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For a triac, the firing delay angle during the positive half cycle has what relationship to the firing delay angle during the negative half cycle? A. The two firing delay angles are always equal to each other. B. The positive firing delay angle is always less than the negative firing delay angle. C. The positive firing delay angle is always greater than the negative firing delay angle. D. None of the choices 17. For a triac, the firing delay angle during the positive half cycle has what relationship to the

For a triac, the firing delay angle during the positive half cycle has what relationship to the firing delay angle during the negative half cycle? A. The two firing delay angles are always equal to each other. B. The positive firing delay angle is always less than the negative firing delay angle. C. The positive firing delay angle is always greater than the negative firing delay angle. D. None of the choices 17. For a triac, the firing delay angle during the positive half cycle has what relationship to the

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Russell E. Smith
Chapter8: Basic Electric Motors
Section: Chapter Questions
Problem 31RQ
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Please choose the correct answer. 16. For a triac, the firing delay angle during the positive half cycle has what relationship to the firing delay angle during the negative half cycle? A. The two firing delay angles are always equal to each other. B. The positive firing delay angle is always less than the negative firing delay angle. C. The positive firing delay angle is always greater than the negative firing delay angle. D. None of the choices 17. For a triac, the firing delay angle during the positive half cycle has what relationship to the firing delay angle during the negative half cycle? A. The two firing delay angles are always equal to each other. B. The positive firing delay angle is always less than the negative firing delay angle. C. The positive firing delay angle is always greater than the negative firing delay angle. D. None of the choices 18. Compared to the amount of average power that the entire ac line waveform would deliver to a given load, how much power would an SCR control circuit that is triggered at 135o (conducting angle = 45o) deliver? A. Half as much B. One fourth as much C. One eight as much D. Less than one eight as much
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