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20151223 One question per day

2015-12-23View Original

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20151223 Daily Question: Rewards are as follows: 1-3 points for participation, plus 3-5 points if the answer is correct along with an analysis. The main causes of power system power-frequency overvoltage are: ( ) Multiple choice A. Ground fault ； B. Load shedding ； C. Capacitive effect of an unloaded line ； D. Lightning effect. Answers ABC
Reply #22015-12-23
A, B, C, ———————– ———————– ———————– ———————–
Reply #32015-12-23
The main causes of power system power-frequency overvoltage are: (ABC) A. Ground fault； B. Load shedding ； C. Capacitive effect of an unloaded line ； D. Lightning effect.
Reply #42015-12-23
The main causes of power system power-frequency overvoltage are: (B C D) A. Ground fault； B. Load shedding ； C. Capacitive effect of an unloaded line ； D. Lightning effect.
Reply #52015-12-23
The main causes of power system power-frequency overvoltage are: (ABC)
Reply #62015-12-23
The main causes of power system power-frequency overvoltage are: (AB) Multiple choice A. Ground fault； B. Load shedding ； C. Capacitive effect of an unloaded line ； D. Lightning effect.
Reply #72015-12-23
The main causes of power system power-frequency overvoltage are: (A B C) A. Ground fault； B. Load shedding ； C. Capacitive effect of an unloaded line ； D. Lightning effect.
Reply #82015-12-23
The main causes of power system power-frequency overvoltage are: ( ) Multiple choice C. The capacitive effect of unloaded lines； D. Lightning effect.

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Translated at 2026-07-21 01:04:32

Original: https://bbs.hcbbs.com/thread-1522318-1-1.html

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