MM0474
AIPD SUBCOURSE NUMBER MM0474, POWER MEASUREMENTS
EXERCISES FOR LESSON 3
1.
What is the purpose of the 8402B calibrator?
a.
Calibrate power meters
b.
Calibrate thermistors
c.
Calibrate attenuators
2.
Which statement best describes the Model 8402B calibrator?
a.
A precision decade attenuator
b.
An accurate source of AC power
c.
An accurate source of DC power
3.
How is the internal thermistor mount resistance error determined, using
the 8402B calibrator?
a.
By using the mount resistance switch setting
b.
By calibrator function switch
c.
By calibrator range switch
4.
Which mode of operation is the fixed internal reference voltage used in?
a.
Substitute
b.
c.
AC
5.
What control provides the voltage required for the substitution mode of
operation?
a.
Range
b.
Thermistor resistance
c.
Current control
6.
What is the purpose of the differential amplifier (Q2, Q3) in the power
supply of the 8402B?
a.
Provides reference for the +9V supply
b.
Provides reference for the -30V supply
c.
Compares the regulated output voltage to the Zener reference
7.
What control on the Model 8402B permits a calibrator to check power
tracking accuracy?
a.
Range
b.
Function
c.
Current control
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