The steam is expanded in nozzles only and there is a pressure drop and heat drop
The steam is expanded both in fixed and moving blades continuously
The steam is expanded in moving blades only
The pressure and temperature of steam remains constant
A. The steam is expanded in nozzles only and there is a pressure drop and heat drop
Bismuth
Copper
Aluminium
Nickel
Babcock and Wilcox
Locomotive
Lancashire
Cochran
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
15 %
20 %
30 %
45 %
More
Less
Equal
May be more or less depending on capacity of reheater
Zero
Minimum
Maximum
None of these
Vb = 0.5 V cosα
Vb = V cos α
Vb = 0.5 V² cosα
Vb = V² cosα
Horizontal
Vertical
Inclined
None of these
Volume
Pressure
Entropy
Enthalpy
50°C and normal atmospheric pressure
50°C and 1.1 bar pressure
100°C and normal atmospheric pressure
100°C and 1.1 bar pressure
0.5 to 10 MN/m²
1 to 15 MN/m²
2.5 to 15 MN/m²
3.5 to 20 MN/m²
Volume of intake steam
Pressure of intake steam
Temperature of intake steam
All of these
More
Less
Same
Could be more or less depending on other factors
Equal to
Twice
Three times
Four times
kg of steam produced
Steam pressure produced
kg of fuel fired
kg of steam produced per kg of fuel fifed
Pressure increases while velocity decreases
Pressure decreases while velocity increases
Pressure and velocity both decreases
Pressure and velocity both increases
Heat carried away by flue gases
Heat carried away by ash
Moisture present in fuel and steam formed by combustion of hydrogen in fuel
All of the above
Equal to
Less than
More than
None of these
1000 J
360 kJ
3600 kJ
3600 kW/sec
Stationary fire tube boiler
Internally fired boiler
Horizontal boiler
All of these
Has no effect on
Decreases
Increases
None of these
Evaporative capacity
Factor of evaporation
Equivalent evaporation
One boiler h.p.
It has heating value
It helps in electrostatic precipitation of ash in flue gases
It leads to corrosion of air heaters, ducting, etc. if flue gas exit temperature is low
It erodes furnace walls
Last superheater or reheater and air preheater
Induced draft fan and forced draft fan
Air preheater and chimney
None of the above
Superheat the steam
Reduce fuel consumption
Increase steam pressure
All of these
The given boiler with the model
The two different boilers of the same make
Two different makes of boilers operating under the same operating conditions
Any type of boilers operating under any conditions
Lamont boiler
Benson boiler
Loeffler boiler
All of these
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 forced draft fan
To provide reciprocating motion to the slide valve
To convert reciprocating motion of the piston into rotary motion of the crank
To convert rotary motion of the crankshaft into to and fro motion of the valve rod
To provide simple harmonic motion to the D-slide valve
As an impulsive force
As a reaction force
Partly as an impulsive force and partly as a reaction force
None of the above