Question 1

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

A band-rejection filter, also known as a notch filter or band-stop filter, is designed to block a specific range of frequencies while allowing frequencies outside of that range to pass. This functionality can be implemented in a narrow band, affecting a small range of frequencies, or in a wide band, affecting a larger range of frequencies.

Question 2

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

Filters designed to reject low frequencies are high-pass filters.

Question 3

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 frequency signals to pass through while attenuating high frequency signals, making them the best choice for circuits where low frequency signals are desired while filtering out high frequency noise.

Question 4

&#8203;Which type of filters are constructed with two parallel components and one series component?&#10;A) &#8203;PI filters&#10;B) &#8203;T filters

Accepted Answer

PI filters are constructed with two parallel components (usually capacitors) and one series component (usually an inductor), forming a shape that resembles the letter "π".

Question 5

In a bandpass filter using series resonance, the _____ of the circuit is low at the resonant frequency.&#10;A) impedance&#10;B) ohmic value

Accepted Answer

In a series resonance bandpass filter, the impedance of the circuit is low at the resonant frequency. This allows frequencies near the resonant frequency to pass through the circuit, while attenuating frequencies outside of the passband. The ohmic value of the circuit may also be affected by the components used, but it is not directly related to the filter's frequency response.

Question 6

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

Bandpass filters only pass a range of frequencies while rejecting frequencies on either side. Low-pass and high-pass filters only pass frequencies below or above a certain cutoff frequency, respectively. Band-rejection filters only reject a range of frequencies while passing frequencies on either side.

Question 7

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 8

In a bandpass filter using a tank circuit, the impedance of the tank circuit is relatively _____&#160; until the resonant frequency is reached.&#10;A) low&#10;B) high

Accepted Answer

The impedance of the tank circuit is relatively low until the resonant frequency is reached, at which point it becomes high.

Question 9

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

Accepted Answer

Variable capacitors typically have a wider range of tuning compared to variable inductors. This is because the capacitance value of a variable capacitor can be varied over a larger range (by changing the gap or overlap between the plates) compared to the inductance value of a variable inductor (which is limited by the physical geometry of the coil). Therefore, a wider range of tuning can be achieved using variable capacitors.

Question 10

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 also known as a band-rejection or band-stop filter, which allows frequencies outside of a specific range to pass through while attenuating (rejecting) frequencies within that range. It is often used to eliminate a specific unwanted frequency or notch in a signal. Low-pass filters allow low frequencies to pass through, while attenuating high frequencies. High-pass filters allow high frequencies to pass through, while attenuating low frequencies. Bandpass filters allow a specific range of frequencies to pass through, while attenuating frequencies outside of that range.

Question 11

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

The answer of T filters are so named because they...

Question 12

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

The answer of What is used to select one particular...

Question 13

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

Accepted Answer

The answer of The bandwidth of a filter depends on...

Question 14

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...

Question 15

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

The answer of A low-pass filter is one that _____.&#10;A)...

Question 16

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 17

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 18

When a filter circuit offers little 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 little opposition...

Question 19

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 20

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...

Deck 26: Filters