In a boiler, feed water supplied per hour is 205 kg while coal fired per hour is 23 kg. The net enthalpy rise per kg of water is 145 kJ. If the calorific valve of the coal is 2050 kJ/kg, then the boiler efficiency will be

Steam Boilers, Engines, Nozzles and Turbines
In a boiler, feed water supplied per hour is 205 kg while coal fired per hour is 23 kg. The net enthalpy rise per kg of water is 145 kJ. If the calorific valve of the coal is 2050 kJ/kg, then the boiler efficiency will be

0.78

0.56

0.63

0.74

0.78

0.56

0.63

0.74

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Steam Boilers, Engines, Nozzles and Turbines
The function of injector used in small capacity boilers is to

Create vacuum

Pump water, similar to boiler feed pump

Add make up water in the system

Inject chemical solution in feed pump

Create vacuum

Pump water, similar to boiler feed pump

Add make up water in the system

Inject chemical solution in feed pump

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

None of these

9.81 Joules

427 Joules

102 Joules

None of these

9.81 Joules

427 Joules

102 Joules

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following varieties of coals is mostly used in steam boilers?

Brown coal

None of the listed here

Peat

Non-coking bituminous coal

Brown coal

None of the listed here

Peat

Non-coking bituminous coal

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Steam Boilers, Engines, Nozzles and Turbines
A supercritical boiler is one that operates above the pressure and temperature of following values

1 kg/cm² and 100°C

218 kg/cm² abs and 540°C

100 kg/cm² and 540°C

218 kg/cm² abs and 373°C

1 kg/cm² and 100°C

218 kg/cm² abs and 540°C

100 kg/cm² and 540°C

218 kg/cm² abs and 373°C

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Steam Boilers, Engines, Nozzles and Turbines
A compound steam engine in which the high pressure and low pressure cylinders have common piston rod, is called

None of these

Tandem type compound engine

Woolf type compound engine

Receiver type compound engine

None of these

Tandem type compound engine

Woolf type compound engine

Receiver type compound engine

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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines In a boiler, feed water supplied per hour is 205 kg while coal fired per hour is 23 kg. The net enthalpy rise per kg of water is 145 kJ. If the calorific valve of the coal is 2050 kJ/kg, then the boiler efficiency will be

Steam Boilers, Engines, Nozzles and Turbines The function of injector used in small capacity boilers is to

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

Steam Boilers, Engines, Nozzles and Turbines Which of the following varieties of coals is mostly used in steam boilers?

Steam Boilers, Engines, Nozzles and Turbines A supercritical boiler is one that operates above the pressure and temperature of following values

Steam Boilers, Engines, Nozzles and Turbines A compound steam engine in which the high pressure and low pressure cylinders have common piston rod, is called

Steam Boilers, Engines, Nozzles and Turbines
In a boiler, feed water supplied per hour is 205 kg while coal fired per hour is 23 kg. The net enthalpy rise per kg of water is 145 kJ. If the calorific valve of the coal is 2050 kJ/kg, then the boiler efficiency will be

Steam Boilers, Engines, Nozzles and Turbines
The function of injector used in small capacity boilers is to

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

Steam Boilers, Engines, Nozzles and Turbines
Which of the following varieties of coals is mostly used in steam boilers?

Steam Boilers, Engines, Nozzles and Turbines
A supercritical boiler is one that operates above the pressure and temperature of following values

Steam Boilers, Engines, Nozzles and Turbines
A compound steam engine in which the high pressure and low pressure cylinders have common piston rod, is called