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The voltage coil of a single phase house energy meter

  • a)
    is highly resistive

  • b)
    is highly inductive

  • c)
    is highly capacitive 

  • d)
    has a phase angle equal to load power factor angle.

Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
The voltage coil of a single phase house energy metera)is highly resis...
Explanation:

  • The voltage coil of a single-phase house energy meter is made up of a large number of turns of fine wire wound on a laminated core.

  • The voltage coil is connected across the supply voltage, and it produces a magnetic field proportional to the voltage, which is used to drive the rotor of the meter.

  • The voltage coil of a single-phase house energy meter is highly inductive because of the large number of turns of wire used in its construction.

  • The inductance of the coil is necessary to provide a high impedance to the flow of current through the coil, which ensures that the voltage across it is proportional to the supply voltage.

  • The phase angle of the voltage coil is not equal to the load power factor angle but is dependent on the inductance and resistance of the coil.

  • The power factor of the load only affects the phase angle of the current coil, which is connected in series with the load and is used to measure the current.

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The voltage coil of a single phase house energy metera)is highly resistiveb)is highly inductivec)is highly capacitived)has a phase angle equal to load power factor angle.Correct answer is option 'B'. Can you explain this answer?
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