BOE (BOILER OPERATION ENGINEER ) SHORT TYPE QUESTION ANSWER-5 FOR EXAMINATION - ASKPOWERPLANT
BOE (BOILER OPERATION ENGINEER ) SHORT TYPE QUESTION ANSWER-5 FOR EXAMINATION
BOILER MULTIPLE TYPE QUESTION AND ANSWER
1

BOE (BOILER OPERATION ENGINEER ) SHORT TYPE QUESTION ANSWER-5 FOR EXAMINATION

1. In water tube boiler
a. Water passes through the tubes which are surrounding by flames and gases
b. The flames are hot gases pass through the tubes which are surrounding by water.
c. Forced circulation take place
d. None of the above

2. The object of producing draft in a boiler is
a. To provide the adequate supply of air for the fuel combustion.
b. To exhaust the gases of combustion from the combustion chamber
c. To discharge the gases of combustion to the atmosphere through the chimney
d. All of the above

3. In a glass tube type water indicator for a boiler, one end of the tube is connected to the water space and other end is connected to
a. Water space also
b. Chimney
c. Steam space
d. Superheater

4. Which of the following statment is wrong ?
a. Locomotive boiler is a water tube boiler
b. Water tube boiler are internally fired
c. La- mont boiler is a low pressure water tube boiler
d. All the above

5.The natural draught is produces by
a. Steam jet
b. Centrifugal fan
c.chimney
d. Both a & b

6. A safety valve usually employed with stationary boiler is
a. Lever safety valve
b. Dead weight safety valve
c. High steam and low water safety valve
d. All of these

7. The chimney draught varies with
a. Climatic conditions
b. Temperature of furnace gases
c. Height of chimney
d. All of the above

8. The performance of boiler is measured by the
a. Amount of water evaporated per hours
b. Steam produces in kg/hr
c. Steam produces in kg/kg of fuel burnt
d. All of the above

9. The maximum heat loss in a boiler occurs due to
a. Moisture in fuel
b. Dry flue gases
c. Steam formation
d. Unbrunt carbon

10. Which of the following is not a boiler mounting ?
a. Blow off cock
b. Feed check valve
c. Economiser
d. Fusible plug

11. Which of the following are the boiler accessories ?
a. Economiser
b. Superheater
c. Both a & b
d. None of theses

12. The ability of material to resist softening at high temperature is known as
a. Creep
b. Hot tempering
c. Hot hardness
d. Fatigue

13. Killed steels are those steels
a. Which are destroyed by burning
b. Which after their destruction are recycled to produces fresh steel
c. Which are de oxidised in the ladle with silicon and aluminum
d. In which carbon is completely burn

14. Corrosion resistance of steel is increased by addition of
a. Chromium and nickel
b. Sulphur, phosphorus and lead
c. Vanadium and aluminum
d. Chromium , molybdenum, vanadium and tungsten

15. Manganese in steel increase it’s
a. Tensile strength
b. Hardness
c. Ductility
d. Malleability

16. Brinell hardness tester uses a steel ball of size
a. 5 mm
b. 10 mm
c. 15 mm
d. Both a & b

17. In arc welding, eyes need to be protected against
a. Intense glare
b. Sparks
c. Infra red rays
d. Infra red and ultraviolet rays

18. The gases used in tungsten inert gas welding are
a. Hydrogen and oxygen
b. Hydrogen and co2
c. Argon and neon
d. Argon and helium

19. In resistance welding, voltage used for heating is
a. 1 v
b. 10 v
c. 100 v
d. 440 v

20. Seam welding is
a. Multi spot welding process
b. Continues spot welding process
c. Used to form mesh
d. Used for welding cylindrical objects

POWER PLANT QUESTION ANSWERS

21. Generally water pipe lines are designed with water velocity
a. <1 m/s
b. Upto 2.0 m/s
c. > 2 m/s
d. None of the above

22. In indirect steam heating, the heat utilised for heating application
a. Sensible heat
b. Latent heat
c. Specific heat
d. None of the above

23. Orsat meter is used for
a. Gravimetric analysis of flue gas
b. Volumetric analysis of flue gas
c. Mass flow of the flue gas
d. Measuring smoke density of flue gas

24. Sulphur content of fuel is very important to the plant operator beacuse it
a. Has high heating value
b. Retards electrical precipitation
c. Promote complete combustion
d. Has high corrosive effect

25. Name the fan more suitable for high pressure application
a. Propeller type fan
b. Tube axial fan
c. Backward curved centrifugal fan
d. None of the above

26. Turndown ratio of a burners is the ratio of
a. Air to fuel
b. Maximum fuel input to actual fuel input
c. Maximum fuel input to minimum air input
d. Maximum air input to minimum air input

27. ESP works on the principal of
a. Corona effect
b. Induction effect
c. Skin effect
d. None of the above

28. A solution having 4 ph is more acidic than a solution of 7 ph
a. 03 times
b. 30 times
c. 100 times
d. 1000 times

29. Demineralisation of water is the process to remove
a. Dissolved oxygen
b. Dissolved salts
c. Carbon dioxide
d. Chloride

30. A rise in conductivity in boiler feed water indicate
a. Drop in contaminants of feed water
b. Greater purity of feed water
c. Rise in contamination of feed water
d. Has no relation with contamination of feed water

 

POWER PLANT QUESTION ANSWERS

 

 

 

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