Question 1

Filters designed to reject low frequencies are filters.&#10;A) low-pass&#10;B) high-pass&#10;C) bandpass&#10;D) band-rejection

Accepted Answer

High-pass filters are designed to allow high frequencies to pass through while rejecting low frequencies.

Question 2

Filters that offer little opposition to current flow when the frequency is low are filters.&#10;A) low-pass&#10;B) high-pass&#10;C) bandpass&#10;D) band-rejection

Accepted Answer

Low-pass filters allow low frequencies to pass through easily, while high frequencies are attenuated. This is the opposite of a high-pass filter, which allows high frequencies to pass through easily and attenuates low frequencies. Bandpass filters allow a specific range of frequencies to pass through, while band-rejection filters attenuate a specific range of frequencies. Since the prompt mentions that the filter offers little opposition to current flow at low frequencies, a low-pass filter is the best choice.

Question 3

The bandwidth of a filter depends on the&#10;A) tolerance&#10;B) Q&#10;C) impedance

Accepted Answer

The bandwidth of a filter is inversely related to its quality factor (Q). A higher Q indicates a narrower bandwidth, while a lower Q indicates a wider bandwidth.

Question 4

When a filter circuit offers little opposition to a frequency, the frequency is said to be .&#10;A) passed&#10;B) rejected

Accepted Answer

When a filter circuit offers little opposition to a frequency, it means that the circuit allows that frequency to pass through, hence it is said to be "passed". Therefore, choice A is the correct option. On the other hand, when a filter circuit offers high opposition to a frequency, it means that the circuit blocks or attenuates that frequency, hence it is said to be "rejected".

Question 5

T filters are so named because they .&#10;A) resemble the letter T&#10;B) are tuned&#10;C) contain a tank circuit&#10;D) contain a trimmer

Accepted Answer

T filters are named for their configuration which resembles the letter T in their schematic representation.

Question 6

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

Accepted Answer

The answer of A high-pass filter produces a sharp curve...

Question 7

A low-pass filter is one that .&#10;A) increases opposition dramatically after the frequency reaches the cut-off frequency&#10;B) passes frequencies in a very narrow frequency range&#10;C) passes a range of frequencies while rejecting frequencies on either side&#10;D) rejects a range of frequencies while passing frequencies on either side

Accepted Answer

A low-pass filter allows frequencies below its cutoff frequency to pass through while significantly attenuating (increasing opposition to) frequencies above the cutoff frequency.

Question 8

In a bandpass filter using series resonance, the&#10;A) impedance&#10;B) ohmic value

Accepted Answer

In a bandpass filter using series resonance, the impedance is minimized at the resonant frequency, allowing signals at that frequency to pass through while attenuating others.

Question 9

A notch filter is another name for a filter.&#10;A) low-pass&#10;B) high-pass&#10;C) bandpass&#10;D) band-rejection

Accepted Answer

A notch filter is specifically designed to reject or attenuate a narrow band of frequencies while allowing all other frequencies to pass through. This is also known as a band-rejection filter or a band-stop filter. Therefore, the best choice is D, which refers to a band-rejection filter.

Question 10

What is used to select one particular radio station from the thousands available?&#10;A) a filter&#10;B) a separator&#10;C) a discriminator&#10;D) a resonator

Accepted Answer

A filter is used to select one particular radio station from the thousands available by filtering out unwanted frequencies and allowing only the desired frequency to pass through. Separators and resonators may be used in radio systems, but they do not specifically serve the purpose of selecting one particular radio station. A discriminator is used in FM demodulation to separate the audio signal from the carrier wave, but it is not directly involved in selecting a radio station.

Question 11

In a high-pass filter, the capacitor is connected in with the load resistor.&#10;A) parallel&#10;B) series

Accepted Answer

The answer of In a high-pass filter, the capacitor is...

Question 12

PI-type filters are so named because they .&#10;A) add 3.14 V to the input&#10;B) multiply the input by 3.14&#10;C) divide the input by 3.14&#10;D) resemble the Greek letter &#960;

Accepted Answer

The answer of PI-type filters are so named because they...

Question 13

Filters that pass a range of frequencies while rejecting frequencies on either side are filters.&#10;A) low-pass&#10;B) high-pass&#10;C) bandpass&#10;D) band-rejection

Accepted Answer

The answer of Filters that pass a range of frequencies...

Question 14

Which type of filters are constructed with two parallel components and one series component?&#10;A) PI filters&#10;B) T filters

Accepted Answer

The answer of Which type of filters are constructed with...

Question 15

A band-rejection filter is one that .&#10;A) passes frequencies below a certain point&#10;B) passes frequencies above a certain point&#10;C) passes a range of frequencies while rejecting frequencies on either side&#10;D) can be narrow band or wide band

Accepted Answer

The answer of A band-rejection filter is one that .&#10;A)...

Question 16

Variable capacitors generally provide a range of tuning than variable inductors.&#10;A) smaller&#10;B) wider

Accepted Answer

The answer of Variable capacitors generally provide a range of...

Question 17

When a filter circuit offers much opposition to a frequency, the frequency is said to be .&#10;A) passed&#10;B) rejected

Accepted Answer

The answer of When a filter circuit offers much opposition...

Question 18

In a bandpass filter using a tank circuit, the impedance of the tank circuit is relatively until the resonant frequency is reached.&#10;A) low&#10;B) high

Accepted Answer

The answer of In a bandpass filter using a tank...

Question 19

Filters designed to exhibit low impedance to frequencies on either side of their resonant frequency are filters.&#10;A) low-pass&#10;B) high-pass&#10;C) bandpass&#10;D) band-rejection

Accepted Answer

The answer of Filters designed to exhibit low impedance to...

Question 20

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

Accepted Answer

The answer of One of the most common types of...

Deck 26: Filters