Explore topic-wise MCQs in Active Filter Circuits.

This section includes 109 Mcqs, each offering curated multiple-choice questions to sharpen your Active Filter Circuits knowledge and support exam preparation. Choose a topic below to get started.

101.

Calculate the voltage regulation of a power supply having V NL = 50 V and V FL = 48 V.

A. 4.17%
B. 5.2%
C. 6.2%
D. 7.1%
Answer» B. 5.2%
Discussion
102.

A voltage regulator with a no-load output dc voltage of 12 V is connected to a load with a resistance of 10 . If the load resistance decreases to 7.5 , the load voltage will decrease to 10.9 V. The load current will be ________, and the percent load regulation is ________.

A. 1.45 A, 90.8%
B. 1.45 A, 10.09%
C. 1.2 A, 90.8%
D. 1.2 A, 10.09%
Answer» C. 1.2 A, 90.8%
Discussion
103.

The 7805 regulator IC provides ________.

A. 5 V
B. –5 V
C. 12 V
D. –12 V
Answer» B. –5 V
Discussion
104.

In which period is the capacitor filter discharged through the load in a full-wave rectifier?

A. The time during the positive cycle
B. The time during which the diodes are not conducting
C. The time during which the diode(s) is (are) conducting
D. The time during the negative cycle
Answer» C. The time during which the diode(s) is (are) conducting
Discussion
105.

Calculate the ripple voltage of a full-wave rectifier with a 75- F filter capacitor connected to a load drawing 40 mA.

A. 1.20 V
B. 1.28 V
C. 1.32 V
D. 1.41 V
Answer» C. 1.32 V
Discussion
106.

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

A. dc
B. ac
C. ripple
D. -
Answer» B. ac
Discussion
107.

Refer to the given figure. If the zener diode had a rating of 1.7 V, the output voltage would be

A. 2.13 V.
B. 8.36 V.
C. 20.16 V.
D. 25 V.
Answer» C. 20.16 V.
Discussion
108.

Refer to the given figure. This circuit operates at a ________ frequency, and its efficiency is ________.

A. low, low
B. low, high
C. high, high
D. high, low
Answer» D. high, low
Discussion
109.

The 7812 regulator IC provides ________.

A. 5 V
B. –5 V
C. 12 V
D. –12 V
Answer» D. –12 V
Discussion