Electronic Devices - Voltage Regulators

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Exercise : Voltage Regulators - General Questions
1.
The 7812 regulator IC provides ________.
5 V
–5 V
12 V
–12 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.

2.
Refer to the given figure. If the zener diode had a rating of 1.7 V, the output voltage would be

2.13 V.
8.36 V.
20.16 V.
25 V.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

3.
Refer to the given figure. This circuit operates at a ________ frequency, and its efficiency is ________.

low, low
low, high
high, high
high, low
Answer: Option
Explanation:
No answer description is available. Let's discuss.

4.
Voltage regulators keep a constant ________ output voltage when the input or load varies within limits.
dc
ac
ripple
Answer: Option
Explanation:
No answer description is available. Let's discuss.

5.
Calculate the ripple voltage of a full-wave rectifier with a 75-F filter capacitor connected to a load drawing 40 mA.
1.20 V
1.28 V
1.32 V
1.41 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.