MM0474
8.
source, it can be used as a
a.
Precision current meter
b.
Power meter
c.
Power stabilizer
9.
In the bolometer bridge, if the element is a barretter, what happens to
the resistance as RF power is applied to the bolometer?
a.
Resistance will increase
b.
Resistance will decrease
c.
Resistance will remain the same
10.
What stabilization is required in the operational amplifier when connected
as a unity gain voltage follower?
a.
DC
b.
AC
c.
RF
11.
In the reference generator, the output current is limited by the current
limiting circuit of which power supply?
a.
+15 volt
b.
-15 volt
c.
+30
Why are Q106 and Q107, as the constant current source in 15 volt power
12.
supply circuit, complementary transistors?
a.
For current gain
b.
For impedance matching
c.
For temperature tracking
13.
What is the voltage reference element for the +15 volt power supply?
a.
Q111
b.
Q108
c.
D109
14.
What determines the amount of power coupled into the auxiliary guide of
the power standards set?
a.
Power from the source
b.
Thermistor mounts
c.
Coupling factor of the waveguide
135
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