Vb = 0.5 V cosα
Vb = V cosα
Vb = 0.5 V² cosα
Vb = V² cosα
A. Vb = 0.5 V cosα
Gravimetric analysis of the flue gases
Volumetric analysis of the flue gases
Mass flow of the flue gases
Measuring smoke density of flue gases
Last superheater or reheater and air preheater
Induced draft fan and forced draft fan
Air preheater and chimney
None of the above
It increases the thermodynamic efficiency of the turbine
Boiler is supplied with hot water
It decreases the power developed by the turbine
All of the above
0.5 to 1 m
1 to 2 m
1.25 to 2.5 m
2 to 3 m
Induced draft fan
Smoke meter
Chimney
Precipitator
Vb = 0.5 V cosα
Vb = V cosα
Vb = 0.5 V² cosα
Vb = V² cosα
A steam turbine develops higher speeds
The efficiency of steam turbine is higher
The steam consumption is less
All of these
Create vacuum in furnace
Create vacuum at turbine exhaust
Pump feed water
Dose chemicals in feed water
1 m
1.5 m
2 m
2.5 m
Where low speeds are required
For small power purposes and low speeds
For large power purposes
For small power purposes and high speeds
Increase thermal efficiency of boiler
Economise on fuel
Extract heat from the exhaust flue gases
Increase flue gas temperature
Locomotive boiler
Lancashire boiler
Cornish boiler
Babcock and Wilcox boiler
To draw water
To circulate water
To drain off the water
All of these
Locomotive boiler
Babcock and Wilcox boiler
Stirling boiler
All of the above
9.81 Joules
102 Joules
427 Joules
None of these
Pulverising coal in inert atmosphere
Heating wood in a limited supply of air at temperatures below 300°C
Strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel
Enriching carbon in the coal
Blading efficiency
Nozzle efficiency
Gross or stage efficiency
Mechanical efficiency
Temperature, time, and turbulence
Total air, true fuel, and turbulence
Thorough mixing, total air and temperature
Total air, time, and temperature
Control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required
Empty the boiler when required and to discharge the mud, scale or sediments which are accumulated at the bottom of the boiler
Put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit
Increase the temperature of saturated steam without raising its pressure
The steam is allowed to expand in the nozzle, where it gives a high velocity before it enters the moving blades
The expansion of steam takes place partly in the fixed blades and partly in the moving blades
The steam is expanded from a high pressure to a condenser pressure in one or more nozzles
The pressure and temperature of steam remains constant
Receiver type compound engine
Tandem type compound engine
Woolf type compound engine
None of these
12 m
1.52.5 m
23 m
2.53.5 m
Has no effect on
Decreases
Increases
None of these
Evaporative capacity of a boiler
Equivalent evaporation from and at 100° C
Boiler efficiency
None of these
0.546
0.577
0.582
0.601
Surface condenser
Jet condenser
Barometric condenser
Evaporative condenser
ps - pa
pa - ps
pa + ps
None of these
Throttling calorimeter
Separating calorimeter
Combined separating and throttling calorimeter
Bucket calorimeter
Desirable
Economical
Essential
Uneconomical
Boiler drums
Superheater tubes
Economiser
A separate coil located in convection path.