GENERAL ENGINEERING KNOWLEDGE – MEO CLASS 4 MMD PAPER

SECTION – 8

1. When air at a given temperature, contains the maximum amount of moisture for that temperature, the air is said to be

A. superheated
B. saturated
C. condensing
D. evaporating

ANS.: B

2.Which of the following form of Inert Gas is not used on gas carriers?

A. Inert gas from combustion type generators.
B. Nitrogen from shipboard production system.
C. Pure nitrogen taken from shore.
D. Inert gas generated in ship’s boilers

ANS.: D

3. A general service centrifugal pump used for aft peak ballasting is showing negative suction pressure and zero discharge pressure . What can be the probable cause?

1. Discharge valve closed
2. Increased clearance between impeller wear ring and casing ring
3. Clogged suction filter
4. None of the above

ANS.: C

4. When one refrigerating machine serves several compartments and one compartment reaches the desired temperature , the temperature in that compartment is maintained by

1. The expansion valve
2. The solenoid valve
3. The back pressure valve
4.  Any of the above

ANS.: B

5. A leaking water tube in auxiliary boiler onboard is indicated by

1. Increased water make up in the feed filter tank
2. Difficulty in maintaining accurate boiler water level
3. Decrease in the chloride levels of boiler water
4. All of the above.

 ANS.: D

6. A leaking starting air valve on the diesel engine is identified by

1. High temperature of the pipeline leading to the start air valve during operation
2. Abnormal temperature of the starting air manifold during engine operation
3. Abnormal exhaust temperature of the affected cylinder
4. All of the above.

ANS.: A

7. The heat removed from the refrigerant in the condenser of a refrigeration plant is the

1. A.latent heat of expansion
2. B.sensible heat of condensation
3. C. heat of compression
4. D. all of the above

ANS.: