Lamont boiler
Benson boiler
Loeffler boiler
All of these
D. All of these
One-fourth
One-third
Two-fifth
One-half
Increases
Decreases
Remains constant
None of these
Low
Very low
High
Very high
47.5 mm, 130 mm
32.5 mm, 180 mm
65.5 mm, 210 mm
24.5 mm, 65 mm
Zeroth law of thermodynamics
First law of thermodynamics
Second law of thermodynamics
None of these
225.65 kgf/ cm²
273 kgf/ cm²
100 kgf/ cm²
1 kgf/ cm²
Reduce hardness and for removal of solids
Increase efficiency of thermal power plant
Increase heat transfer rate
Increase steam parameters
Internally fired
Externally fired
Internally as well as externally fired
None of these
Work done during the Rankine cycle
Work done during compression
Work done during adiabatic expansion
Change in enthalpy
Boiler drums
Superheater tubes
Economiser
A separate coil located in convection path.
Same
Less
More
None of these
Equal
Less
More
None of these
100 kg/cm² and 540°C
1 kg/cm² and 100°C
218 kg/cm² abs and 373°C
218 kg/cm² abs and 540°C
1.5 m, 4 m
1.5 m, 6 m
1 m, 4 m
2 m, 4 m
0.1 kg/cm²
1 kg/cm²
100 kg/cm²
225.6 kg/cm²
Pressure drop across the rotor
Change in axial velocity
Both (A) and (B)
None of these
Last superheater or reheater and air preheater
Induced draft fan and forced draft fan
Air preheater and chimney
None of the above
Essentially an isentropic process
Non-heat transfer process
Reversible process
Constant temperature process
The factor of evaporation for all boilers is always greater than unity.
The amount of water evaporated in kg per kg of fuel burnt is called equivalent evaporation from and at 100° C.
The ratio of heat actually used in producing the steam to the heat liberated in the furnace is called boiler efficiency.
None of the above
No heat drop in moving blades
No heat drop in fixed blades
Maximum heat drop in moving blades
Maximum heat drop in fixed blades
Horizontal
Vertical
Inclined
Horizontal and inclined
Equal to unity
Less than unity
Greater than unity
None of these
One half
One third
One fourth
One fifth
78-81 %
81-85 %
85-90 %
90-95 %
Static
Dynamic
Static and dynamic
Neither static nor dynamic
Wet steam
Saturated steam
Superheated steam
Cushion steam
Bismuth
Copper
Aluminium
Nickel
Centrifugal pump
Axial flow pump
Gear pump
Reciprocating pump
Form lumps or masses of coke
Burn freely
Show little or no fusing action
Burn completely
Lancashire boiler
Locomotive boiler
Babcock and Wilcox boiler
Benson boiler