WorksheetsECE315_Feedback2
Total questions: 5
Worksheet time: 3mins
Name
Class
Date
1.
For voltage-current feedback, the return replicate is
a)
grounded
b)
open circuited
2.
For current-voltage feedback, the sense replicate sees
a)
a short circuit
b)
an open circuit
3.
Barkhausen's Criteria for oscillation requires magnitude of loop gain and phase of loop gain equal to
a)
0 and -90, respectively
b)
1 and -90, respectively
c)
1 and -180, respectively
d)
0 and -180, respectively
4.
For a feedback system to be stable,
a)
ωGX < ωPX
b)
ωGX > ωPX
c)
PM > 0
d)
PM < 0
5.
Phase margin is equal to 45o when
a)
ωGX = ωp2
b)
ωPX = ωp2
c)
ωGX = ωp1
d)
ωPX = ωp1
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