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1. When a diesel engine is operated with a piston ring having a cold gap clearance less than that recommended by the manufacturer, the ring will __________.

 
 
 
 

2. The average exhaust temperature of a two-stroke/cycle diesel engine with a turbine-driven supercharger is lower than a similar four-stroke/cycle diesel engine at equal loads because __________.

 
 
 
 

3. In a two-stroke/cycle, opposed piston, diesel engine, the lower crankshaft operates several crankshaft degrees in advance of the upper crankshaft to __________.

 
 
 
 

4. Irregular engine speed in a diesel can be caused by __________.

 
 
 
 

5. A common method for diesel engine piston cooling is to deliver oil through the connecting rod into a void space in the piston head and then allow the piston motion to distribute the oil to cool the piston crown and drain the oil back to the crankcase. This procedure is known as the _____________ .

 
 
 
 

6. What would be the result of adding phosphate compounds into the cooling system of a diesel engine? I. Protect the coolant from freezing. II. Protect metallic surfaces from corrosion.

 
 
 
 

7. Which of the following precautions should be taken when cleaning the air filter on a diesel engine equipped with a turbocharger?

 
 
 
 

8. The pressure in an operating diesel engine cylinder continues to rise for a short period after the piston passes top dead center as a result of the __________.

 
 
 
 

9. In a diesel engine, maximum lube oil system pressure under cold start conditions is normally controlled by __________.

 
 
 
 

10. Which of the following conditions can cause above normal air temperature to develop in the intake manifold of a four-stroke/cycle, turbocharged, diesel engine?

 
 
 
 

11. A visual inspection of the chrome plated piston compression rings at the liner ports reveals vertical brown streaks on the face of the rings. This condition indicates __________.

 
 
 
 

12. The secondary function of a waste heat boiler is to __________.

 
 
 
 

13. On a four-cycle diesel engine, the valve subjected to the most severe conditions during normal service is the __________.

 
 
 
 

14. Fusible plugs are installed in fire-tube boilers to __________.

 
 
 
 

15. Friction developing between the moving parts of a governor, governor linkage and control valve will cause the governor to __________.

 
 
 
 

16. Which of the bearings listed are most widely used for the main and connecting rod bearings of a diesel engine?

 
 
 
 

17. Coast Guard Regulations (46 CFR) permit the use of drain valves for removing water or impurities from diesel engine fuel systems. These valves must be __________.

 
 
 
 

18. Which of the following methods is normally used to lubricate bearings in a small high-speed diesel engine?

 
 
 
 

19. A large change in ambient temperature, or using an oil of a viscosity different than the one recommended by the manufacturer in a mechanical hydraulic governor, will result in the need to adjust the __________.

 
 
 
 

20. Changing the position of the fulcrum in the compensating system of the governor will __________.

 
 
 
 

21. To check the setting of the over-speed trip on a diesel powered generator, you would use a __________.

 
 
 
 

22. Which of the following is an example of a solid bearing?

 
 
 
 

23. Coast Guard Regulations (46 CFR) require steel tubing connections and fittings used with diesel fuel oil systems, to be either flared or __________.

 
 
 
 

24. In an auxiliary diesel engine bypass-type lubricating oil system, the main lube oil pump forces __________.

 
 
 
 

25. In a bypass type filtering system for a medium or high speed diesel engine, the lube oil bypassing the filter __________.

 
 
 
 

26. Two important considerations for the proper lubrication of a diesel engine include, the delivery of the oil in sufficient amount, and the __________.

 
 
 
 

27. In a diesel engine, the main bearings are used between the __________.

 
 
 
 

28. The replacement piping for diesel engine high pressure fuel systems must be the same length and diameter as the original piping to __________.

 
 
 
 

29. Heat exchangers are most commonly found in a small auxiliary diesel engine __________.

 
 
 
 

30. Diesel engine jacket water is used in the fresh water distillation process as the __________.

 
 
 
 

31. Multiple concentric valve springs are often used with diesel engine valves to __________.

 
 
 
 

32. A controllable pitch propeller on a diesel driven vessel eliminates the need for __________.

 
 
 
 

33. When the prime movers of two paralleled generators are equipped with mechanical-hydraulic governors, and are operating within their designed range, the unit with the least amount of speed droop will __________.

 
 
 
 

34. Which of the listed bearing installations is subjected to swinging motion?

 
 
 
 

35. One advantage of a vacuum feed sight glass indicator used on cylinder lubricators over the discharge side liquid filled type sight glass is __________.

 
 
 
 

36. If the combustion control system of an automatically fired auxiliary boiler fails to sustain burner ignition after a normal shutdown, you should check for a/an __________.

 
 
 
 

37. The term 'PLAN/33,000' is equal to the __________.

 
 
 
 

38. Bearing 'crush' as applied to diesel engine main bearings, will result in __________.

 
 
 
 

39. Which of the listed types of gasket material should be used on high pressure fuel oil lines on a diesel engine?

 
 
 
 

40. Motor vessels usually have independent lube oil systems for main engine and main reduction gears because __________.

 
 
 
 

41. Clearance volume scavenging in a turbocharged, four-stroke/cycle diesel engine is accomplished __________.

 
 
 
 

42. Mist detectors used on large low-speed and medium speed main propulsion diesel engines monitor and check for the presence of __________.

 
 
 
 

43. A main propulsion diesel engine crankshaft bearing lacking sufficient 'crush', will __________.