| 1. | When the gas is cooled at constant pressure ? | |
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its temperature increases but volume decreases
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its volume increases but temperature decreases
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both temperature and volume increases
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both temperature and volume decreases
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Report Question| 2. | Carnot cycle has maximum efficiency for ? | |
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petrol engine
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diesel engine
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reversible engine
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irreversible engine
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| 3. | An open cycle gas turbine works on ? | |
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Carnot cycle
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Otto cycle
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Joule's cycle
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Stirling cycle
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| 4. | One molecule of oxygen consists of ...... atoms of oxygen ? | |
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2
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4
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8
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16
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| 5. | A process, in which the working substance neither receives nor gives out heat to its surroundings during its expansion or compression, is called ? | |
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isothermal process
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hyperbolic process
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adiabatic process
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polytropic process
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| 6. | One molecule of oxygen is .............. times heavier than the hydrogen atom ? | |
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12
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14
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16
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32
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| 7. | In an isothermal process ? | |
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there is no change in temperature
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there is no change in enthalpy
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there is no change in internal energy
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all of these
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| 8. | The isothermal and adiabatic processes are regarded as ? | |
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reversible process
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irreversible process
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reversible or irreversible process
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none of these
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| 9. | Carnot cycle consists of ? | |
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two constant volume and two isentropic processes
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two isothermal and two isentropic processes
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two constant pressure and two isentropic processes
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one constant volume, one constant pressure and two isentropic processes
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| 10. | The gas in cooling chamber of a closed cycle gas turbine is cooled at ? | |
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constant volume
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constant temperature
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constant pressure
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none of these
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