0.17 MN/m²
1.7 MN/m²
17 MN/m²
170 MN/m²
B. 1.7 MN/m²
Boil
Flash i.e. get converted into steam
Remain as it was
Cool down
50°C and normal atmospheric pressure
50°C and 1.1 bar pressure
100°C and normal atmospheric pressure
100°C and 1.1 bar pressure
The efficiency of steam turbines is greater than steam engines
A flywheel is a must for steam turbine
The turbine blades do not change the direction of steam issuing from the nozzle
The pressure of steam, in reaction turbines, is increased in fixed blades as well as in moving blades
Evaporative capacity
Factor of evaporation
Equivalent evaporation
One boiler h.p.
The draft to be created
Limitation of construction facilities
Control of pollution
Quantity of flue gases to be handled
High pressure and a low velocity
High pressure and a high velocity
Low pressure and a low velocity
Low pressure and a high velocity
Equal to Carnot cycle
Less than Carnot cycle
More than Carnot cycle
Could be anything
(p₂/p₁) = [2/(n - 1)] n/(n + 1)
(p₂/p₁) = [2/(n + 1)] n/(n-1)
(p₂/p₁) = [(n - 1)/2] n + (1/n)
(p₂/p₁) = [(n + 1)/2] n - (1/n)
Slow speed engine
Medium speed steam engine
High speed steam engine
None of these
Decreasing initial steam pressure and temperature
Increasing exhaust pressure
Decreasing exhausts pressure
Increasing the expansion ratio
ηS = ηB × ηN
ηS = ηB / ηN
ηS = ηN / ηB
None of these
Cochran boiler
Cornish boiler
Lancashire boiler
Locomotive boiler
Evaporative capacity of a boiler
Equivalent evaporation from and at 100° C
Boiler efficiency
None of these
Superheater
Air-preheater
Economiser
Injector
9.81 Joules
102 Joules
427 Joules
None of these
Remains constant
Increases
Decreases
Behaves unpredictably
75
115
165
225
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
It has heating value
It helps in electrostatic precipitation of ash in flue gases
It leads to corrosion of air heaters, ducting, etc. if flue gas exit temperature is low
It erodes furnace walls
Pressure alone
Temperature alone
Pressure and temperature
Pressure and dryness fraction
Condenser efficiency
Nozzle efficiency
Boiler efficiency
Vacuum efficiency
1 to 1.25m
1 to 1.75 m
2 to 4 m
1.75 to 2.75 m.
LaMont boiler
Lancashire boiler
Velox boiler
Benson boiler
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
Volume
Pressure
Entropy
Enthalpy
To reduce the ratio of expansion in each cylinder
To reduce the length of stroke
To reduce the temperature range in each cylinder
All of the above
When the cross-section of the nozzle increases continuously from entrance to exit
When the cross-section of the nozzle decreases continuously from entrance to exit
When the cross-section of the nozzle first decreases from entrance to throat and then increases from its throat to exit
None of the above
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
Pulverised fuel fired boiler
Cochran boiler
Lancashire boiler
Babcock and Wilcox boiler
Zero
Minimum
Maximum
None of these