- 0 to 25 m
- 25 m to 250 m
- Above 250 m
- None of these
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When the head pumped against is less than the head of the fluid used for pumping, the usual device is a/an?
Answer: Option 4 Let'
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The unit power developed by a turbine is (where P = Power developed by the turbine under a head of water (H).?
Answer: Option 3 Let'
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The power developed by a turbine is (where H = Head of water under which the turbine is working)?
Answer: Option 3 Let'
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Statement : The meteorological department has issued a notification forecasting less rainfall during next year's monsoon. Courses of Action : I. The government should immediately set up a water authority for proper management of water resources. II. The water supply authorities should be asked to implement reduction in regular water supply to tackle the situation. III. The farmers should be advised to cultivate alternate crops which require less water during the coming months.?
Answer: Option 1 Getting the information well in advance clearly suggests that adequate water be saved for the crisis by proper management and moderate cuts in water supply. Cultivating alternate...
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Direction : Two statements I and II are given. These statement may be either independent causes or may be effects of independent causes or a common cause. One of these statements may be the effect of the other statements. Read both the statements and decide which of the following answer choice correctly depicts the relationship between these two statements. Mark answer : I. There is increase in water level of all the water tanks supplying drinking water to the city during the last fortnight. II. Most of the trains were cancelled last week due to water-logging on the tracks.?
Answer: Option 5 The problems discussed in both the statements are clearly the result of heavy downpour in the area.
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The specific speed of a turbine is the speed of an imaginary turbine, identical with the given turbine, which?
Answer: Option 3 Let'
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The speed of an imaginary turbine, identical with the given turbine, which will develop a unit power under a unit head, is known as?
Answer: Option 3 Let'
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There is a certain pressure ratio (optimum) for a gas turbine at which its thermal efficiency is maximum. With increase in turbine temperature, the value of pressure ratio for the peak efficiency would?
Answer: Option 3 There is a certain pressure ratio (optimum) for a gas turbine at which its thermal efficiency is maximum. With increase in turbine temperature, the value of pressure...
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The net head under which the turbine reaches its peak efficiency at synchronous speed is called?
Answer: Option 1 Let'
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High pressure steam is expanded adiabati-cally and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process:?
Answer: Option 2 For a reversible adiabatic process the entropy change is zero since $$dS = \frac{{\delta Q}}{T}$$ But the enthalpy change need not be zero since the internal energy and...
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