2 to 4.5 m
3 to 5 m
5 to 7.5 m
7 to 9 m
C. 5 to 7.5 m
539 kcal/ kg
539 BTU/ lb
427 kcal/ kg
100 kcal/ kg
0.1
0.3
0.5
0.8
Remains the same
Increases
Decreases
Is unpredictable
Boil
Flash i.e. get converted into steam
Remain as it was
Cool down
1.5 to 2 m
2.5 to 3.5 m
3.5 to 4.5 m
None of these
Coking coal
Non-coking or free burning coal
Pulverised coal
High sulphur coal
Blading efficiency
Nozzle efficiency
Gross or stage efficiency
Mechanical efficiency
0.5 to 1 m
1 to 2 m
1.25 to 2.5 m
2 to 3 m
Wet steam
Saturated steam
Superheated steam
Cushion steam
Side by side and each cylinder has common piston, connecting rod and crank
Side by side and each cylinder has separate piston, connecting rod and crank
At 90° and each cylinder has common piston, connecting rod and crank
At 90° and each cylinder has separate piston, connecting rod and crank
Avoid excessive build up of pressure
Avoid explosion
Extinguish fire if water level in the boiler falls below alarming limit
Control steam dome
p₁. p₂
p₁/p₂
p₂/p₁
p₁ + p₂
Steam enters and exhausts through the same port
Steam enters at one end and exhausts at the centre
Steam enters at the centre and exhausts at the other end
None of the above
Prevent flat surfaces under pressure from tearing apart
Take care of failure in shear
Take care of failure in compression
Provide support for boiler
Heat transfer takes place across cylinder walls
Work is done
Steam may be wet, dry or superheated after expansion
All of the above
Condenser efficiency
Vacuum efficiency
Nozzle efficiency
Boiler efficiency
Reheat factor
Stage efficiency
Internal efficiency
Rankine efficiency
Tonnes/hr. of steam
Pressure of steam in kg/cm²
Temperature of steam in °C
All of the above
More
Less
Equal
None of these
Drooping characteristic
Linear characteristic
Rising characteristic
Flat characteristic
Cornish boiler is a water tube boiler whereas Lancashire boiler is a fire tube boiler
Cornish boiler is a fire tube boiler whereas Lancashire boiler is a water tube boiler
Cornish boiler has one flue tube whereas Lancashire boiler has two flue tubes
Cornish boiler has two flue tubes whereas Lancashire boiler has one flue tube
Stage efficiency
Internal efficiency
Rankine efficiency
None of these
Infinitely long
Around 200 meters
Equal to the height of the hot gas column producing draught
Outside temperature is very low
Regulate flow of boiler water
Check level of water in boiler drum
Recirculate unwanted feed water
Allow high pressure feed water to flow to drum and not allow reverse flow to take place
Equal to
Less than
Higher than
None of these
Heating the oil in the settling tanks
Cooling the oil in the settling tanks
Burning the oil
Suspension
High pressure and a low velocity
High pressure and a high velocity
Low pressure and a low velocity
Low pressure and a high velocity
Stage efficiency
Diagram efficiency
Nozzle efficiency
None of these
Economiser
Superheater
Both (A) and (B)
None of these
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