Provide air around burners for obtaining optimum combustion
Transport and dry the coal
Convert CO (formed in lower zone of furnace) into CO₂ at higher zone
Air delivered by induced draft fan
A. Provide air around burners for obtaining optimum combustion
Feed pump
Injector
Feed check valve
Pressure gauge
The mechanical draught reduces the height of chimney.
The natural draught reduces the fuel consumption.
A balanced draught is a combination of induced and forced draught.
All of the above
Vb = 0.5 V cosα
Vb = V cosα
Vb = 0.5 V² cosα
Vb = V² cosα
Form lumps or masses of coke
Burn freely
Show little or no fusing action
Burn completely
Natural draught
Induced draught
Forced draught
Balanced draught
Low
Very low
High
Very high
Equivalent evaporation
Factor of evaporation
Boiler efficiency
Power of a boiler
0.546
0.577
0.582
0.601
To draw water
To circulate water
To drain off the water
All of these
Condenser efficiency
Vacuum efficiency
Nozzle efficiency
Boiler efficiency
Boiler effectiveness
Boiler evaporative capacity
Factor of evaporation
Boiler efficiency
Ratio of heat actually used in producing steam to the heat liberated in the furnace
Ratio of the mass of steam produced to the mass of total water supplied in a given time
Ratio of the heat liberated in the furnace to the heat actually used in producing steam
None of the above
Drooping characteristic
Linear characteristic
Rising characteristic
Flat characteristic
The ratio of heat actually used in producing the steam to the heat liberated in the furnace
The amount of water evaporated or steam produced in kg per kg of fuel burnt
The amount of water evaporated from and at 100°C into dry and saturated steam
The evaporation of 15.653 kg of water per hour from and at 100°C
p₁. p₂
p₁/p₂
p₂/p₁
p₁ + p₂
1.5 m, 4 m
1.5 m, 6 m
1 m, 4 m
2 m, 4 m
Equal to
Less than
More than
None of these
Cavitation of boiler feed pumps
Corrosion caused by oxygen
Heat transfer coefficient
pH value of water
V = 44.72 hd K
V = 44.72 K hd
V = 44.72 K hd
V = 44.72 K hd
Water level indicator
Pressure gauge
Safety valve
All of these
2 sin²α/(1 + sin²α)
2 cos²α/(1 + cos²α)
(1 + sin²α)/2 sin²α
(1 + cos²α)/2 cos²α
1 kg/cm
6 kg/cm
17 kg/cm²
100 kg/cm²
0°C
40°C
60°C
100°C
1000 J
360 kJ
3600 kJ
3600 kW/sec
To dry flue gases
In moisture present in the fuel
To steam formed by combustion of hydrogen per kg of fuel
All of the above
At the entrance to the nozzle
At the throat of the nozzle
In the convergent portion of the nozzle
In the divergent portion of the nozzle
To provide an adequate supply of air for the fuel combustion
To exhaust the gases of combustion from the combustion chamber
To discharge the gases of combustion to the atmosphere through the chimney
All of the above
Receiver type compound engine
Tandem type compound engine
Woolf type compound engine
Both (A) and (B)
Create vacuum in furnace
Create vacuum at turbine exhaust
Pump feed water
Dose chemicals in feed water
Lowers the boiling point of a liquid
Raises the boiling point of a liquid
Does not affects the boiling point of a liquid
Reduces its volume