14.
The test shown in B of figure 1-12 is performed to determine if there
is an impedance match between the
a.
voltmeter and the 600-ohm resistor at station B (receiving).
b.
oscillator at station A (sending) and the circuit under test.
c.
terminating equipment at station B (receiving) and the circuit
under test.
d.
oscillator at station A (sending) and the voltmeter at station B
(receiving).
15.
The minimum value of input terminal impedance that will be within the
tolerance is
a.
500 ohms.
c.
540 ohms.
b.
525 ohms.
d.
600 ohms.
16.
You will know when system characteristic impedance needs to be checked
by the
a.
rise in reflection loss and a drop in received signal level.
b.
drop in reflection loss and a drop in received signal level.
c.
rise in reflection loss and a drop in the transmitting level.
d.
drop in the reflection loss and a rise in the transmitting level.
17.
Assume that a test of the input terminal impedance of a circuit gives
a terminated voltage (V1) of 1.63 volt and an open circuit voltage
(V2) of 3.85 volts.
Your calculations show that the input terminal
impedance of the circuit is approximately
a.
135 ohms.
c.
653 ohms.
b.
440 ohms.
d.
705 ohms.
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