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
A. The steam is admitted on one side of the piston and one working stroke is produced during each revolution of the crankshaft
More
Less
Same
Could be more or less depending on other factors
Internally fired
Externally fired
Internally as well as externally fired
None of these
Efficiency of the boiler
Efficiency of the chimney
Efficiency of the fan
Power of the boiler
Drooping characteristic
Linear characteristic
Rising characteristic
Flat characteristic
Cornish boiler is a water tube boiler whereas Lancashire boiler is a fire tube boiler
Cornish boiler is a fire tube boiler whereas Lancashire boiler is a water tube boiler
Cornish boiler has one flue tube whereas Lancashire boiler has two flue tubes
Cornish boiler has two flue tubes whereas Lancashire boiler has one flue tube
Stage efficiency
Internal efficiency
Rankine efficiency
None of these
Give maximum space
Give maximum strength
Withstand pressure inside boiler
Resist intense heat in fire box
Desirable
Economical
Essential
Uneconomical
Lancashire boiler
Babcock and Wilcox boiler
Locomotive boiler
Cochran boiler
100°C
Above dew point temperature of flue gases
Below dew point temperature of flue gases
Less than wet bulb temperature of flue gases
Centrifugal pump
Axial flow pump
Gear pump
Reciprocating pump
The steam is allowed to expand in the nozzle, where it gives a high velocity before it enters the moving blades
The expansion of steam takes place partly in the fixed blades and partly in the moving blades
The steam is expanded from a high pressure to a condenser pressure in one or more nozzles
The pressure and temperature of steam remains constant
To draw water
To circulate water
To drain off the water
All of these
Blading efficiency
Nozzle efficiency
Gross or stage efficiency
Mechanical efficiency
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
Does not change
Increases
Decreases
None of these
Wet steam
Saturated steam
Superheated steam
Cushion steam
Cut-off ratio
Expansion ratio
Clearance ratio
None of these
Condenser efficiency
Vacuum efficiency
Nozzle efficiency
Boiler efficiency
Boil
Flash i.e. get converted into steam
Remain as it was
Cool down
40 %
50 %
75 %
90 %
Essentially an isentropic process
Non-heat transfer process
Reversible process
Constant temperature process
Piston rod
Connecting rod
Eccentric rod
Valve rod
Maximum
Minimum
Zero
Depends on temperature also
Large marine propulsion
Electric power generation
Direct drive of fans, compressors, pumps
All of these
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
sin²α
cos²α
tan²α
cot²α
The ratio of heat actually used in producing the steam to the heat liberated in the furnace
The amount of water evaporated or steam produced in kg per kg of fuel burnt
The amount of water evaporated from and at 100° C into dry and saturated steam
The evaporation of 15.653 kg of water per hour from and at 100° C
T1 /88.25H
88.25H/T1
T1 /176.5H
176.5H/T1
Heat carried away by flue gases
Heat carried away by ash
Moisture present in fuel and steam formed by combustion of hydrogen in fuel
All of the above