| 1. | The ratio of the workdone on the blades to the energy supplied to the blades, is called ? | |
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blading efficiency
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nozzle efficiency
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gross or stage efficiency
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mechanical efficiency
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Report Question| 2. | The difference of supersaturated temperature and saturation temperature at that pressure is called ? | |
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degree of supersaturation
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degree of superheat
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degree of undercooling
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none of these
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| 3. | The impulse reaction turbine has its driving force ? | |
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as an impulsive force
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as a reaction force
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partly as an impulsive force and partly as a reaction force
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none of the above
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| 4. | The supersaturated flow of steam through a nozzle as compared to a stable flow, the available heat drop ? | |
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remains the same
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increases
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decreases
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is unpredictable
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| 5. | Rateau turbine is ? | |
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simple reaction turbine
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velocity compounded turbine
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pressure compounded turbine
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pressure-velocity compounded turbine
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| 6. | The expansion of steam in a nozzle follows ? | |
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Carnot cycle
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Rankine cycle
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Joule cycle
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Stirling cycle
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| 7. | In an impulse turbine ? | |
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the steam is expanded in nozzles only and there is a pressure drop and heat drop
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the steam is expanded both in fixed and moving blades continuously
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the steam is expanded in moving blades only
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the pressure and temperature of steam remains constant
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| 8. | The reheat factor is the ratio of the ? | |
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cumulative heat drop to the isentropic heat drop
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isentropic heat drop to the heat supplied
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total useful heat drop to the total isentropic heat drop
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none of the above
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| 9. | Steam turbines are used for ? | |
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large marine propulsion
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electric power generation
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direct drive of fans, compressors, pumps
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all of these
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| 10. | The flow through a nozzle is regarded as ? | |
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constant volume flow
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constant pressure flow
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isothermal flow
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isentropic flow
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