Q. What is the condition of the fluids in closed heaters?

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Q. Closed heaters are ______________ heat exchangers.

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Q. What is the other name of the condensate obtained after condensation in a shell-and-tube heat exchanger type closed heaters?

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Q. What is the function of the trap applied to the condensate?

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Q. Which of these is the correct expression for terminal temperature difference(TTD)?

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Q. If terminal temperature difference (TTD) is too small, what will be its impact on plant efficiency?

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Q. If plant efficiency is high, what will be its effect on heater size?

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Q. When is a drain-cooler used?

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Q. Which of these is a disadvantage of open heater?

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Q. Which of the following is not an advantage of an open heater?

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Q. The number of pumps required by a closed heater for pumping the main feedwater stream is?

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Q. What is the purpose of using open heaters in steam power plants?

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Q. Why are closed heaters sometimes made vertical?

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Q. In the T-S diagram of a Rankine cycle, the abscissa represents?

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Q. After the expansion of throttle steam, why is some steam extracted?

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Q. The heat given up by the expansion of throttle steam is utilised in?

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Q. “Regenerative feedwater heating by turbine extraction” is often termed as?

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Q. A regenerative feedwater heating cycle with an infinite number of feedwater heaters has efficiency equal to?

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Q. In the T-S diagram, the process of heating from condenser to boiler saturation temperature when the number of turbine extraction stages are finite is?

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Q. For the process of heating from condenser to boiler saturation temperature to be reversible, the number of extraction stages involved in the entire cycle should be?

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