What is the peak-to-peak value if the RMS current is 35 amps?

Study for the 3rd Class Power Engineering (3A2) Exam. Explore multiple choice questions with hints and explanations. Prepare for your certification!

To find the peak-to-peak value from the RMS (Root Mean Square) current, you can use the relationship between these two measurements in an alternating current (AC) system. The RMS value is a way of expressing an equivalent direct current (DC) value to ensure that the heating effect, or power dissipated in a resistive load, is the same as that produced by a DC current.

For a sinusoidal waveform, the peak (or maximum) value of the current is related to the RMS value by the formula:

[ \text{Peak} = \text{RMS} \times \sqrt{2} ]

Substituting the RMS value into the formula gives:

[ \text{Peak} = 35 , \text{amps} \times \sqrt{2} \approx 35 \times 1.414 = 49.9 , \text{amps} ]

The peak-to-peak value represents the total range of the waveform from its maximum positive value to its maximum negative value, which is twice the peak value:

[ \text{Peak-to-Peak} = 2 \times \text{Peak} \approx 2 \times 49.9 = 99

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy