300+ TOP MCQs on Voltage Regulators and Answers

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MCQs on Voltage Regulators :

1. Which of the following is considered as three-pin voltage regulator ICs?
(A) Voltage regulators which are adjustable
(B) Fixed voltage regulator
(C) Both a and b

Answer

Answer: (C) Both a and b

2. Which type of IC voltage regulator there is a continuous variation in the impedance of transistor in order to supply the desired amount of load current?
(A) Linear regulators
(B) Switching regulators
(C) Both a and b

Answer

Answer: (A) Linear regulators

3. Voltage regulators require
(A) Only line regulation
(B) Only load regulation
(C) A constant load
(D) Load and line regulation

Answer

Answer: (D) Load and line regulation

4. What type of regulators offer inherent short-circuit protection?
(A) Shunt regulators
(B) Series regulators
(C) Three-terminal regulators
(D) Switching regulators

Answer

Answer: (A) Shunt regulators

5. Voltage regulators keep a constant …………output voltage when the input or load varies within limits.
(A) DC
(B) AC
(C) ripple

Answer

Answer: (A) DC

6. Switching regulators are series type regulators, which has ……….power dissipation and …………efficiency.
(A) Increased, increased
(B) Increased, reduced
(C) Reduced, reduced
(D) Reduced, increased

Answer

Answer: (C) Reduced, increased

7. Which among the following performance parameter is called the change in line voltage within a specified range at a constant load current?
(A) Line regulation
(B) Load regulation
(C) Temperature stability factor
(D) Ripple factor

Answer

Answer: (A) Line regulation

8.: The output voltage of a regulated power supply is affected by which of the following factors
(A) Input voltage
(B) Load current
(C) Temperature
(D) All the above

Answer

Answer: (D) All the above

9. Series pass transistor always operates in the………. region in a linear IC voltage regulator
(A) Active
(B) Saturation
(C) Cut-off
(D) All of these

Answer

Answer: (A) Active