| 1. | When the inlet pressure of steam is equal to the exit pressure, then ? | |
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there is a pressure drop in the nozzle
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fluid flows through the nozzle
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pressure drops and fluid flows through the nozzle
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there is no pressure drop and fluid does not flow through the nozzle
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Report Question| 2. | De-Laval turbine is a ? | |
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simple impulse turbine
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simple reaction turbine
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impulse-reaction turbine
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none of these
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| 3. | Reheating of steam in a turbine ? | |
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increases the work done through the turbine
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increases the efficiency of the turbine
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reduces wear on the blades
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all of these
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| 4. | When the nozzle operates with the maximum mass flow, the nozzie is said to be ? | |
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choked
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underdamping
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overdamping
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none of these
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| 5. | Blading efficiency is also known as ? | |
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stage efficiency
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diagram efficiency
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nozzle efficiency
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none of these
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| 6. | Steam turbines may be classified according to ? | |
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direction of steam flow
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number of stages
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mode of steam action
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all of these
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| 7. | In a velocity compounded impulse turbine, when steam flows through the second row of moving blades ? | |
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velocity increases
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velocity decreases
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velocity remains constant
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pressure remains constant
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| 8. | Which of the following statement is correct for steam turbines as compared to reciprocating steam engines ? | |
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A steam turbine develops higher speeds
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The efficiency of steam turbine is higher
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The steam consumption is less
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all of these
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| 9. | In a reaction turbine, when steam flows through the moving 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. | In an ideal impulse turbine, the ? | |
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absolute velocity at the inlet of moving blade is equal to that at the outlet
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relative velocity at the inlet of the moving blade is equal to that at the outlet
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axial velocity at inlet is equal to that at the outlet
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whirl velocity at inlet is equal to that at the outlet
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