To provide proper conditions for continuous complete combustion
Mix fuel with air and ignite
Separate ash from coal
Maintain heat supply to prepare and ignite the incoming fuel
C. Separate ash from coal
To guide motion of the piston rod and to prevent it from bending
To transfer motion from the piston to the cross head
To convert heat energy of the steam into mechanical work
To exhaust steam from the cylinder at proper moment
Steam condenser
Steam boiler
Steam preheater
Economiser
Throttling calorimeter
Separating calorimeter
Combined separating and throttling calorimeter
Bucket calorimeter
Drooping characteristic
Linear characteristic
Rising characteristic
Flat characteristic
100°C
Above dew point temperature of flue gases
Below dew point temperature of flue gases
Less than wet bulb temperature of flue gases
Reduce speed of rotor
Improve efficiency
Reduce exit losses
All of these
Diverge from left to right
Diverge from right to left
Are equally spaced throughout
First rise up and then fall
Increases
Decreases
Does not effect
None of these
Volume of intake steam
Pressure of intake steam
Temperature of intake steam
All of these
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
Increases evaporative capacity of the boiler
Increases the efficiency of the boiler
Enables low grade fuel to be burnt
All of the above
Atmospheric temperature
500-600°C
700-850°C
950-1100°C
Prevent the bulging of flat surfaces
Avoid explosion in furnace
Prevent leakage of hot flue gases
Support furnace freely from top
Condenser efficiency
Nozzle efficiency
Boiler efficiency
Vacuum efficiency
Chimney
Induced draft fan
Both combined (A) and (B)
Steam jet draught
Simple impulse turbine
Simple reaction turbine
Impulse-reaction turbine
None of these
Wholly in blades
Wholly in nozzle
Partly in the nozzle and partly in blades
None of these
Mass of the steam discharged increases
Entropy and specific volume of the steam increases
Exit velocity of steam reduces
All of these
The steam is admitted on one side of the piston and one working stroke is produced during each revolution of the crankshaft
The steam is admitted, in turn, on both sides of the piston and one working stroke is produced during each revolution of the crankshaft
The steam is admitted on one side of the piston and two working strokes are produced during each revolution of the crankshaft
The steam is admitted, in turn, on both sides of the piston and two working strokes are produced during each revolution of the crankshaft
4.75 mm
5.47 mm
7.45 mm
47.5 mm
Barometric pressure + actual pressure
Barometric pressure - actual pressure
Gauge pressure + atmospheric pressure
Gauge pressure - atmospheric pressure
Non-coking bituminous coal
Brown coal
Pulverised coal
Coking bituminous coal
Supply of excess, air
Supply of excess coal
Burning CO and unburnts in upper zone of furnace by supplying more air
Fuel bed firing
Gravimetric analysis of the flue gases
Volumetric analysis of the flue gases
Mass flow of the flue gases
Measuring smoke density of flue gases
Mechanical efficiency
Overall efficiency
Indicated thermal efficiency
Brake thermal efficiency
Divergent nozzle
Convergent nozzle
Convergent-divergent nozzle
None of these
To determine the generating capacity of the boiler
To determine the thermal efficiency of the boiler when working at a definite pressure
To prepare heat balance sheet for the boiler
All of the above
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
Lever safety valve
Dead weight safety valve
High steam and low water safety valve
All of these
Economiser
Superheater
Both (A) and (B)
None of these