MCQs on Voltage Regulators
Q: Switching regulators are series type regulators, which has ……….power dissipation and …………efficiency.
- Increased, increased
- Increased, reduced
- Reduced, reduced
- Reduced, increased
Answer: (3) Reduced, increased
Q: Which among the following performance parameter is called the change in line voltage within a specified range at a constant load current?
- Line regulation
- Load regulationTemperature stability factor
- Ripple factor
Answer: (1) Line regulation
Q: The output voltage of a regulated power supply is affected by which of the following factors
- Input voltage
- Load current
- Temperature
- All the above
Answer: (4) All the above
Q: Series pass transistor always operates in the………. region in a linear IC voltage regulator
- Active
- Saturation
- Cut-off
- All of these
Answer: (1) Active
Q: Which of the following is considered as three-pin voltage regulator ICs?
- Voltage regulators which are adjustable
- Fixed voltage regulator
- Both a and b
Answer: (3) Both a and b
Q: 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?
- Linear regulators
- Switching regulators
- Both a and b
Answer: (1) Linear regulators
Q: Voltage regulators require
- Only line regulation
- Only load regulation
- A constant load
- Load and line regulation
Answer: (4) Load and line regulation
Q: What type of regulators offer inherent short-circuit protection?
- Shunt regulators
- Series regulators
- Three-terminal regulators
- Switching regulators
Answers: (1) Shunt regulators
Q: Voltage regulators keep a constant …………output voltage when the input or load varies within limits.
- DC
- AC
- ripple
Answer: (1) DC
