MM0474
20.
What is used to minimize mismatch between the source and the thermistor
mount when a tuner is not used?
A.
A termination
B.
A low SWR precision attenuator
C.
A directional couple
21.
What indicates on the meter of the 431C power meter when the RANGE switch
is in the null position?
A.
Thermistor mount efficiency
B.
Bridge balance
C.
Bridge unbalance
22.
The power a source will deliver to a load is called
A.
available power.
B.
conjugate power.
C.
total power.
23.
The instrumentation source of error can be reduced when making power
measurements by using
A.
a directional coupler between source and thermistor mount.
B.
C.
tuner.
24.
Thermistor mount model 486A/power meter responds to the
A.
peak-to-peak power.
B.
peak RF power.
C.
average RF power.
25.
Thermoelectric effect error significantly affects
A.
the 432 power meter.
B.
the 431 power meter.
C.
affects both the same.
77
Previous Page
