More
Equal
Less
Could be more or less depending on the size of plant
C. Less
Boiler efficiency, turbine efficiency, generator efficiency
All the three above plus gas cycle efficiency
Carnot cycle efficiency
Regenerative cycle efficiency
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
Choked
Under-damping
Over-damping
None of these
The efficient steam jacketing of the cylinder walls
Superheating the steam supplied to the engine cylinder
Keeping the expansion ratio small in each cylinder
All of the above
30 MW
60 MW
100 MW
500 MW
Vertical fire tube type
Horizontal fire tube type
Horizontal water tube type
Forced circulation type
More heating surface
Less heating surface
Equal heating surface
Heating surface depends on other parameters
When the cross-section of the nozzle increases continuously from entrance to exit
When the cross-section of the nozzle decreases continuously from entrance to exit
When the cross-section of the nozzle first decreases from entrance to throat and then increases from its throat to exit
None of the above
Heat energy of steam into kinetic energy
Kinetic energy into heat energy of steam
Heat energy of steam into potential energy
Potential energy into heat energy of steam
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
Straight
Circular
Curved
None of these
Anthracite coal
Bituminous coal
Lignite
Peat
Diverge from left to right
Diverge from right to left
Are equally spaced throughout
First rise up and then fall
Very low pressure
Atmospheric pressures
Medium pressures
Very high pressures
From a metal wall from one medium to another
From heating an intermediate material and then heating the air from this material
By direct mixing
Heat is transferred by bleeding some gas from furnace
Indicated power
Brake power
Frictional power
None of these
Horizontal
Vertical
Inclined
None of these
Isothermal
Isentropic
Hyperbolic
Polytropic
Cylinder feed indicated mass of steam
Cylinder feed + indicated mass of steam
Mass of cushion steam + indicated mass of steam
Mass of cushion steam + cylinder feed
Has no effect on
Decreases
Increases
None of these
Chimney
Centrifugal fan
Steam jet
None of these
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
Superheat the steam
Reduce fuel consumption
Increase steam pressure
All 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
Binding the pulverised coal into briquettes
Amount of water evaporated per hour
Steam produced in kg/h
Steam produced in kg/kg of fuel burnt
All of these
Wholly in blades
Wholly in nozzle
Partly in the nozzle and partly in blades
None of these
Does not change
Increases
Decreases
None of these
Horizontal straight line
Vertical straight line
Straight inclined line
Curved line
0.007 bar
0.053 bar
0.06 bar
0.067 bar
V = 2g H'
V = 2g/H'
V = H'/2g
V = 2gH'