Deck 26: Filters

Question 1

In a bandpass filter using a tank circuit, the impedance of the tank circuit is relatively _____  until the resonant frequency is reached.

A) low
B) high

Answer 1

A

Question 2

A high-pass filter produces a sharp curve and the output signal peaks at the point of _______________.

Answer 2

resonance

Question 3

PI-type filters are so named because they _____.

A) add 3.14 V to the input
B) multiply the input by 3.14
C) divide the input by 3.14
D) resemble the Greek letter π

Answer 3

D

Question 4

A band-rejection filter is one that _____.

A) passes frequencies below a certain point
B) passes frequencies above a certain point
C) passes a range of frequencies while rejecting frequencies on either side
D) can be narrow band or wide band

Question 5

When a filter circuit offers much opposition to a frequency, the frequency is said to be _____.

A) passed
B) rejected

Question 6

T filters are so named because they _____.

A) resemble the letter T
B) are tuned
C) contain a tank circuit
D) contain a trimmer

Question 7

The bandwidth of a filter depends on the _____ of the components.

A) tolerance
B) Q
C) impedance

Question 8

One of the most common types of low-pass filters is an inductor connected in _______________ with a load resistor.

Question 9

Filters designed to reject low frequencies are _____ filters.

A) low-pass
B) high-pass
C) bandpass
D) band-rejection

Question 10

What is used to select one particular radio station from the thousands available?

A) a filter
B) a separator
C) a discriminator
D) a resonator

Question 11

A low-pass filter is one that _____.

A) increases opposition dramatically after the frequency reaches the cut-off frequency
B) passes frequencies in a very narrow frequency range
C) passes a range of frequencies while rejecting frequencies on either side
D) rejects a range of frequencies while passing frequencies on either side

Question 12

Variable capacitors generally provide a _____ range of tuning than variable inductors.

A) smaller
B) wider

Question 13

In a high-pass filter, the capacitor is connected in _____ with the load resistor.

A) parallel
B) series

Question 14

Filters designed to exhibit low impedance to frequencies on either side of their resonant frequency are _____ filters.

A) low-pass
B) high-pass
C) bandpass
D) band-rejection

Question 15

Filters that offer little opposition to current flow when the frequency is low are _____ filters.

A) low-pass
B) high-pass
C) bandpass
D) band-rejection

Question 16

A notch filter is another name for a _____ filter.

A) low-pass
B) high-pass
C) bandpass
D) band-rejection

Question 17

In a bandpass filter using series resonance, the _____ of the circuit is low at the resonant frequency.

A) impedance
B) ohmic value

Question 18

​Which type of filters are constructed with two parallel components and one series component?

A) ​PI filters
B) ​T filters

Question 19

When a filter circuit offers little opposition to a frequency, the frequency is said to be _____.

A) passed
B) rejected

Question 20

Filters that pass a range of frequencies while rejecting frequencies on either side are _____ filters.

A) low-pass
B) high-pass
C) bandpass
D) band-rejection