12.
Which is not a function of Q3 and Q6 in the video amplifier?
a.
Positive feedback amplification
b.
Drift compensation
c.
Gain stabilization at low frequencies
d.
Power supply filtering
13.
What is the purpose of CR2, CR3, and C12 in the meter circuit?
a.
Set Q4 emitter bias
b.
Prevent excessive meter current
c.
Clamp meter circuit voltage
d.
Rectify meter voltage
14.
Diode CR4 in the meter circuit is biased to conduct if the input
signal exceeds
a.
-1.5 volts.
b.
15 millivolts.
c.
100 millivolts.
d.
150 millivolts.
15.
If the output level meter
will
not
indicate,
which
is
the
more
probable cause? (figure 7)
a.
R11
increased in value
b.
R11
decreased in value
c.
R12
increased in value
d.
C12
open
93
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