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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