Area of nozzle at throat
Initial pressure and volume of steam
Final pressure of steam leaving the nozzle
Both (A) and (B)
D. Both (A) and (B)
6.25 mm
62.5 mm
72.5 mm
92.5 mm
Does not change
Increases
Decreases
None of these
Longitudinally
Circumferentially
On dished end
Anywhere
Horizontal
Vertical
Inclined
Both horizontal and vertical
Former occupies less space for same power
Rate of steam flow is more in former case
Former is used for high installed capacity
Chances of explosion are less in former case.
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
Barometric pressure + actual pressure
Barometric pressure - actual pressure
Gauge pressure + atmospheric pressure
Gauge pressure - atmospheric pressure
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
24 m
35 m
57.5 m
79 m
Swept volume to the volume at cut-off
Clearance volume to the swept volume
Volume at cut-off to the swept volume
Swept volume to the clearance volume
The power required and working pressure
The geographical position of the power house
The fuel and water available
All of the above
One fourth
Half
One
Two
1 kg/cm²
5 kg/cm²
10 kg/cm²
18 kg/cm²
Flue gases pass through tubes and water around it
Water passes through the tubes and flue gases around it
Forced circulation takes place
Tubes are laid vertically
Solid and vapour phases are in equilibrium
Solid and liquid phases are in equilibrium
Liquid and vapour phases are in equilibrium
Solid, liquid and vapour phases are in equilibrium
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
Enthalpy
Superheating
Super saturation
Latent heat
Constant volume flow
Constant pressure flow
Isothermal flow
Isentropic flow
Ash
Volatile matter
Moisture
Hydrogen
Zero
Minimum
Maximum
None of these
Give maximum space
Give maximum strength
Withstand pressure inside boiler
Resist intense heat in fire box
Increases the mean effective pressure
Increases the workdone
Decreases the efficiency of the engine
All of these
21 %
23 %
30 %
40 %
0.5 to 1 m
1 to 2 m
1.25 to 2.5 m
2 to 3 m
Horizontal multi-tubular water tube boiler
Water wall enclosed furnace type
Vertical tubular fire tube type
Horizontal multi-tubular fire tube type
CO₂
CO
O₂
N₂
Has no effect on
Decreases
Increases
None of these
To give maximum space and strength
To withstand the pressure of steam inside the boiler
Both (A) and (B)
None of the above
Increased work output per unit mass of steam
Decreased work output per unit mass of steam
Increased thermal efficiency
Decreased work output per unit mass of steam as well as increased thermal efficiency
0.18 MN/m²
1.8 MN/m²
18 MN/m²
180 MN/m²