GENERAL ENGINEERING KNOWLEDGE – MEO CLASS 4 MMD PAPER

62. The zipper of an immersion suit should be lubricated with _____________.
    1. paraffin
    2. oil
    3. graphite
    4. vegetable oil

ANS.: C

63. An insulation resistance test is performed on a particular piece of electric equipment. In addition to the resistance reading, what information listed below should be entered in the electrical log?
    1. The maximum allowable operating temperature of the machine.
    2. The temperature of the machine at the time the resistance reading was taken.
    3. The normal temperature rise of the machine.
    4. The complete name plate data from the resistance test instrument used to obtain the reading.

ANS.: B

64. When removing the cap from a sounding tube on a MODU, the sound of air escaping indicates.
    1. the tank is full
    2. the tank may be partially flooded
    3. the tank level has dropped
    4. the tank is completely flooded

ANS.: B

65. A solid stream of water might be useful in fighting a burning oil fire on deck when it is used ____________.
    1. to wash burning oil over the side
    2. to provide cooling for the fire fighters
    3. in conjunction with chemical foam
    4. to cool the main deck

ANS.: A

66. The burner assembly on an automatically fired auxiliary boiler fitted with variable capacity, pressure atomizing burners, maintains steam pressure by
    1. cycling on and off
    2. changing fuel oil return pressure
    3. changing the speed of a rotary cup
    4. Varying air pressure supplied to the nozzle  

ANS.: B           

67. In Stern tube, aft of FOREWARD SEAL is leaking then
    1. forward tank oil level increase
    2. drop in header tank level
    3. increase in header tank level
    4. aft tank oil level increase

ANS.: B

69. While starting a hydraulic anchor windlass, you observe that hydraulic pressure does not develop in spite of the proper operation of the electric drive motor. Which of the following actions should you take FIRST to restore pressure?
    1. Make certain that the hydraulic reservoir is filled to the proper level.
    2. Inspect the disc brake on the electric motor for proper operation.
    3. Check the electric motor for an open overload relay contact.
    4. Check for full voltage supply to the electric motor.

ANS.: A

70. A primary element used with flow measurement devices highly suitable for liquids containing solids in suspension, is a ____________.
    1. concentric orifice
    2. convergent nozzle
    3. venturi tube
    4. pilot tube

ANS.: C

71. Prior to major overhaul of main engine onboard, the engine room crane is tested by
    1. Operating the crane through the normal range
    2. Testing of the crane with two sample abnormal conditions
    3. Inspection of the crane hook and other safety arrangements
    4. Stress testing of crane wire with peak loads

ANS.: C

72. Prior to major overhaul of main engine onboard, the engine room crane is tested by
    1. Operating the crane through the normal range
    2. Testing of the crane with two sample abnormal conditions
    3. Inspection of the crane hook and other safety arrangements
    4. Stress testing of crane wire with peak loads

ANS.: 1,3

73. Water carryover from boiler onboard through the steam causes
    1. Erosion of the steam plant machinery
    2. Low water level inside the boiler
    3. Build-up of deposits on the steam plant machinery
    4. None of the above

ANS.: 1,3

74. A diffuser is provided at the end of a mechanical atomizer in boiler onboard
    1. To prevent blow back of the flame
    2. To mix the air and fuel properly
    3. To prevent blow out of the flame
    4. To eject the excess fumes from the atomizer

ANS.: 1,2

75. Short cycling of a fridge compressor can occur in which of the following cases?
    1. Air ingress into the system
    2. A leaking solenoid valve
    3. High cooling water temperature going to the condenser
    4. Excessive refrigerant charge

ANS.: B

76. Steam stop valve is eased of its seat during boiler start up from cold
    1. To allow thermal expansion of parts
    2. To allow steam flow during start up
    3. To prevent water hammer
    4. All of the above

ANS.: A

77. Duty of standby person at the entrance of the enclosed compartment during enclosed space entry is
    1. To alert others in case of untoward emergency
    2. To provide first aid to injured person
    3. To assist for the work carried out in the enclosed compartment
    4. All of the above

ANS.: D

78. Which of the following statements about the design of D- type boilers, is false?
    1. The heavier water in top drum flows back to the bottom drum through the down- comers outside the furnace
    2. Inside the furnace the water is heated up in the risers
    3. The upper drum is the steam/water drum and the lower one is the water drum.
    4. The feed water is pumped into the lower drum

ANS.: D

79. If the watch keeping engineer encounters a Main Engine Slow down alarm he should__
    1. Immediately cancel the slowdown in the control panel
    2. If navigation circumstances permit, after consulting chief engineer he should tell bridge to stop engine , investigate the fault ,rectify it in consultation with senior engineers and then prepare for restarting the engine
    3. He should raise engineer’s alarm and wait for all engineers to reach the engine room
    4. He need not take any action and wait for the alarm to resolve on its own and then cancel the slow down

ANS.: B

80. Which of the following types of coatings used in tanks of a chemical carrier provides a comprehensive protection against most solvents?
    1. Epoxy coatings
    2. Polyurethane coatings
    3. Zinc silicate
    4. Phenolic resins

ANS.: D

81. Presence of catalytic fines in fuel oil is significant to engineers on board because_
    1. Catalytic fines tend to impair proper operation of purifiers
    2. Catalytic fines lead to abrasive wear in liners , piston rings and fuel injection equipment
    3. Catalytic fines necessitate increase in injection temperature
    4. Catalytic fines necessitate increase in storage temperature

ANS.: B

82. A partial opening of which of the following kinds of valves can lead to wire -drawing of its seat?
    1. Globe Valve
    2. Butterfly valve
    3. Gate Valve
    4. Full bore angle valve

ANS.: C

83. Which of the following types of steam traps uses the pressure energy of the steam to close the outlet ?
    1. Thermostatic trap
    2. Thermodynamic trap
    3. Mechanical trap
    4. Vacuum trap

ANS.: B

84. Sequential starting of machineries after black out in engine room is necessary
    1. To prevent overload of Generators
    2. To quickly restore the failed power supply in order
    3. To prevent damage to machinery which has been switched off
    4. All of the above

ANS.: A

85. Salinity of distilled water produced from fresh water generator onboard depends on
    1. Amount of feed set in fresh water production
    2. Amount of salt water leaking from condenser if any
    3. Temperature of the sea water used
    4. Efficiency of brine ejector from the evaporator shell

ANS.: A,B,D

86. Which of the following is the material used for manufacturing tube plates of a shell and tube type heat exchanger?
    1. Cupro-nickel
    2. Aluminum Brass
    3. Admiralty Brass
    4. Gunmetal

ANS.: C

87. How is the water circulated between water and steam drums in a water tube D- type boiler?
    1. By the boiler feed water pump
    2. By a circulating pump outside the boiler
    3. Due to difference in densities of water and steam
    4. None of the above

ANS.: C

88. The seating material for perfectly sealing type Ball valves is usually made up of 
    1. Rubber 
    2. PTFE or Nylon 
    3. Rubber reinforced with steel wire 
    4. Stainless steel

ANS.: B

89. Air is removed from refrigeration system by (1) ________ at receiver after (2) ________ (3) ___ Gas in receiver.

ANS. PURGING 2.COLLECTING. 3. CONDENSATING

90. Water leaking from a pump packing gland is kept away from the bearing housing by the use of
    1. shaft sleeves
    2. lantern rings
    3. water fingler        
    4. water seals

ANS.: C