EKM CH 4.0 BOILER | MEO 4 & 5

 MOTOR ENGINEERING KNOWLEDGE

MEO CLASS 4 & 5 COMBINED

Question Bank by DoS Bangladesh

4.0 BOILER

1. (a) State a safe procedure of raising steam from cold state of a boiler. (8) 

 (b) List four important mountings of an auxiliary boiler. (2) 

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 2. (a) State the reasons for boiler water level low. (4) 

 (b) What are actions to be taken in case of ‘boiler water level low’ alarm comes? (3) 

 (c) What are the indications of boiler tube leakage? (3) 

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 3. (a) Describe the reasons of feed water treatment. (4) 

 (b) State the reasons of any three important tests carried out on feed water of an auxiliary boiler. (6) 

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 4. With reference to an auxiliary boiler: (a) What are causes and actions to be taken in case of black smoke in the funnel? (5) 

 (b) Sketch & describe a rotary or pressure jet burner (5) 

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 5. (a) State the significance of maintaining boiler feed water temperature. (3) 

 (b) If feed water system observed with oil contamination, how to be remedied? (4) 

 (c) What are precautions to be taken to get rid of scale formation? (4)

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 6. With reference to an auxiliary boiler: (a) Explain the difference between fire tube and water tube boiler. (4) (b) What is the difference between saturated steam and superheated steam? (4) 

 (c) List the mountings that are normally fitted on a low pressure composite boiler. (2) 

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 7. (a) Sketch a vertical water tube auxiliary boiler & indicate all the important mountings (7)

(b) State the boiler water blow down procedure. (3) 

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8.(a) Sketch a vertical fire tube auxiliary boiler & indicate all the important mountings (7) 

 (b) With a sketch describe the boiler water level gauge glass blow down procedure. (3) 

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 9.(a) How boiler corrosion can be prevented? (3) 

 (b) What is caustic corrosion and pitting? (4) 

 (c) What are the actions to be taken if found water chloride level beyond the limit? (4) 

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 10.(a) Describe the procedure for complete blow down and depressurized of an auxiliary boiler. (7) 

 (b) What are the items to be checked in case of miss fire alarm comes during watch? (3)

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