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Why do I feel electric shock when I touch someone?
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How does a residual current device (RCD) protect against electric shock?

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When does Proportional (P) Integral (I) Derivative (D) Controllers are Used
Answer : Proportional-Integral-Derivative (PID) controllers are widely used in various systems that require automatic control to maintain a desired output or state. Here's when each component is typically ... over errors, fast response, stability, and elimination of persistent small errors over time....

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A moving coil instrument gives full scale deflection of 24 mA. When a P.D. across if is 108 mV. Find the value of – (i) Series resistance for full scale deflection of 400 V. (ii) Find the power consumption.

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Derive the torque equation of 3 φ I.M. under running condition.k) Explain production of R.M.F. in 3-phase I.M. when 3 φ supply is fed to it. Draw its phasor diagram.

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Select insulating materials for following parts: (i) Insulation between heating element and base plate of electric iron. (ii) Insulation used over copper or aluminium conductor used for making coils. (iii) Transformer bushings. (iv) Insulation between transmission line and pole.

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What happens to electric flux when dielectric is inserted?

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Can electric potential be zero when the electric field is not zero?

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When a dielectric is placed in an electric field it gets polarized?

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When the electric current flows in only one direction?

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Why does my battery keep dying after I replaced it?

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Capacitor is load free component but why ampere meter shows current when capacitor bank breaker close?

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Why does current decrease when voltage increases in a capacitor?

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Why does the terminal voltage of cell decrease when current is drawn from it?

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Why is the emf of a cell greater than the terminal potential difference when the cell is used to supply current to an external resist?

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Why does the terminal potential difference of a battery decrease when the current drawn from it is increased?

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Why is the emf always even when no current is drawn through the battery?

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Why terminal voltage is greater than emf when battery is charging or discharging?

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Why the terminal potential difference of a battery decreases when the current drawn from it is increased?

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Why the potential difference across the terminals of a cell is less than its emf when a current is drawn from it?

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Why does insulation resistance decrease when temperatures increase?

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Why insulation resistance decreases when temperature increase?

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Why is the resistance higher when the wire is longer?

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