66
0:-3.1
Correct Answer:- Option-D
Question66:-Which fuel releases the most energy per kg on complete combustion 7
A:-Carbon
B:-Sulphur
C:-Hydrogen
D:-Nitrogen
Correct Answer:- Option-C
Question67:-How many kg of ` ` 0 (2)` are produced in complete combustion of 16 kg of Methane 7
A-42
B:-44
C:-16
D:-48
Correct Answer:- Option-B
Question68:-In flue gas the theoretical *CO_{2)" is 15.5% and measured * 00 (2)` 6 11% by volume. The percentage of
excess air will be

A:-40.90%
B:-90.90%
C:-240.90%
D:-140.90%
Correct Answer:- Option-A
Question69:-To drain condensate from main steam line, the following type of trap is a suitable trap
A:-Float
B:-Bimetallic
C:-Thermodynamic
D:-None of the above
Correct Answer:- Option-B
Question70:-With increase in the percentage of excess air for combustion of coal, percentage of *CO_(2)" in flue gas.
A:-Decreases
B:-Increases
C:-Remains same
D:-None of the above
Correct Answer:- Option-A
Question71:-The minimum capacity of any closed vessel which generates steam under pressure as per Indian Boilers
Regulation Act is
A:-2.275 litres
B:-22.75 kilo litres
C:-227.5 litres
D:-22.75 litres
Correct Answer:- Option-D
Question7 2:-If pressure of saturated steam increases then
A:-Enthalpy of steam goes up
B:-Enthalpy of steam goes down
C:-Enthalpy of evaporation goes up
D:-None of the above
Correct Answer:- Option-A
Question73:-Water treatment for steam boilers is generally required to
A:-Remove hydrogen
B:-Prevent formation of scales
C:-Help improve combustion efficiency
D:-Reduce stack temperature
Correct Answer:- Option-B
Question74:-The TDS level in boiler water for boiler blow down, is measured through
A:-Alkalinity of water
B:-Thermal conductivity of water
C:-Electrical conductivity of water
D:-Turbidity of water
Correct Answer:- Option-C