Question

A travelling wave of 500/1/55 means a crest value of

• A. \(500\,\text{kV}\) with rise time of 1 ms and fall time of 55 ms
• B. \(500\,\text{kV}\) with rise time of 1 \(\mu\)s and fall time of 55 ms
• C. \(500\,\text{kV}\) with rise time of 1 \(\mu\)s and fall time of 55 \(\mu\)s
• D. \(500\,\text{kV}\) with rise time of 1 ms and fall time of 55 \(\mu\)s

Hint:

Waveform notation like “500/1/55” should be read as: (peak value)/(rise time in \(\mu\)s)/(fall time in \(\mu\)s).

Answer 1

The Correct Option is A

The notation "500/1/55" describes a standard impulse waveform where:
- 500 kV is the peak (crest) voltage
- 1 \(\mu\)s is the rise time - 55 \(\mu\)s is the fall time So the correct interpretation is 500 kV with rise time of 1 \(\mu\)s and fall time of 55 \(\mu\)s.