79 m/s
188 m/s
450 m/s
900 m/s
C. 450 m/s
Volume of intake steam
Pressure of intake steam
Temperature of intake steam
All of these
Equal
Half
Double
Four times
Indicated power
Brake power
Frictional power
None of these
Bleeding
Reheating
Governing
None of these
Has high heating value
Retards electric precipitation
Promotes complete combustion
Has highly corrosive effect
Increases
Decreases
Remain unaffected
First increases and then decreases
Have common piston rod
Are set at 90°
Have separate piston rods
Are set in V-arrangement
A fire tube boiler occupies less space than a water tube boiler, for a given power.
Steam at a high pressure and in large quantities can be produced with a simple vertical boiler.
A simple vertical boiler has one fire tube.
All of the above
Cut-off ratio
Expansion ratio
Clearance ratio
None of these
Maximum
Minimum
Zero
Depends on temperature also
One-half
One-third
Two-fourth
Two-fifth
Isothermal process
Isentropic process
Throttling process
Free expansion process
Stationary fire tube boiler
Stationary water tube boiler
Water tube boiler with natural/forced circulation
Mobile fire tube boiler
One half
One third
One fourth
One fifth
Moisture in fuel
Dry flue gases
Steam formation
Unburnt carbon
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
Drooping characteristic
Linear characteristic
Rising characteristic
Flat characteristic
Horizontal
Vertical
Inclined
None of these
225.65 kgf/ cm²
273 kgf/ cm²
100 kgf/ cm²
1 kgf/ cm²
Large marine propulsion
Electric power generation
Direct drive of fans, compressors, pumps
All of these
Internally fired boiler
Externally fired boiler
Natural circulation boiler
Forced circulation boiler
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
Heat energy of steam into kinetic energy
Kinetic energy into heat energy of steam
Heat energy of steam into potential energy
Potential energy into heat energy of steam
Receiver type
Tandem type
Woolf type
All of these
Last superheater or reheater and air preheater
Induced draft fan and forced draft fan
Air preheater and chimney
None of the above
13 mm
31 mm
130 mm
230 mm
Increases
Decreases
Remains unchanged
Increases/decreases depending on steam temperature requirements
Water level indicator
Pressure gauge
Safety valve
All of these
Receiver type compound engine
Tandem type compound engine
Woolf type compound engine
None of these
Horizontal multi-tubular water tube boiler
Water wall enclosed furnace type
Vertical tubular fire tube type
Horizontal multi-tubular fire tube type