Reheating of steam
Regenerative feed heating
Binary vapour plant
Any one of these
D. Any one of these
Throttling calorimeter
Separating calorimeter
Combined separating and throttling calorimeter
Bucket calorimeter
The given boiler with the model
The two different boilers of the same make
Two different makes of boilers operating under the same operating conditions
Any type of boilers operating under any conditions
1 kg/cm²
5 kg/cm²
10 kg/cm²
18 kg/cm²
Back pressure turbine
Pass out turbine
Low pressure turbine
Impulse turbine
Boiler efficiency, turbine efficiency, generator efficiency
All the three above plus gas cycle efficiency
Carnot cycle efficiency
Regenerative cycle efficiency
Chimney
Induced draft fan
Both combined (A) and (B)
Steam jet draught
Cut-off ratio
Expansion ratio
Clearance ratio
None of these
Choked
Under-damping
Over-damping
None of these
Decrease dryness fraction of steam
Decrease specific volume of steam
Increase the entropy
Increase the heat drop
Infinitely long
Around 200 meters
Equal to the height of the hot gas column producing draught
Outside temperature is very low
Equal to
Less than
More than
None of these
Horizontal fire tube boiler
Horizontal water tube boiler
Vertical water tube boiler
Vertical fire tube boiler
Reduce speed of rotor
Improve efficiency
Reduce exit losses
All of these
Induced steam jet draught
Chimney draught
Forced steam jet draught
None of these
Blading efficiency
Nozzle efficiency
Stage efficiency
Mechanical efficiency
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
I.P. = a × m + b
m = a + b × I.P.
I.P. = b × m + a
m = (b/I.P.) - a
The critical pressure gives the velocity of steam at the throat equal to the velocity of sound.
The flow in the convergent portion of the nozzle is subsonic.
The flow in the divergent portion of the nozzle is supersonic.
To increase the velocity of steam above sonic velocity (supersonic) by expanding steam below the critical pressure, the divergent portion for the nozzle is not necessary.
Induced draft fan and chimney
Induced draft fan and forced draft fan
Forced draft fan and chimney
Any one of the above
Cornish is fire tube and Lancashire is water tube
Cornish is water tube and Lancashire is fire tube
Cornish has two fire tubes and Lancashire has one
Lancashire has two fire tubes and Cornish has one
High pressure and a low velocity
High pressure and a high velocity
Low pressure and a low velocity
Low pressure and a high velocity
No heat drop in moving blades
No heat drop in fixed blades
Maximum heat drop in moving blades
Maximum heat drop in fixed blades
One-fourth
One-third
Two-fifth
One-half
Stage efficiency
Internal efficiency
Rankine efficiency
None of these
Slow speed engine
Medium speed steam engine
High speed steam engine
None of these
One half
One third
One fourth
One fifth
Boiler drums
Superheater tubes
Economiser
A separate coil located in convection path.
CO₂
CO
O₂
N₂
Less efficient and less economical
Less efficient and more economical
More efficient and less economical
More efficient and more economical
Isothermal process
Isentropic process
Throttling process
Free expansion process