton cycle consists' of following four processes

Two isentropic, one constant volume and one constant pressure
Two isentropic and two constant volumes
Two isentropic and two constant pressures
Two isothermal and two isentropic

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Engineering Thermodynamics
Otto cycle consists of

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

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Engineering Thermodynamics
Mond gas is obtained by

Passing steam over incandescent coke
Carbonisation of bituminous coal
Partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast
Passing air and a large amount of steam over waste coal at about 650°C

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