Assessment Test

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1. C3 - A diesel engine cooling water system with has pH of 3.0? What does this indicates?

 

2. C3 - How can you reduce the formation of carbon monoxide in diesel exhaust gases?

 

3. C3 - Which of the listed components is used to protect the boiler superheater against the radiant heat of the furnace?

 

4. C3 - For equal amounts of fuel injected, what change in condition will have the greatest effect on the mean effective pressure in the cylinder of a diesel engine?

 

5. C3 - Which of the following statement is true concerning the main diesel engine oil cooler?

 

6. C3 - What will happen to R-12 refrigerant system when there is an increased in heat load?

 

7. C3 - Under normal operating conditions of constant load and combustion rates, which of the following will occur when the amount of excess air to the furnace is increased?

 

8. C3 - Why should an exhaust gas bypass installed on a waste heat boiler?

 

9. C3 - What is the use of engine indicator on a diesel engine?

 

10. C3 - What is the purpose of sacrificial zinc anodes used on the salt water side of diesel engine heat exchangers?

 

11. C3 - What is the importance of an oil mist detector in a main propulsion diesel engine?

 

12. C3 - What influenced the rate of pressure rise in a diesel engine cylinder following fuel injection and ignition?

 

13. C3 - The greatest deterrent to heat transfer from the fireside to the waterside of a boiler is _________.

 

14. C3 - The formation of a pit in a boiler tube is most likely to occur when _________.

 

15. C3 - The most rapid period of fuel combustion occurring in a diesel cylinder should begin just before the piston reaches top dead center and ___________.

 

16. C3 - Which of the following factors tends to increase scale formation on the saltwater side of a heat exchanger used in a diesel engine cooling water system?

 

17. C3 - Which of the following statement is true concerning the main diesel engine oil cooler?

 

18. C3 - Why are removable sleeves installed on centrifugal pump shafts?

 

19. C3 - The speed of a radial piston hydraulic motor is controlled by varying the _________.

 

20. C3 - The function of the hydraulic telemotor transmitter used in an electro-hydraulic steering gear system is to______________ .

 

21. C3 - To maintain the design discharge pressure of a centrifugal pump, the clearance between the _____________.

 

22. Why are removable sleeves installed on centrifugal pump shafts?

 
 

23. C3 - Which of the precautions listed should be taken prior to blowing down a boiler water wall header?

 

24. C3 - The most rapid period of fuel combustion and cylinder pressure increase in a diesel engine should begin just before the piston reaches top dead center and completed when?

 

25. C3 - What is the condition of a crankshaft whose center of gravity coincides with its center line?

 


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