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

0.74

0.56

0.63

0.78

0.74

0.56

0.63

0.78

ANSWER DOWNLOAD EXAMIANS APP

Steam Boilers, Engines, Nozzles and Turbines
Film boiling occurs at

Very low pressure

Very high pressures

Atmospheric pressures

Medium pressures

Very low pressure

Very high pressures

Atmospheric pressures

Medium pressures

ANSWER DOWNLOAD EXAMIANS APP

Steam Boilers, Engines, Nozzles and Turbines
In fire tube boilers

None of these

Water passes through the tubes which are surrounded by flames and hot gases

The flames and hot gases pass through the tubes which are surrounded by water

Forced circulation takes place

None of these

Water passes through the tubes which are surrounded by flames and hot gases

The flames and hot gases pass through the tubes which are surrounded by water

Forced circulation takes place

ANSWER DOWNLOAD EXAMIANS APP

Steam Boilers, Engines, Nozzles and Turbines
Besides mean effective pressure, the data required to determine the indicated power of an engine include

Specific fuel consumption, speed of rotation and torque

Piston diameter, specific fuel consumption and Calorific value of fuel

Piston diameter, length of stroke and calorific value of fuel

Piston diameter, length of stroke and speed of rotation

Specific fuel consumption, speed of rotation and torque

Piston diameter, specific fuel consumption and Calorific value of fuel

Piston diameter, length of stroke and calorific value of fuel

Piston diameter, length of stroke and speed of rotation

ANSWER DOWNLOAD EXAMIANS APP

Steam Boilers, Engines, Nozzles and Turbines
The heat balance sheet for the boiler shows the

Moisture present in the fuel

All of these

Complete account of heat supplied by 1 kg of dry fuel and the heat consumed

Steam formed by combustion of hydrogen per kg of fuel

Moisture present in the fuel

All of these

Complete account of heat supplied by 1 kg of dry fuel and the heat consumed

Steam formed by combustion of hydrogen per kg of fuel

ANSWER DOWNLOAD EXAMIANS APP

Steam Boilers, Engines, Nozzles and Turbines
The factor of evaporation for all boilers is always

Equal to unity

Less than unity

None of these

Greater than unity

Equal to unity

Less than unity

None of these

Greater than unity

ANSWER DOWNLOAD EXAMIANS APP

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 Film boiling occurs at

Steam Boilers, Engines, Nozzles and Turbines In fire tube boilers

Steam Boilers, Engines, Nozzles and Turbines Besides mean effective pressure, the data required to determine the indicated power of an engine include

Steam Boilers, Engines, Nozzles and Turbines The heat balance sheet for the boiler shows the

Steam Boilers, Engines, Nozzles and Turbines The factor of evaporation for all boilers is always

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
Film boiling occurs at

Steam Boilers, Engines, Nozzles and Turbines
In fire tube boilers

Steam Boilers, Engines, Nozzles and Turbines
Besides mean effective pressure, the data required to determine the indicated power of an engine include

Steam Boilers, Engines, Nozzles and Turbines
The heat balance sheet for the boiler shows the

Steam Boilers, Engines, Nozzles and Turbines
The factor of evaporation for all boilers is always