Does not change
Increases
Decreases
None of these
C. Decreases
10 atmospheres
20 atmospheres
30 atmospheres
40 atmospheres
Side by side and each cylinder has common piston, connecting rod and crank
Side by side and each cylinder has separate piston, connecting rod and crank
At 90° and each cylinder has common piston, connecting rod and crank
At 90° and each cylinder has separate piston, connecting rod and crank
Blow off cock
Fusible plug
Stop valve
Safety valve
Supply of excess, air
Supply of excess coal
Burning CO and unburnts in upper zone of furnace by supplying more air
Fuel bed firing
Superheater
Air-preheater
Economiser
Injector
Lancashire boiler
Locomotive boiler
Babcock and Wilcox boiler
Benson boiler
180° to each other
90° to each other
0° to each other
None of these
21 %
23 %
30 %
40 %
12 m
1.52.5 m
23 m
2.53.5 m
Steam jet
Centrifugal fan
Chimney
Both (A) and (B)
Increases
Decreases
Remain same
None of these
Constant volume
Constant temperature
Constant pressure
Constant entropy
Vb = 0.5 V cosα
Vb = V cos α
Vb = 0.5 V² cosα
Vb = V² cosα
Internally fired
Externally fired
Internally as well as externally fired
None of these
Entropy
Enthalpy
Pressure
Temperature
Pulverised fuel fired boiler
Cochran boiler
Lancashire boiler
Babcock and Wilcox boiler
1000 J
360 kJ
3600 kJ
3600 kW/sec
A horizontal steam engine requires less floor area than a vertical steam engine
The steam pressure in the cylinder is not allowed to fall below the atmospheric pressure
The compound steam engines are generally non-condensing steam engines
All of the above
Complete account of heat supplied by 1 kg of dry fuel and the heat consumed
Moisture present in the fuel
Steam formed by combustion of hydrogen per kg of fuel
All of the above
Corroding air heaters
Spontaneous combustion during coal storage
Facilitating ash precipitation
All of the above
And its corresponding conversion into dry saturated steam at 100°C and 1.033 kg/cm²
And its corresponding conversion into dry steam at desired boiler pressure
Conversion into steam at atmospheric condition
Conversion into steam at the same pressure at which feed water is supplied
5 to 6 m
6 to 7 m
7.25 to 9 m
9 to 10 m
0.007 bar
0.053 bar
0.06 bar
0.067 bar
Supplied by same manufacturer loose and assembled at site
Supplied mounted on a single base
Purchased from several parties and packed together at site
Packaged boiler does not exist
To provide an adequate supply of air for the fuel combustion
To exhaust the gases of combustion from the combustion chamber
To discharge the gases of combustion to the atmosphere through the chimney
All of the above
From a metal wall from one medium to another
From heating an intermediate material and then heating the air from this material
By direct mixing
Heat is transferred by bleeding some gas from furnace
0.5 to 10 MN/m²
1 to 15 MN/m²
2.5 to 15 MN/m²
3.5 to 20 MN/m²
Carnot cycle
Rankine cycle
Joule cycle
Stirling cycle
Boiler drums
Superheater tubes
Economiser
A separate coil located in convection path.
Carnot cycle
Joule cycle
Stirling cycle
Brayton cycle