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
D. All of the above
Clearance volume to the swept volume
Clearance volume to the volume at cut-off
Volume at cut-off to the swept volume
Swept volume to the clearance volume
Carnot cycle
Rankine cycle
Joule cycle
Stirling cycle
Equal to
Lower than
Higher than
None of these
More
Less
Equal
None of these
Increases
Decreases
Does not effect
None of these
50°C and normal atmospheric pressure
50°C and 1.1 bar pressure
100°C and normal atmospheric pressure
100°C and 1.1 bar pressure
ps - pa
pa - ps
pa + ps
None of these
Steam condenser
Steam boiler
Steam preheater
Economiser
Drooping characteristic
Linear characteristic
Rising characteristic
Flat characteristic
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 gases from furnace
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
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
Equal power developed in each cylinder for uniform turning moment
Equal initial piston loads on all pistons for obtaining same size of piston rod, connecting rod etc. for all cylinders
Equal temperature drop in each cylinder for economy of steam
All of the above
Pressure increases while velocity decreases
Pressure decreases while velocity increases
Pressure and velocity both decreases
Pressure and velocity both increases
More
Less
Same
Could be more or less depending on other factors
0.528
0.546
0.577
0.582
Has no effect on
Decreases
Increases
None of these
Equal to
Less than
More than
None of these
21 %
23 %
30 %
40 %
2 sin²α/(1 + sin²α)
2 cos²α/(1 + cos²α)
(1 + sin²α)/2 sin²α
(1 + cos²α)/2 cos²α
Convection
Radiation
Conduction
Radiation and conduction
Provide air around burners for obtaining optimum combustion
Transport and dry the coal
Cool the scanners
Convert CO (formed in lower zone of furnace) into CO₂ at higher zone.
Wholly in blades
Wholly in nozzle
Partly in the nozzle and partly in blades
None of these
LaMont boiler
Lancashire boiler
Velox boiler
Benson boiler
10 to 15 %
15 to 20 %
20 to 30 %
30 to 40 %
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
Water
Dry steam
Wet steam
Super heated steam
Fixed blades
Moving blades
Both fixed and moving blades
None of these
Indicated power
Brake power
Frictional power
None of these
Same
Less
More
None of these