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Electrical Engineering Electrical Cables Difficulty: Medium

The insulating material for a cable should have

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A rheostat differs from potentiometer in the respect that it ________ will be least affected due to charge in supply voltage frequency. A 470 Ω resistor and a 0.2 µF capacitor are in parallel across a 2.5 kHz ac source. The admittance, Y, in rectangular form, is Which is the most superior dielectric out of the following ? Salvage value of the plant is always