225.65 kgf/ cm²
273 kgf/ cm²
100 kgf/ cm²
1 kgf/ cm²
A. 225.65 kgf/ cm²
LaMont boiler
Lancashire boiler
Velox boiler
Benson boiler
Locomotive boiler
Lancashire boiler
Cornish boiler
Babcock and Wilcox boiler
One
Two
Three
Four
Ratio of thermal efficiency to the Rankine efficiency
Ratio of brake power to the indicated power
Ratio of heat equivalent to indicated power to the energy supplied in steam
Product of thermal efficiency and Rankine efficiency
More
Less
Equal
None of these
Area of the actual indicator diagram to the area of theoretical indicator diagram
Actual workdone per stroke to the theoretical workdone per stroke
Actual mean effective pressure to the theoretical mean effective pressure
Any one of the above
Temperature, time, and turbulence
Total air, true fuel, and turbulence
Thorough mixing, total air and temperature
Total air, time, and temperature
Flue gases pass through tubes and water around it
Water passes through the tubes and flue gases around it
Work is done during adiabatic expansion
Change in enthalpy
Latent heat is zero
Liquid directly becomes steam
Specific volume of steam and liquid is same
This is the maximum pressure limit
Stationary < fire tube type
Horizontal type
Natural circulation type
All of the above
Convection
Radiation
Conduction
Radiation and conduction
Before the economiser
Before the superheater
Between the economiser and chimney
None of these
Steam turbine
Steam condenser
Mercury boiler
All of these
Divergent nozzle
Convergent nozzle
Convergent-divergent nozzle
None of these
Wet steam
Saturated steam
Superheated steam
Cushion steam
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
Melting point rises slightly and boiling point drops markedly
Melting point rises markedly and boiling point drops markedly
Melting point drops slightly and boiling point drops markedly
Melting point drops slightly and boiling point drops slightly
Feed pump
Injector
Feed check valve
Pressure gauge
Increases the mean effective pressure
Increases the workdone
Decreases the efficiency of the engine
All of these
Higher effectiveness of boiler
High calorific value coal being burnt
Fouling of heat transfer surfaces
Raising of steam temperature
pa = pm/K
pa = pm × K
pa = K/pm
pa = pm + K
As an impulsive force
As a reaction force
Partly as an impulsive force and partly as a reaction force
None of the above
Remain unaffected
Improve
Worsen
May improve/worsen depending on size
60°
90°
180°
270°
Anthracite coal
Bituminous coal
Lignite
Peat
Area of nozzle at throat
Initial pressure and volume of steam
Final pressure of steam leaving the nozzle
Both (A) and (B)
Low
Moderate
High
None of these
Multi tubular
Horizontal
Internally fired
All of the above
40 percent
50 percent
60 percent
70 percent
1.5 to 2 m
2.5 to 3.5 m
3.5 to 4.5 m
None of these