Spontaneous combustion is a phenomenon in which

Steam Boilers, Engines, Nozzles and Turbines
Spontaneous combustion is a phenomenon in which

All the fuel burns instantaneously producing high energy release

Fuel burns with less air

Explosion in furnace

Coal bursts into flame without any external ignition source but by itself due to gradual increase in temperature as a result of heat released by combination of oxygen with coal

All the fuel burns instantaneously producing high energy release

Fuel burns with less air

Explosion in furnace

Coal bursts into flame without any external ignition source but by itself due to gradual increase in temperature as a result of heat released by combination of oxygen with coal

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Steam Boilers, Engines, Nozzles and Turbines
Pick up wrong statement about desired properties of a good fuel

Ease in storing

High calorific value

High ignition point

Produce minimum smoke and gases

Ease in storing

High calorific value

High ignition point

Produce minimum smoke and gases

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Steam Boilers, Engines, Nozzles and Turbines
A throttle governed steam engine develops 15 kW with 280 kg per hour of steam and 35 kW with 520 kg per hour of steam. The steam consumption in kg per hour when developing 20 kW will be nearly

210 kg/h

280 kg/h

150 kg/h

340 kg/h

210 kg/h

280 kg/h

150 kg/h

340 kg/h

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Steam Boilers, Engines, Nozzles and Turbines
The discharge is __________ at critical pressure.

Minimum

Maximum

Zero

None of these

Minimum

Maximum

Zero

None of these

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

1 kg/cm

6 kg/cm

100 kg/cm²

17 kg/cm²

1 kg/cm

6 kg/cm

100 kg/cm²

17 kg/cm²

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Steam Boilers, Engines, Nozzles and Turbines
The draught (in mm of water), for maximum discharge of flue gases through the chimney, is given by (where H = Height of the chimney in meters, and T1 = Absolute temperature of air outside the chimney in K)

T1 /88.25H

176.5H/T1

88.25H/T1

T1 /176.5H

T1 /88.25H

176.5H/T1

88.25H/T1

T1 /176.5H

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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines Spontaneous combustion is a phenomenon in which

Steam Boilers, Engines, Nozzles and Turbines Pick up wrong statement about desired properties of a good fuel

Steam Boilers, Engines, Nozzles and Turbines A throttle governed steam engine develops 15 kW with 280 kg per hour of steam and 35 kW with 520 kg per hour of steam. The steam consumption in kg per hour when developing 20 kW will be nearly

Steam Boilers, Engines, Nozzles and Turbines The discharge is __________ at critical pressure.

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

Steam Boilers, Engines, Nozzles and Turbines The draught (in mm of water), for maximum discharge of flue gases through the chimney, is given by (where H = Height of the chimney in meters, and T1 = Absolute temperature of air outside the chimney in K)

Steam Boilers, Engines, Nozzles and Turbines
Spontaneous combustion is a phenomenon in which

Steam Boilers, Engines, Nozzles and Turbines
Pick up wrong statement about desired properties of a good fuel

Steam Boilers, Engines, Nozzles and Turbines
A throttle governed steam engine develops 15 kW with 280 kg per hour of steam and 35 kW with 520 kg per hour of steam. The steam consumption in kg per hour when developing 20 kW will be nearly

Steam Boilers, Engines, Nozzles and Turbines
The discharge is __________ at critical pressure.

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

Steam Boilers, Engines, Nozzles and Turbines
The draught (in mm of water), for maximum discharge of flue gases through the chimney, is given by (where H = Height of the chimney in meters, and T1 = Absolute temperature of air outside the chimney in K)