Question: In accordance with NETA and IEEE standards the correct maintenance test voltage (dc) for 5kV rated EPR 100% insulation level cable is?
14kV
11kV
9kV
5kV
18kV
According to Table 100.6.1, the answer is 28. perhaps i am missing something.
[Transformers]
1. A wye-delta transformer has a primary line voltage of 7200 V and a secondary voltage of 360 V. What is the turns ratio?
Your Answer: 20:1
Correct Answer: 11.55:1
Help: [What is the turns ratio?]
A 4160V circuit is equipped with 200/5 CTs, at full scale what should the panel ammeter read if the circuit was operating with a power factor of 0.8%?
Should the question provide primary side amps so I can convert to Panel readings using CT ratio?
7200/360 = 20
20/1.732 = 11.55 Turns ratio
Convert the vector (–1.0, 1.0) into magnitude/angle form.
Answers have -45, 0, 2, 45, and 135 degrees as potentials. -1,1 is in the third quadrant, meaning the angles should be between 180 and 270 degrees (in this case 215), vice the I believe 135 degree which is marked as the correct answer.
