Receiver type compound engine
Tandem type compound engine
Woolf type compound engine
None of these
B. Tandem type compound engine
Constant volume flow
Constant pressure flow
Isothermal flow
Isentropic flow
Have common piston rod
Are set at 90°
Have separate piston rods
Are set in V-arrangement
Gravimetric analysis of the flue gases
Volumetric analysis of the flue gases
Mass flow of the flue gases
Measuring smoke density of flue gases
200-400 kcal/ kg
800-1200 kcal/ kg
2000-4000 kcal/ kg
5000-8000 kcal/ kg
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
6.25 mm
62.5 mm
72.5 mm
92.5 mm
Maximum
Minimum
Zero
Depends on temperature also
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
ηS = ηB × ηN
ηS = ηB / ηN
ηS = ηN / ηB
None of these
Cut-off ratio
Expansion ratio
Clearance ratio
None of these
Remain same
Increases
Decreases
Behaves unpredictably
Vb = 0.5 V cosα
Vb = V cosα
Vb = 0.5 V² cosα
Vb = V² cosα
Reheat factor
Stage efficiency
Internal efficiency
Rankine efficiency
Cement industry
Thermal power plant
Blast furnace
Domestic use
Does not change
Increases
Decreases
None of these
Same value
Higher value
Lower value
Lower/higher depending on steam flow
Regeneration
Reheating of steam
Both (A) and (B)
Cooling of steam
Lancashire boiler
Locomotive boiler
Babcock and Wilcox boiler
Benson boiler
One-half the height of chimney
Equal to the height of chimney
Two times the height of chimney
Four times the height of chimney
Prevent the bulging of flat surfaces
Avoid explosion in furnace
Prevent leakage of hot flue gases
Support furnace freely from top
At the entrance to the nozzle
At the throat of the nozzle
In the convergent portion of the nozzle
In the divergent portion of the nozzle
Mechanical efficiency
Overall efficiency
Indicated thermal efficiency
Brake thermal efficiency
Workdone on the blades to the energy supplied to the blades
Workdone on the blades per kg of steam to the total energy supplied per stage per kg of steam
Energy supplied to the blades per kg of steam to the total energy supplied per stage per kg of steam
None of the above
Pressure only
Temperature only
Dryness fraction only
Pressure and dryness fraction
Cochran boiler
Cornish boiler
Lancashire boiler
Locomotive boiler
40 %
50 %
75 %
90 %
Condenser efficiency
Vacuum efficiency
Nozzle efficiency
Boiler efficiency
High burning rate is possible
Heat release can be easily controlled
Fuel burns economically
It is the best technique for burning high ash content fuel having low fusion ash
Horizontal straight line
Vertical straight line
Straight inclined line
Curved line
Various chemical constituents, carbon, hydrogen, oxygen etc, plus ash as percents by volume
Various chemical constituents, carbon, hydrogen, oxygen, etc, plus ash as percents by weight
Fuel constituents as percents by volume of moisture, volatile, fixed carbon and ash
Fuel constituents as percents by weight of moisture, volatile, fixed carbon and ash