Decrease the mass flow rate and to increase the wetness of steam
Increase the mass flow rate and to increase the exit temperature
Decrease the mass flow rate and to decrease the wetness of steam
Increase the exit temperature without any effect on mass flow rate
C. Decrease the mass flow rate and to decrease the wetness of steam
Remains the same
Increases
Decreases
Is unpredictable
13 mm
31 mm
130 mm
230 mm
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
Have common piston rod
Are set at 90°
Have separate piston rods
Are set in V-arrangement
Steam temperature remains constant
Steam pressure remains constant
Steam enthalpy remains constant
Steam entropy remains constant
Keep the burner tips cool
Aid in proper combustion
Because sputtering, possibly extinguishing flame
Clean the nozzles
1 kg/cm
6 kg/cm
17 kg/cm²
100 kg/cm²
Evaporative capacity
Factor of evaporation
Equivalent evaporation
One boiler h.p.
V = 44.72 hd K
V = 44.72 K hd
V = 44.72 K hd
V = 44.72 K hd
Constant volume
Constant temperature
Constant pressure
Constant entropy
Bleeding
Reheating
Governing
None of these
The steam is admitted on one side of the piston and one working stroke is produced during each revolution of the crankshaft
The steam is admitted, in turn, on both sides of the piston and one working stroke is produced during each revolution of the crankshaft
The steam is admitted on one side of the piston and two working strokes are produced during each revolution of the crankshaft
The steam is admitted, in turn, on both sides of the piston and two working strokes are produced during each revolution of the crankshaft
Internally fired boiler
Externally fired boiler
Natural circulation boiler
Forced circulation boiler
Latent heat is zero
Liquid directly becomes steam
Specific volume of steam and liquid is same
This is the maximum pressure limit
Condenser efficiency
Vacuum efficiency
Nozzle efficiency
Boiler efficiency
Slow speed engine
Vertical steam engine
Condensing steam engine
Non-condensing steam engine
Chimney
Centrifugal fan
Steam jet
None of these
One
Two
Three
Four
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
Blow off cock
Fusible plug
Superheater
Stop valve
More
Less
Equal
May be more or less depending on capacity of reheater
Water space also
Chimney
Steam space
Superheater
Producer gas
Coal gas
Water gas
Blast furnace gas
Wholly in blades
Wholly in nozzle
Partly in the nozzle and partly in blades
None of these
Supply of excess, air
Supply of excess coal
Burning CO and unburnts in upper zone of furnace by supplying more air
Fuel bed firing
Higher effectiveness of boiler
High calorific value coal being burnt
Fouling of heat transfer surfaces
Raising of steam temperature
Amount of water evaporated per hour
Steam produced in kg/h
Steam produced in kg/kg of fuel burnt
All of these
Efficiency of the boiler
Efficiency of the chimney
Efficiency of the fan
Power of the boiler
Same
Less
More
None of these
Essentially an isentropic process
Non-heat transfer process
Reversible process
Constant temperature process