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...my Stuff > Non-propulsion Auxiliary Equipment > Flashcards

Non-propulsion Auxiliary Equipment Flashcards

1
Q

most modern steering gear units are driven by what type of unit?

A

electro hydraulic type

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2
Q

the electro hydraulic steering unit consists of what two major parts?

A

the ram unit and a power unit

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3
Q

what causes the ram to move on electro hydraulic steering unit?

A

oil pressure applied to one end of of the operating cylinder

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4
Q

what will move along wit the ram unit?

A

the rudder

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5
Q

the power unit consists of how many independent units?

A

two, one is online and the other in standby

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6
Q

what protects the steering pump unit from over pressurization?

A

a relief valve

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7
Q

in what case of a failure to both hydraulic pumps what is provided as backup pumping system?

A

a hand pump

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8
Q

the trick wheel allows local control of what?

A

the rudder

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9
Q

what three types of anchor windless will you find onboard ship?

A

electric, electrohydraulic and hand driven

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10
Q

how many pumps normally drive one wildcat?

A

one

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11
Q

hand driven windlasses are used on what type of vessels?

A

small ships where the anchor gear can be handles without excessive effort by operating personnel

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12
Q

wen operating the anchor windlass care must be taken to inspect what frequently?

A

compression of brake linings and the clearance between the brake drum and band

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13
Q

navy electro hydraulic winches are all classified as what type?

A

drum type

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14
Q

the drum shaft on an electro hydraulic winch is normally driven by what?

A

hydraulic motor

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15
Q

where band brakes are used on the winch drums what should be inspected frequently?

A

the friction linings

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16
Q

what prevents slippage of the winch when in operation?

A

a locking device

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17
Q

cranes are designed to withstand what percent of rated load at no speed?

A

150 percent

18
Q

all cranes must withstand a static load of what?

A

200 percent of rated load without damage or distortion

19
Q

king post bearing allows for what types of loads?

A

vertical or horizontal

20
Q

define the term boom when associated with a. shipboard crane?

A

a structural unit used to lift, transfer or support heavy weights

21
Q

the king post bearing is located where?

A

at the top of the kingpost

22
Q

modern aircraft carrier elevators are powered by what?

A

an electro hydraulic power unit

23
Q

what is the lifting capacity of an aircraft elevator?

A

79, 000 to 105, 000 pounds

24
Q

what medium is used along with oil pressure to power the aircraft elevator?

A

nitrogen

25
Q

movement of the balanced piston type valve to the off center position will cause the aircraft elevator to?

A

move upward

26
Q

what prevents overtravel of the aircraft elevator?

A

an electrical stopping device which limits the stroke of the ram

27
Q

classify the two types of conveyors commonly used aboard ship?

A

gravity and powered

28
Q

conveyors are usually what size?

A

18 inches wide but they can be 12 inches wide for use in restricted passageways

29
Q

powered conveyors are configured in what two ways?

A

vertically and horizontally

30
Q

steam-jacketed kettles operate at a maximum pressure of what?

A

45 psi

31
Q

what prevents steam-jacketed kettle over pressurization?

A

a relief valve set at 45 psi

32
Q

steam-jacketted kettles are made of what material?

A

corrosion resisting steel

33
Q

a steamer operates at what pressure?

A

5-7 psi

34
Q

dishwashing machines are classified into what three groups?

A

one, two or three machines

35
Q

which dishwashing machine is fully automatic?

A

three-tank machine

36
Q

the temperature of the wastewater must be maintained within what parameters?

A

140-160 degrees F.

37
Q

Bacteria in the water is maintained by what?

A

regulation of water temperature

38
Q

the hot water rinse is controlled by an automatic steam-mixing valve which regulates temperature to?

A

180-195 degrees F.

39
Q

what is used to descale a dishwasher?

A

orthophosphoric acid, 85 percent

40
Q

prevention of scale in dishwashing machines is essential for what two reasons?

A

excessive scale will clog pipes and drains; scale deposits provide a haven for harmful bacteria

41
Q

in order to calculate the required amount of descaling solution what must be known about the dishwashing machine?

A

capacity in gallons

...my Stuff (18 decks)

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