| 1. | The steam enters the nozzle at a ? | |
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high pressure and a low velocity
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high pressure and a high velocity
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low pressure and a low velocity
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low pressure and a high velocity
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Report Question| 2. | The process of maintaining the speed of the turbine constant for various load conditions, is known as ? | |
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bleeding
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reheating
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governing
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none of these
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| 3. | The critical pressure ratio for initially dry saturated steam is ? | |
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0.546
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0.577
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0.582
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0.601
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| 4. | The diagram efficiency is the ratio of ? | |
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work done on the blades to the energy supplied to the blades
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work done on the blades per kg of steam to total energy supplied per stage per kg of steam
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energy supplied to the blades per kg of steam to the total energy supplied per stage per kg of steam
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none of the above
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| 5. | A steam nozzle converts ? | |
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heat energy of steam into kinetic energy
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kinetic energy into heat energy of steam
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heat energy of steam into potential energy
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potential energy into heat energy of steam
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| 6. | The impulse turbine rotor efficiency will have a maximum value of 0.5 cos² a, where a is the nozzle exit flow angle, if the ? | |
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blades are equiangular
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blade velocity coefficient is unity
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blades are equiangular and frictionless
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blade solidity is 0.65
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| 7. | A steam turbine, in which a part of the steam after partial expansion, is used for process heating and the remaining steam is further expanded for power generation, is known as ? | |
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back pressure turbine
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pass out turbine
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low pressure turbine
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impulse turbine
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| 8. | The effect of supersaturation is that the ? | |
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mass of the steam discharged increases
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entropy and specific volume of the steam increases
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exit velocity of steam reduces
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all of these
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| 9. | In a reaction turbine, when steam flows through the fixed blades ? | |
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pressure increases while velocity decreases
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pressure decreases while velocity increases
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pressure and velocity both decreases
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pressure and velocity both increases
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| 10. | The friction present between the steam and the nozzle surfaces reduces the heat drop by ? | |
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10 to 15 percent
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15 to 25 percent
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25 to 40 percent
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40 to 60 percent
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