Electronic Devices - Voltage Regulators
Exercise :: Voltage Regulators - General Questions
| 46. |
In this op-amp series regulator circuit, which of the following components is the comparator circuit?  |
| A. |
Op-amp | | B. |
Transistor Q1 | | C. |
R1 and R2 resistors | | D. |
Zener diode |
Answer: Option A
Explanation:
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| 47. |
Which component(s) set(s) the voltage across the load in a basic transistor shunt regulator? |
| A. |
Zener diode | | B. |
Transistor base-emitter voltage | | C. |
Both the Zener diode and the transistor base-emitter voltage | | D. |
None of the above |
Answer: Option C
Explanation:
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| 48. |
Voltage regulation requires |
| A. |
only line regulation. | | B. |
only load regulation. | | C. |
a constant load. | | D. |
load and line regulation. |
Answer: Option D
Explanation:
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| 49. |
Across which of the following components of a power supply does the average (dc) voltage exist? |
| A. |
Diodes | | B. |
Secondary of the transformer | | C. |
Capacitor filter | | D. |
None of the above |
Answer: Option C
Explanation:
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| 50. |
Switching regulators are more efficient than linear regulators and are particularly useful in ________-voltage, ________-current applications. |
| A. |
high, high | | B. |
low, high | | C. |
high, low |
Answer: Option B
Explanation:
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