Engineering Thermodynamics
Otto cycle is also known as

Constant temperature and pressure cycle
Constant volume cycle
Constant pressure cycle
Constant temperature cycle

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Engineering Thermodynamics
The universal gas constant (or molar constant) of a gas is the product of

Molecular mass of the gas and the gas constant
Molecular mass of the gas and the specific heat at constant volume
Atomic mass of the gas and the gas constant
Molecular mass of the gas and the specific heat at constant pressure

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