Internally fired
Externally fired
Internally as well as externally fired
None of these
A. Internally fired
Decrease the mass flow rate and to increase the wetness of steam
Increase the mass flow rate and to increase the exit temperature
Decrease the mass flow rate and to decrease the wetness of steam
Increase the exit temperature without any effect on mass flow rate
Babcock and Wilcox
Locomotive
Lancashire
Cochran
Before the economiser
Before the superheater
Between the economiser and chimney
None of these
79 m/s
188 m/s
450 m/s
900 m/s
Indicated power
Brake power
Efficiency
Pressure of steam
Heating takes place at bottom and the water supplied at bottom gets converted into the mixture of steam bubbles and hot water which rise to drum
Water is supplied in drum and through down comers located in atmospheric condition it passes to the water wall and rises to drum in the form of mixture of water and steam
Feed pump is employed to supplement natural circulation in water wall type furnace
Water is converted into steam in one pass without any recirculation
Equal to
Lower than
Higher than
None of these
One-fourth
One-third
Two-fifth
One-half
Horizontal
Vertical
Inclined
None of these
12 m
1.52.5 m
23 m
2.53.5 m
Entropy
Enthalpy
Pressure
Temperature
Locomotive boiler
Cochran boiler
Cornish boiler
Babcock and Wilcox boiler
Pressure only
Temperature only
Dryness fraction only
Pressure and dryness fraction
The efficiency of steam turbines is greater than steam engines
A flywheel is a must for steam turbine
The turbine blades do not change the direction of steam issuing from the nozzle
The pressure of steam, in reaction turbines, is increased in fixed blades as well as in moving blades
A fire tube boiler occupies less space than a water tube boiler, for a given power.
Steam at a high pressure and in large quantities can be produced with a simple vertical boiler.
A simple vertical boiler has one fire tube.
All of the above
Workdone on the blades to the energy supplied to the blades
Workdone on the blades per kg of steam to the total energy supplied per stage per kg of steam
Energy supplied to the blades per kg of steam to the total energy supplied per stage per kg of steam
None of the above
Steam jet
Centrifugal fan
Chimney
Both (A) and (B)
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
1000 J
360 kJ
3600 kJ
3600 kW/sec
1.05
2.86
6.65
10.05
Cumulative heat drop to the isentropic heat drop
Isentropic heat drop to the heat supplied
Total useful heat drop to the total isentropic heat drop
None of the above
(h - hf1)/2257
(h + hf1)/2257
(h × hf1)/2257
None of these
Wholly in blades
Wholly in nozzle
Partly in the nozzle and partly in blades
None of these
In the drum
In the fire tubes
Above steam dome
Over the combustion chamber
Internally fired boiler
Externally fired boiler
Natural circulation boiler
Forced circulation boiler
High pressure and a low velocity
High pressure and a high velocity
Low pressure and a low velocity
Low pressure and a high velocity
Form lumps or masses of coke
Burn freely
Show little or no fusing action
Burn completely
Heat drop in fixed blades to the heat drop in moving blades
Heat drop in moving blades to the heat drop in fixed blades
Heat drop in moving blades to the heat drop in fixed blades plus heat drop in moving blades
Heat drop in fixed blades plus heat drop in moving blades to the heat drop in moving blades
Cut-off ratio
Expansion ratio
Clearance ratio
None of these
Economiser
Superheater
Both (A) and (B)
None of these