Amplified Voice Systems

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What is the purpose of the amplified voice system?

To amplify the voice so it can be heard by shipboard personnel
What is the purpose of a microphone?

Convert sound energy into electrical energy
What are the 4 types of microphones?
- Crystal
- Dynamic
- Carbon
- Magnetic
Which type microphone is also known as the 'moving armature' microphone?

Magnetic
Which type of microphone is also known as the 'moving coil' microphone?

Dynamic
Which type of microphone uses the piezoelectric effect?

Crystal
Which type of microphone operates by changing its internal resistance?

Carbon
Which type of microphone requires a polarizing current?

Carbon
Which microphone is most widely used?

Magnetic
What 3 characteristics are microphones rated according to?
- Frequency response
- Impedance
- Sensitivity
What is the purpose of a loudspeaker?

Convert electrical energy into sound energy
What are the 2 types of loudspeakers?
- Horn
- Direct Radiating
Which type is the simplest form of loudspeaker?

Direct Radiating
What is the capacity of a loudspeaker expressed in?

Watts
What type of loudspeaker is used in high noise spaces, or to cover large areas with sound?

Horn
What is the purpose of the 1MC?

General announcing
What is the purpose of the 6MC?

Intership announcing
What are the 5 alarms in priority from highest to lowest?

Collision, Chemical, General, Unassigned A, Flight Crash
Which alarm has the highest priority?

Collision
What color is the collision contact maker?

Green
What color is the general contact maker?

Red
What color is the chemical contact maker?

Yellow
What conditions will cause busy 1 and busy 2 lights to both be illuminated?
- An alarm is being transmitted
- 1MC and 6MC in use
- 1MC or 6MC are in use using the same amplifier
What is the normal operating mode of the amplifier-oscillator?
- 1MC on 1
- 6MC on 2

Author

CVN68

166792

Card Set

Amplified Voice Systems

Description

Advancement

Updated

2012-08-21T03:24:50Z

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