Seamless mild steel is used for steam (also copper for moderate pressure and temperature), h.pair, feed discharge and all oil fuel pressure pipingsAccording to the above sentence, which of the following statements is not true?
- A.Both seamless mild steel and copper may be used for middle pressure steam
- B."hpair" means high pressure air
- C.The feed piping of the boilers can be made of seamless mild steel
- D.All oil pipings are made of mild steel
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Defective air cooler in a diesel engine will lead to .
- A.smoky exhaust
- B.starting failure
- C.overload
- D.over speed
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While a ship with twin screw is making a turn, in order to prevent overload, the duty engineer should _____.
- A.reduce the fuel feeding of main engine of inner propeller
- B.reduce the fuel feeding of main engine of outer propeller
- C.firstly reduce the fuel of main engine of inner propeller, then reduce the fuel feeding of engine of outer propeller
- D.reduce fuel feeding of two engines at the same time
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The oil mist detectors continuously_____ the crankcase atmosphere, via a pipe system, and move it past a sensitive and accurate opacity measuring track.
- A.detract
- B.extract
- C.pump up
- D.pump down
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A fire, occurring in the windings, of an overloaded electrical motor, is considered a _____.
- A.class "A" fire
- B.class "B" fire
- C.class "C" fire
- D.class "D" fire
-
Due to the large amount of heat picked up by the air in boiler and engine rooms, it would be _____ to maintain ambient conditions within the comfort zone by air conditioning.
- A.possible
- B.necessary
- C.practicable
- D.impracticable
-
Engage the flywheel with the _____.
- A.turning gear
- B.motor
- C.driving gear
- D.driven gear
-
A lower thermostatic temperature setting will provide a desired degree of comfort in a room where _____.
- A.low relative humidity is maintained
- B.triple banded squirrel cage fans are used
- C.air circulation is a maximum
- D.high relative humidity is maintained
-
The design of for a flash type evaporator is of critical importance because it must provide an optimum feedwater spray pattern that facilitates the flashing process, and it must also maintain a pressure differential between successive stages.
- A.condenser
- B.flashing device
- C.lashing device
- D.vacuum pump
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After stopping oily water separator, sea water should be permitted for ___ minutes, ____ should be closed after stopping pump to reduce oxidation corrosion of inner wall.
- A.15 / inlet value
- B.15 / inlet and outlet value
- C.30 / inlet value
- D.30 / inlet and outlet value
-
While underway, which of the following would be the FIRST step in reversing a direct reversing large, low-speed, main propulsion, diesel engine?
- A.Manually trip the over-speed device
- B.Interrupt the fuel flow to the engine
- C.Disengage the safety interlock
- D.Slide the camshaft to the neutral position
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