6.
What is the approximate input impedance of the video amplifier to a 1
MHz signal?
a.
1 kilohm
b.
10 kilohms
c.
100 kilohms
d.
1 megohm
7.
What four functional circuits comprise the Model 5261A?
a.
Preamplifier, video amplifier, output amplifier, meter circuit
b.
Preamplifier, attenuator, video amplifier, meter circuit
c.
Attenuator, video amplifier, output amplifier, power supplies
d.
Preamplifier, attenuator, video amplifier, output amplifier
8.
What function(s) do Q1 and Q2 in the preamplifier provide?
a.
High input impedance
b.
Low output impedance
c.
Amplification
d.
All of the above
9.
What is the purpose of CR1 and CR2 in the preamplifier?
a.
Half wave rectifier
b.
Pulse shaper
c.
Peak limiting
d.
All of the above
10.
What circuit establishes the overall gain of the Model 5261A?
a.
Preamplifier
b.
Attenuator
c.
Video Amplifier
d.
Output Amplifier
11.
Positive feedback from the output amplifier to the base of Q4 in the
video amplifier
a.
decreases
gain
at
higher frequencies.
b.
increases
gain
at
lower frequencies.
c.
increases
gain
at
higher frequencies.
d.
decreases
gain
at
lower frequencies.
92
Previous Page
