Heat transfer takes place
Work is done by the expanding steam
Internal energy of steam changes
None of the above
D. None of the above
Correct fuel air ratio
Proper ignition temperature
O₂ to support combustion
All the three above
Large marine propulsion
Electric power generation
Direct drive of fans, compressors, pumps
All of these
Absolute velocity at the inlet of moving blade is equal to that at the outlet
Relative velocity at the inlet of the moving blade is equal to that at the outlet
Axial velocity at inlet is equal to that at the outlet
Whirl velocity at inlet is equal to that at the outlet
Former occupies less space for same power
Rate of steam flow is more in former case
Former is used for high installed capacity
Chances of explosion are less in former case.
Same value
Higher value
Lower value
Lower/higher depending on steam flow
Frictional losses
It is not possible to achieve 0°K temperature
Leakage
Non availability of ideal substance
The cost of the engine, for the same power and economy, is more than that of a simple steam engine.
The forces in the working parts are increased as the forces are distributed over more parts.
The ratio of expansion is reduced, thus reducing the length of stroke.
The temperature range per cylinder is increased, with corresponding increase in condensation.
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
30 MW
60 MW
100 MW
500 MW
Number of casing
Number of entries of steam
Number of exits of steam
Each row of blades
To dry flue gases
In moisture present in the fuel
To steam formed by combustion of hydrogen per kg of fuel
All of the above
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
It increases the thermodynamic efficiency of the turbine
Boiler is supplied with hot water
It decreases the power developed by the turbine
All of the above
3.3 bar
5.46 bar
8.2 bar
9.9 bar
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
Indicated power
Brake power
Frictional power
None of these
Increases the mean effective pressure
Increases the workdone
Decreases the efficiency of the engine
All of these
One fourth
Half
One
Two
Initial pressure and superheat
Exit pressure
Turbine stage efficiency
All of these
Carbon, hydrogen, nitrogen, sulphur, moisture
Fixed carbon, ash, volatile matter, moisture
Higher calorific value
Lower calorific value
Lowers the boiling point of a liquid
Raises the boiling point of a liquid
Does not affects the boiling point of a liquid
Reduces its volume
More
Equal
Less
Could be more or less depending on the size of plant
Increases
Decreases
Remain unaffected
First increases and then decreases
Essentially an isentropic process
Non-heat transfer process
Reversible process
Constant temperature process
Steam jet
Centrifugal fan
Chimney
Both (A) and (B)
60°
90°
180°
270°
Isothermal
Isentropic
Hyperbolic
Polytropic
One
Two
Three
Four
Wet
Superheated
Remain dry saturated
Dry
Maximum
Minimum
Zero
Depends on temperature also