Heating the oil in the settling tanks
Cooling the oil in the settling tanks
Burning the oil
Suspension
A. Heating the oil in the settling tanks
Remains the same
Increases
Decreases
Is unpredictable
Velocity compounded type
Reaction type
Pressure compounded type
All of these
Wholly in blades
Wholly in nozzle
Partly in the nozzle and partly in blades
None of these
Increases
Decreases
Does not effect
None of these
Natural draught
Induced draught
Forced draught
Balanced draught
100 bar
150 bar
200 bar
250 bar
Direction of steam flow
Number of stages
Mode of steam action
All of these
Linearly
Slowly first and then rapidly
Rapidly first and then slowly
Inversely
Before the economiser
Before the superheater
Between the economiser and chimney
None of these
The expansion of steam in a nozzle follows Rankine cycle.
The friction in the nozzle increases the dryness fraction of steam.
The pressure of steam at throat is called critical pressure.
All of the above
Stationary fire tube boiler
Internally fired boiler
Horizontal boiler
All of these
Increases
Decreases
Remains unchanged
Increases/decreases depending on steam temperature requirements
Barometric pressure + actual pressure
Barometric pressure - actual pressure
Gauge pressure + atmospheric pressure
Gauge pressure - atmospheric pressure
Horizontal
Vertical
Inclined
None of these
Maintain the speed of the turbine
Reduce the effective heat drop
Reheat the steam and improve its quality
Completely balance against end thrust
Horizontal fire tube boiler
Horizontal water tube boiler
Vertical water tube boiler
Vertical fire tube boiler
0.5 to 10 MN/m²
1 to 15 MN/m²
2.5 to 15 MN/m²
3.5 to 20 MN/m²
Vb = 0.5 V cosα
Vb = V cosα
Vb = 0.5 V² cosα
Vb = V² cosα
The ratio of heat actually used in producing the steam to the heat liberated in the furnace
The amount of water evaporated or steam produced in kg per kg of fuel burnt
The amount of water evaporated from and at 100° C into dry and saturated steam
The evaporation of 15.653 kg of water per hour from and at 100° C
Non-coking bituminous coal
Brown coal
Pulverised coal
Coking bituminous coal
1 m
2 m
3 m
4 m
Last superheater or reheater and air preheater
Induced draft fan and forced draft fan
Air preheater and chimney
None of the above
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
Steam temperature remains constant
Steam pressure remains constant
Steam enthalpy remains constant
Steam entropy remains constant
To give maximum space and strength
To withstand the pressure of steam inside the boiler
Both (A) and (B)
None of the above
More
Less
Same
None of these
Amount of water evaporated per hour
Steam produced in kg/h
Steam produced in kg/kg of fuel burnt
All of these
1 to 2 m
1.25 to 2.25 m
1.5 to 2.5 m
1.75 to 2.75 m
Reheating of steam
Regenerative feed heating
Binary vapour plant
Any one of these
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