Related Questions

Minimum thermal efficiency of a steam boiler may be around __________ percent
A 25
B 45
C 65
D 20
A _________ in a boiler is used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit.
A Blow off cock
B Fusible plug
C Stop valve
D Safety valve
Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity?
A CO2
B N2
C O2
D CO
Thermal efficiency of a limestone calcination rotary kiln may be around __________ percent.
A 20
B 40
C 65
D 80
The thermal efficiency of an air/fuel gas preheating recuperator may be as high as __________ percent.
A 50
B 65
C 85
D 99
The thermal efficiency of a steel slab reheating furnace (walking beam type) may be about __________ percent.
A 15
B 40
C 70
D 85
Thermal efficiency of blast furnace stoves used for heating blast (air) may be about __________ percent.
A 20
B 40
C 60
D 80
Thermal efficiency of well maintained boiler will be of the order
A 40%
B 50%
C 75%
D 90%
The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the __________ of a boiler.
A Evaporative capacity
B Evaporation efficiency
C Thermal efficiency
D Steam load
There is a certain pressure ratio (optimum) for a gas turbine at which its thermal efficiency is maximum. With increase in turbine temperature, the value of pressure ratio for the peak efficiency would
A Remain same
B Decrease
C Increase
D None of the above

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