Question 21 : The definition of the draught system is
1. A device used to pull in air.
2. The difference between absolute gas pressure at any point in a gas flow and the ambient atmospheric pressure.
3. The sum of the absolute gas pressure at any point in a gas flow and the ambient atmospheric pressure.
4. A device used to pull out air
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Question 22 : Steam turbines may be classified according to
1. number of stages
2. direction of steam flow
3. mode of steam action
4. all of the mentioned
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Question 23 : Moving blades are placed next to?
1. Fixed blades
2. Nozzle
3. Nozzle vanes
4. None of the mentioned
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Question 24 : A ______ is a duct through which velocity of a fluid increases at the expense of pressure.
1. orifice
2. nozzle
3. jet
4. diffuser
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Question 25 : What is another name of converging nozzle?
1. diverging nozzle
2. subsonic nozzle
3. supersonic nozzle
4. none of the mentioned
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Question 26 : The supersaturated flow of steam through a nozzle as compared to a stable flow, the available heat drop
1. increases
2. decreases
3. is unpredictable
4. remains same
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Question 27 : Governing principle(s) of steam turbine is?
1. Nozzle control governing
2. Throttle governing
3. Bypass governing
4. All of the mentioned
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Question 28 : Based on the type of applications, the nozzles are divided into?
1. 3 types
2. 4 types
3. 2 types
4. 5 types
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Question 29 : A steam turbine with no nozzle is?
1. Reaction Turbine
2. Impulse Turbine
3. both of the mentioned
4. none of the mentioned
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Question 30 : Evaporative type of condenser has
1. Water in pipes surrounded by steam outside.
2. Steam and cooling water mixed to give the condensate.
3. Steam in pipes surrounded by water.
4. None of the mentioned
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