MM0474
7.
The effective efficiency concept corrects for
A.
B.
thermistor mount inefficiency.
C.
thermistor mount efficiency.
8.
What is used to reduce mismatch error when the source SWR is high or when
high accuracy is required?
A.
Calibration factor
B.
Null adjust
C.
Tuner
9.
Where is the calibration factor values of each thermistor mount obtained?
A.
From the power meter
B.
Data label of each mount
C.
Manufacturer's manual on the mount
10.
What happens (in the power meter circuit) when the mount res switch, S1 is
changed to match the thermistor mount used with it?
A.
Changes the resistance arm of the RF detection bridge
B.
Changes the bias to the thermistor mount
C.
Connects the RF detection bridge to the metering circuit
11.
What is used to re-balance the loop in the compensation and metering
bridge circuit of model 431C power meter?
A.
10 kHz power
B.
DC feedback
C.
Compensating thermistors
12.
What circuit in the model 431 power meter converts a linear voltage
function, proportional to the square root of applied power, to a square
function so that power may be indicated on a linear scale?
A.
Feedback differential amplifier
B.
Synchronous detector
C.
Meter circuit
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