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Test: Frequency Variation in a Series RLC Circuit - Electrical Engineering (EE) MCQ


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10 Questions MCQ Test - Test: Frequency Variation in a Series RLC Circuit

Test: Frequency Variation in a Series RLC Circuit for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Test: Frequency Variation in a Series RLC Circuit questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The Test: Frequency Variation in a Series RLC Circuit MCQs are made for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Frequency Variation in a Series RLC Circuit below.
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Test: Frequency Variation in a Series RLC Circuit - Question 1

If the resonant frequency in a series RLC circuit is 50kHz along with a bandwidth of 1kHz, find the quality factor.

Detailed Solution for Test: Frequency Variation in a Series RLC Circuit - Question 1

We know that Quality factor is equal to the resonant frequency divided by the bandwidth. Substituting the values from the given question, we get Q=50.

Test: Frequency Variation in a Series RLC Circuit - Question 2

What is the SI unit for quality factor?

Detailed Solution for Test: Frequency Variation in a Series RLC Circuit - Question 2

We know that Quality factor is equal to the resonant frequency divided by the bandwidth. It is one frequency divided by another hence it has no unit.

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Test: Frequency Variation in a Series RLC Circuit - Question 3

What happens to the quality factor when the bandwidth increases?

Detailed Solution for Test: Frequency Variation in a Series RLC Circuit - Question 3

We know that Quality factor is equal to the resonant frequency divided by the bandwidth. Hence as the bandwidth increases, quality factor decreases.

Test: Frequency Variation in a Series RLC Circuit - Question 4

What happens to the quality factor when resonant frequency increases?

Detailed Solution for Test: Frequency Variation in a Series RLC Circuit - Question 4

We know that Quality factor is equal to the resonant frequency divided by the bandwidth. Hence as the resonant frequency increases, quality factor also increases.

Test: Frequency Variation in a Series RLC Circuit - Question 5

Resonant frequency is when ___________

Detailed Solution for Test: Frequency Variation in a Series RLC Circuit - Question 5

The frequency of a system is said to be resonating when the value of the capacitive reactance and the inductive reactance is the same.

Test: Frequency Variation in a Series RLC Circuit - Question 6

What is the frequency in resonance condition?

Detailed Solution for Test: Frequency Variation in a Series RLC Circuit - Question 6

At resonance condition, the frequency is maximum since the inductive reactance is equal to the capacitive reactance and the voltage and current are in phase.

Test: Frequency Variation in a Series RLC Circuit - Question 7

The current leads the supply voltage in a series RLC circuit has its frequency _________ the resonant frequency.

Detailed Solution for Test: Frequency Variation in a Series RLC Circuit - Question 7

The current leads the voltage in a series RLC circuit when the supply voltage is less than the resonant voltage.

Test: Frequency Variation in a Series RLC Circuit - Question 8

 What is the power factor of a series RLC circuit under resonance condition?

Detailed Solution for Test: Frequency Variation in a Series RLC Circuit - Question 8

The power factor for a series RLC circuit in resonance condition is always 1 because the current is in phase with the voltage under resonance condition.

Test: Frequency Variation in a Series RLC Circuit - Question 9

In resonance condition, current ________ voltage.

Detailed Solution for Test: Frequency Variation in a Series RLC Circuit - Question 9

In resonance condition of a series RLC circuit, the current is always in phase with the voltage because the reactance is neither capacitive nor inductive.

Test: Frequency Variation in a Series RLC Circuit - Question 10

What is the correct formula for quality factor?

Detailed Solution for Test: Frequency Variation in a Series RLC Circuit - Question 10

The correct formula for quality factor is Q=fr/BW, where fr is the resonant frequency, BW is the bandwidth frequency and Q is the quality factor.

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