Electrical Engineering · Power Systems
ओवरहेड लाइनों में उपयोग की जाने वाली इंसुलेटर सामग्री ________ होनी चाहिए और अशुद्धियों तथा दरारों से मुक्त होनी चाहिए; अन्यथा इसकी परावैद्युत क्षमता (dielectric strength) कम हो जाएगी।
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