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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Fire tube boilers are limited to a maximum design working pressure of

1 kg/cm
6 kg/cm
17 kg/cm²
100 kg/cm²

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Steam Boilers, Engines, Nozzles and Turbines
Fire tube boilers are

Internally as well as externally fired
None of these
Externally fired
Internally fired

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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

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

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Steam Boilers, Engines, Nozzles and Turbines
Incomplete combustion can be best judged by

Measuring carbon monoxide in flue gases
Smoky chimney exit
Measuring temperature of flue gases at exit of furnace
Excess air in flue gases

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Steam Boilers, Engines, Nozzles and Turbines
The device attached to the steam chest for preventing explosions due to excessive internal pressure of steam is called

Safety valve
Fusible plug
Pressure gauge
Water level indicator

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Steam Boilers, Engines, Nozzles and Turbines
Steam turbines are used for

Large marine propulsion
All of these
Direct drive of fans, compressors, pumps
Electric power generation

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MORE MCQ ON Steam Boilers, Engines, Nozzles and Turbines

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