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IC World > IC basics > Flashcards

IC basics Flashcards

0
Q

What is a class 2 IC system?

A
  • energized when the ship is preparing to get underway/while underway
  • combined with class 1 are essential to satisfactory to ship control.
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1
Q

What is a class 1 IC system?

A
  • energized at all times

- essential to the safety of the ship/personnel

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2
Q

What is class 3 IC systems?

A
  • energized during condition watches/operations

- combined with class 1/2 and are essential to interior control

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3
Q

What is a class 4 IC system?

A

Only energized when required

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4
Q

Readiness classification on IC switchboard plates?

A

Class 1: yellow
Class 2: black
Class 3: red
Class 4: white

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5
Q

What alarm color is for the general alarm?

A

Red

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6
Q

What alarm color is for the chemical alarm?

A

Green

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7
Q

What alarm color is for the sonar alarm?

A

Yellow

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8
Q

What alarm color is for the collision alarm?

A

Yellow

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9
Q

What alarm color is for the power plant alarm?

A

White

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10
Q

What alarm color is for the missile jettison alarm?

A

Blue

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11
Q

What alarm color is for the missile emergency?

A

Orange

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12
Q

IC switchboard power distribution

A

60 hz, 120v, 3-phase/single phase
400 hz, 120v, 3-phase
DC, 28/50

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13
Q

IC switchboard are used for?

A

Energized interior communication systems

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14
Q

Types of fuses in the IC switchboard

A

F03a/b- plastic or ceramic with silver plated ferrules

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15
Q

F03A

A

Has instantaneous blow characteristics

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16
Q

F03B

A

Has time delay characteristics

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17
Q

Types of telephone equipment installed

A
  • sound powered
  • dial telephones
  • IVCS
  • misc equipment
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18
Q

Sound powered

A

Uses audio energy from speakers voice. Audio energy is converted into electrical energy by the transmitter

19
Q

H-203/U- headset

A
  • Primarily for one-to-one talking

- transmitter/receiver units are interchangeable

20
Q

H-200/U- headset/chestset

A

Designed for general use

21
Q

H-201/U- headset

A

Used by plotters and console operators

22
Q

H-202/U-headset/chestset

A

Used in high noise areas

23
Q

Types of ways to control sound powered system

A
  • switchboard type
  • switch box type
  • string type
24
Q

Switchboard type

A

Controls the sound powered system from the IC switchboard

25
Q

Switch box types

A

Sound powered is controlled from a switch-box located at the principal station of the circuit

26
Q

string type

A

Where all sound powered stations are connected in parallel

27
Q

Switchboard circuits

A
  • have cutout switches on the sound powered switchboards

- done in parallel

28
Q

Switch box

A

Consist of several line cutout switches in a switch box

29
Q

String circuit

A

Are a series of jack boxes connected in parallel with no switches to cut out a station

30
Q

Types of switching mechanisms commonly used are:

A
  • Automatically electric strowger switch
  • Stromberg-Carlson X-Y universal switch
  • Dynalec crossbar switch
31
Q

EM/MJ signal equipment

A
  • 16 ring stations
  • EM: provides for selective calling station on a common talk circuit
  • MJ: provides for selective calling and selective talk circuits
32
Q

Manual switches

A

Used in alarm circuits to initiate the alarm

33
Q

Mechanical switches

A

Operated by the movement of mechanisms such as shafts, valves, or doors.

34
Q

Pressure and vacuum switches

A

Contain either a bellows or diaphragm working against an adjustable spring

35
Q

Temperature operated switches

A

Has bellows which extends or retracts against as a sealed liquid expands or contracts with the rise or fall in temp

36
Q

Types of IC/Js

A
  • 105
  • 125
  • 150
37
Q

Liquid level switch

A

Contain a magnetic core which operates a reed switch as the float increases or decreases.

38
Q

Flow switches

A

Installed in fluid lines to sense fluid flow

39
Q

Water switches

A

Installed in dry pipe magazine sprinkling or flooding systems

40
Q

Infrared detectors

A
  • sense flame only

- activated when flicker rate is between 8hz and 15hz

41
Q

IC/SM alarm module accepts an input from a sensing element with a resistance of?

A

6800-7000 ohms

42
Q

What causes an alarm to sound

A

A short

43
Q

Normal mode if IC/SM

A
  • Top half is lit
  • Bottom is unlit
  • No tone
44
Q

Standby mode of IC/SM

A
  • Top is lit
  • Bottom is lit
  • Wailing tone
45
Q

Cut-out mode of IC/SM

A
  • Top is unlit
  • Bottom is lit
  • No tone
46
Q

Test mode of IC/SM

A
  • Top is lit

- bottom is

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