Exercise: Diode Applications

Questions for: Diode Applications

In a particular problem, which mode has the highest level of IDQ?
A:
Ideal
B:
Approximate equivalent
C:
Exact mode using characteristic curve
D:
None of the above
Answer: A
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Refer to the figure given below. The probable trouble, if any, indicated by these voltages is

A:
one of the diodes is open.
B:
a diode is shorted.
C:
an open transformer secondary.
D:
the filter capacitor is shorted.
Answer: D
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In the operation of a half-wave rectifier with a capacitor-input filter, the ripple factor can be lowered by ________ the value of the filter capacitor or ________ the load resistors.
A:
decreasing, decreasing
B:
decreasing, increasing
C:
increasing, decreasing
D:
increasing, increasing
Answer: D
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Calculate IL and IZ.

A:
2 mA, 0 mA
B:
4 mA, 2 mA
C:
2 mA, 2 mA
D:
2 mA, 4 mA
Answer: D
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If the ac supply is 60 Hz, what will be the ripple frequency out of the half-wave rectifier?
A:
30 Hz
B:
50 Hz
C:
60 Hz
D:
120 Hz
Answer: C
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