Lesson 1
PRACTICE EXERCISE
1.
What is the shape of the iron core in the record head?
a.
J-shaped
b.
C-shaped
c.
U-shaped
d.
V-shaped
2.
How is erasure accomplished with a constant amplitude AC signal?
a.
Applying a high-frequency
b.
Applying a low-frequency
c.
Applying a DC voltage
d.
Applying a sinewave
3.
Why is the effect of the bias on the reproduced signal negligible in audio recording?
a.
It is too low a frequency
b.
It is too high a frequency
c.
There is forward bias
d.
There is thermal shutoff
4.
What is the output when the wavelength equals the gap width?
a.
Twice the signal
b.
Half the signal
c.
Equals the signal
d.
Zero
5.
What method of tape recording is not feasible for TV recording, because of the excessive length
of tape required?
a.
Longitudinal
b.
Helical
c.
Quad
d.
Omega wrap
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