MCQ on Voltage Regulator

MCQ on Voltage Regulator

Q1: Which of the following is considered as three-pin voltage regulator ICs?

1. Voltage regulators which are adjustable
2. Fixed voltage regulator
3. Both a and b

Answer: (c) Both a and b

Q2: 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?

1. Linear regulators
2. Switching regulators
3. Both a and b

Answer: (a) Linear regulators

Q3: Voltage regulators require

1. Only line regulation
2. Only load regulation
3. A constant load
4. Load and line regulation

Answer: (d) Load and line regulation

Q4: What type of regulators offer inherent short-circuit protection?

1. Shunt regulators
2. Series regulators
3. Three-terminal regulators
4. Switching regulators

Answers: (a) Shunt regulators

Q5: Voltage regulators keep a constant …………output voltage when the input or load varies within limits.

1. DC
2. AC
3. ripple

Answer: (a) DC

Q6: Switching regulators are series type regulators, which has ……….power dissipation and …………efficiency.

1. Increased, increased
2. Increased, reduced
3. Reduced, reduced
4. Reduced, increased

Answer: (c) Reduced, increased

Q7: Which among the following performance parameter is called the change in line voltage within a specified range at a constant load current?

1. Line regulation
2. Load regulation
3. Temperature stability factor
4. Ripple factor

Answer: (a) Line regulation

Q8: The output voltage of a regulated power supply is affected by which of the following factors

1. Input voltage
2. Load current
3. Temperature
4. All the above

Answer: (d) All the above

Q9: Series pass transistor always operates in the………. region in a linear IC voltage regulator

1. Active
2. Saturation
3. Cut-off
4. All of these

Answer: (a) Active