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Understanding A.C. Circuits Values

Authored by Dr.M.P.Flower Dept

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Understanding A.C. Circuits Values
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does RMS stand for in electrical engineering?

Root Mean Standard

Root Mean Square

Real Mean Square

Random Measurement System

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is the average value of an A.C. signal calculated?

The average value is found by taking the maximum value of the signal.

The average value is calculated by measuring the peak-to-peak voltage.

The average value of an A.C. signal is calculated by integrating the signal over one complete cycle and dividing by the period.

The average value is determined by the root mean square of the signal.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula for calculating the RMS value of a sinusoidal wave?

RMS = A × 2

RMS = A / √2

RMS = A / 2

RMS = A × √2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is the RMS value important in A.C. circuits?

RMS value measures the frequency of the A.C. signal.

RMS value is only relevant for D.C. circuits.

The RMS value allows for accurate power calculations in A.C. circuits.

RMS value is used to determine the voltage drop in resistors.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the relationship between average value and RMS value for a pure sine wave?

RMS value = Average value; Average value = Peak value / 2

RMS value = Peak value / √2; Average value = 0 for a pure sine wave.

RMS value = Peak value; Average value = Peak value / 2

RMS value = Peak value / 2; Average value = Peak value / √2

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does the shape of a waveform affect its average and RMS values?

The shape of a waveform directly influences its average and RMS values due to amplitude distribution and symmetry.

Waveform shape has no effect on average and RMS values.

Average and RMS values are constant regardless of waveform shape.

Only the frequency of the waveform affects average and RMS values.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the average value of a full-wave rectified sine wave?

4/π

π/2

2/π

1/π

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