Active and Passive Filters » Exercise – 1
1. The primary function of filter is to :
(a) minimize AC input variations
(b) suppress odd harmonics in the rectifier output
(c) stabilize DC level of the output voltage
(d) remove ripples from the rectifier output
2. The function of a bleeder resistor in a power supply is :
(a) the same as that of load resistor
(b) to ensure a minimum current drain in the circuit
(c) to increase the output dc voltage
(d) to increase the output current
3. A 10 V power supply would use …….. as filter capacitor.
(a) paper capacitor
(b) mica capacitor
(c) electrolytic capacitor
(d) air capacitor
4. A 1000 V power supply would use …….. as a filter capacitor.
(a) paper capacitor
(b) air capacitor
(c) mica capacitor
(d) electrolytic capacitor
5. The …… filter circuit results in the best voltage regulation.
(a) choke input
(b) capacitor input
(c) resistance input
(d) none of the above
Related Posts
Filters » Exercise - 110. A high pass filter is one which : (a) passes all high frequencies (b) attenuates all low frequencies (c) attenuates all frequencies below a designated cut-off frequency, and passes all frequencies above cut-off (d) none of these- 555555555543. A low-pass filter ________. (a) provides a constant output up to the cutoff frequency (b) passes frequencies from zero up to the cutoff frequency (c) rejects all frequencies above the cutoff frequency (d) All of the above
- Filters » Exercise - 19. A low pass filter is one which : (a) passes all low frequencies (b) attenuates all high frequencies (c) passes all frequencies up to cut-off frequency, and attenuates all other frequencies (d) none of these
- 5555555555 52. An RC low-pass filter consists of a 120 Ω resistor and a 0.002 μF capacitor. The output is taken across the capacitor. The circuit's critical frequency is ________. (a) 333 kHz (b) 633 kHz (c) 331 kHz (d) 60 kHz
- Filters » Exercise - 115. A band elimination filter is one : (a) which attenuates all frequencies less than lower cut-off frequency f1 (b) which attenuates all frequencies greater than upper cut-off frequency f2 (c) frequencies lying between f1 andf2 are attenuated and all other frequencies are passed (d) none of these