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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
Switchboard type
Controls the sound powered system from the IC switchboard
25
Switch box types
Sound powered is controlled from a switch-box located at the principal station of the circuit
26
string type
Where all sound powered stations are connected in parallel
27
Switchboard circuits
- have cutout switches on the sound powered switchboards | - done in parallel
28
Switch box
Consist of several line cutout switches in a switch box
29
String circuit
Are a series of jack boxes connected in parallel with no switches to cut out a station
30
Types of switching mechanisms commonly used are:
- Automatically electric strowger switch - Stromberg-Carlson X-Y universal switch - Dynalec crossbar switch
31
EM/MJ signal equipment
- 16 ring stations - EM: provides for selective calling station on a common talk circuit - MJ: provides for selective calling and selective talk circuits
32
Manual switches
Used in alarm circuits to initiate the alarm
33
Mechanical switches
Operated by the movement of mechanisms such as shafts, valves, or doors.
34
Pressure and vacuum switches
Contain either a bellows or diaphragm working against an adjustable spring
35
Temperature operated switches
Has bellows which extends or retracts against as a sealed liquid expands or contracts with the rise or fall in temp
36
Types of IC/Js
- 105 - 125 - 150
37
Liquid level switch
Contain a magnetic core which operates a reed switch as the float increases or decreases.
38
Flow switches
Installed in fluid lines to sense fluid flow
39
Water switches
Installed in dry pipe magazine sprinkling or flooding systems
40
Infrared detectors
- sense flame only | - activated when flicker rate is between 8hz and 15hz
41
IC/SM alarm module accepts an input from a sensing element with a resistance of?
6800-7000 ohms
42
What causes an alarm to sound
A short
43
Normal mode if IC/SM
- Top half is lit - Bottom is unlit - No tone
44
Standby mode of IC/SM
- Top is lit - Bottom is lit - Wailing tone
45
Cut-out mode of IC/SM
- Top is unlit - Bottom is lit - No tone
46
Test mode of IC/SM
- Top is lit | - bottom is

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