| 1. | What is the ratio W/Q (W= work transfer from cycle, Q = heat transfer to the cycle) known as ? | |
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Air standard efficiency
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Specific consumption
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Specific work transfer
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Work ratio
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Report Question| 2. | What processes does Carnot cycle consist of ? | |
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Two isothermal and two adiabatic processes
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Two isothermal and two constant volume processes
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Two isothermal and two constant pressure processes
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Two constant pressure and two constant volume processes
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| 3. | What is the temperature at which a system goes under a reversible isothermal process without heat transfer ? | |
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Absolute zero temperature
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Critical temperature
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Reversible temperature
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Boiling temperature
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| 4. | How is the thermal efficiency of an I.C engine related to compression ratio ? | |
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Increase
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Decrease
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May increase or decrease
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Remains same
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| 5. | All the processes in an air standard cycle are assumed to be ________ ? | |
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adiabatic
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irreversible
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isothermal
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reversible
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| 6. | Water flows through a turbine in which due to friction there is a temperature rise from 30°C to 35°C. If there is no heat transfer taking place during the process. What is the change in the entropy of water ? | |
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0.077
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0.079
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0.406
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0.496
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| 7. | In 18-4-11 HSS (high speed steel) the percentage of chromium is ? | |
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1%
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4%
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18%
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20%
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| 8. | The pH value of neutral solution is ? | |
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Equal to 7
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Less than 7
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Greater than 7
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None of these
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| 9. | _______ is better suited for lighter duty bearings ? | |
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Phosphor Bronze
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Plastics
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White metal
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Monel metal
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| 10. | _______ is not the neutral refractory material ? | |
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Graphite
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Karnelite
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Chromite
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Dolomite
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