BOE (BOILER OPERATION ENGINEER ) SHORT TYPE QUESTION ANSWER-2 FOR EXAMINATION - ASKPOWERPLANT
BOE (BOILER OPERATION ENGINEER ) SHORT TYPE QUESTION ANSWER-2 FOR EXAMINATION
BOILER MULTIPLE TYPE QUESTION AND ANSWER
1

BOE (BOILER OPERATION ENGINEER ) SHORT TYPE QUESTION ANSWER FOR EXAMINATION:-

1. In the modern boiler, for the flue gas flow, the correct sequence is
a. Boiler Air preheater economizer ID fan chimney
b. Boiler ID fan Air preheater Economizer Chimney
c. Boiler -Economizer- Air preheater -ID fan -Chimney
d. None of the above

2. Induced draft fans are used to
a. Cool the steam let out by the turbine in the thermal power station
b. Cool the hot gases coming out of boiler
c. Forces the air inside the coal furnace
d. Pull the gases out of furnace

3. In a AFBC boiler the size of coal used is
a. 1- 10 mm
b. 10 -100 mm
c. Less than 1 mm
d. 10 -20 inches

4. The indication to determine the incomplete combination is
a. High percentage of carbon dioxide content in the flue gases
b. High percentage of CO content in the flue gases
c. High temperature of flue gases
d. All the above

5. Economizer of boiler has main function of
a. Heat up the incoming water with excess steam
b. Heat up the pulverized fuel by exhaust gases
c. Heat up the incoming air by exhaust gases
d. Heat up the incoming water by exhaust gases

6. The steam power plant efficiency can be improve by
a. Using large quantity of water
b. Burning large quantity of coal
c. Using high temperature and pressure of steam
d. Decreasing the load on the plant

7. The size of boiler tube is specified
a. Outside diameter and inside diameter
b. Mean diameter and thickness
c. Outside diameter and thickness
d. Inside diameter and thickness

8. Blow down from the boiler drum is carried out to
a. Lower steam pressure
b. Increase steam pressure
c. Control the solids concentration in boiler water
d. All of the above

9. The material is used in water wall of boiler is
a. Carbon steel
b. Alloy steel
c. Stainless steel
d. None of the above

10. A system in which the boiler operates with a FD and ID fan is called
a. Natural draft
b. Forced draft
c. Induced draft
d. Balanced draft

11. The function of lime stone used as bed material FBC boiler is to remove
a. Ash
b. Sulphur and NOx
c.unbrunt
d. Sulphur

12. Stack heights in more than 200 MW but less than 500MW
1.120 mtr
b. 175 mtr
c. 220 mtr
d. 275 mtr

13. Environment (protection ) Amendment Rules, 2015, Thermal Power Plant ( units ) installation after 1st January,2003, upto 31st December,2016 Oxides of Nitrogen ( NOx ) should more than
a. 100 mg/Nm3
b. 300
c. 600
d. 900

14 The difference between mean solid and mean gas velocity in FBC boiler is called
a. Fluidization factor
b. Slip velocity
c. Setting velocity
d. None of the above

15. Rotameter is used to measurement of
a. Speed
b. Length
c. Flow
d. Time

16. In a FBC boiler the capture and recycling of bed material is accompanied by
a. Bag filter
b. Settling chamber
c. Cyclone
d. Scrubber system

17. In a single stage, high voltage ESP , the apllied voltage is increased until it produces
a. Extremely high alternating current for partical charging
b. Corona discharged , which can be seen as a blue glow around the discharge electrode
c. Corona spark that occurs at the collection electrode
d.All of the above

18. The efficiency of collection in ESP will ………..if the ESP inlet temperature increase.
a. Increase

b. Decrease
c .remains the same
d. First increase then decrease
19. In ESP , particals are usually charged by negative gas ions that are migrating toward the collection electrode (True) 
20. In ESP , large particals move more slowly toward the collection plate than small particles. ( False )

POWER PLANT QUESTION ANSWERS

 

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