Audio Systems #1
Authored by Adrian Birchenough
Other
12th Grade
Used 26+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why are non-inverting operational amplifiers used in an Audio System?
The have a very high bandwidth
They have a very high input impedance
The have a very high open loop gain
They have a large gain-bandwidth product
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the diagram of an Audio System, what function would a non-inverting amplifier perform?
Power amplifier
Tone control
Mixer
Pre-amplifier
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which subsystem would be able to emphasise particular audio frequencies?
Pre-amplifier
Mixer
Tone control
Power amplifier
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which subsystem provides current to drive the loudspeaker?
Mixer
Tone control
Power amplifier
Pre-amplifier
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To maximise voltage transfer from one subsystem to the next, how must the input impedance of the SECOND subsystem compare with the output impedance of the first subsystem?
It must have a much smaller impedance
It must have exactly the same impedance
It must have a much larger impedance
It doesn't really matter
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of these ranges is correct for full audio bandwidth (for human ears!)?
0 Hz to 20 Hz
0 Hz to 20 kHz
20 Hz to 15 kHz
20 Hz to 20 kHz
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For an amplifier with a given gain-bandwidth product (GBP), if you were to increase the gain what would happen to the amplifiers bandwidth?
Nothing - it stays the same
It increases
It decreases
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