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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
When the speed of the crankshaft is between 100 r.p.m. and 250 r.p.m., the engine said to be a

Slow speed engine
Medium speed steam engine
High speed steam engine
None of the listed here

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Steam Boilers, Engines, Nozzles and Turbines
Relative percentage of heat absorbed through the heat transfer of(i) Furnace water wall(ii) Boiler tank(iii) Superheater(iv) Economizer(v) Air-heater of a typical boiler of 200 MW capacity would be of the order of

20 : 48 : 7 : 15 : 10
10 : 7 : 15 : 20 : 48
7 : 15 : 20 : 10 : 48
48 : 20 : 15 : 7 : 10

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Steam Boilers, Engines, Nozzles and Turbines
Which type of boiler can meet rapid changes of load?

Vertical fire tube type
Forced circulation type
Horizontal fire tube type
Horizontal water tube type

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Steam Boilers, Engines, Nozzles and Turbines
The difference of supersaturated temperature and saturation temperature at that pressure is called

Degree of under-cooling
None of the listed here
Degree of super-saturation
Degree of superheat

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Steam Boilers, Engines, Nozzles and Turbines
Locomotive boiler is of the following type

Multi tubular
All of the listed here
Horizontal
Internally fired

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Steam Boilers, Engines, Nozzles and Turbines
1 kg.m is equal to

9.81 Joules
None of these
102 Joules
427 Joules

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