Boiler Operation Engineer Previous year Questions With Answer Set - 22
1. Stack heat losses can be minimised by __________
a) using low c.v. fuels
b) controlling the excess air
c) oxygen enrichment of combustion air
d) maintaining proper draft in the furnace
Ans. b
2. Natural draught produced by a chimney depends upon __________
a) density of chimney gases
b) height of chimney
c) both ‘density of chimney gases’ and ‘height of chimney’
d) none of the mentioned
Ans. c
3. Which of the following types of the fans has the highest cost?
a) centrifugal fans
b) axial fans
c) primary fans
d) gas recirculation fans
Ans. b
4. Which of these is not a type of drive of variable speed control?
a) variable speed turbine
b) hydraulic coupling
c) multiple speed ac motor
d) electronically adjustable turbine drive
Ans. d
5. In a furnace employing forced draught compared to induced draught __________
a) the fan operates hot and hence blades are liable to corrosion and erosion
b) positive pressure exists in the furnace
c) air is sucked in, so air leaks are more and hence furnace efficiency is reduced
d) none of the mentioned
Ans. c
6. Which of these accentuates clinkering trouble on furnace grate burning coal?
a) low reactivity of carbonised residue containing high proportions of iron and sulphur
b) low forced draught and low fuel bed temperature
c) thick fire bed and preheated primary air
d) all of the mentioned
Ans. d
7. Which of these is not a type of mechanical draft system for a furnace?
a) balanced draft
b) induced draft
c) forced draft
d) actuated draft
Ans. d
8. The draught or pressure difference for a chimney of height of H metres is given by?
a) Δp = gH(ρa-ρg)
b) Δp = gH(ρg-ρa)
c) Δp = gHρg
d) Δp = gH(ρa+ρg)
Ans. a
9. Which of these terms defines the pressure difference in the furnace?
a) draught
b) duct
c) stack
d) chimney
Ans. a
Boiler Objectives Questions :
BOE (Boiler Operation Engineer) Previous Year Exam Questions And Answers Set - 18
Boiler Operation Engineer (BOE) Previous Year Exam Questions And Answers Set - 19
Boiler Operation (BOE) Previous Year Multiple Choice Questions With Answer Set - 20
Boiler Operation Engineer (BOE) Previous Year Questions With Answer - 21
Boiler Interview Questions :
What are the factors which affect the Natural circulation ?
What is the difference between Tower type and Two pass conventional boiler?
What parameters are measured during Boiler PG test ?
Why the start up vent is used in Boilers?
List out the potential reasons for boiler tubes failure ?
What is cold end corrosion in boiler and When it occurs ?
What is the circulation number in boiler ?
Most Important Steam Blowing Questions Asked In Central BOE Interview
How it is been decided that RHS or LHS safety valve of steam drum is set at higher pressure ?
Why economiser is kept at the top of the boiler ?
How do you identify the leakage of economiser tube
Can the blades of FD fan be replaced by the ID fan blades?
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