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When a multiplier is added to an existing voltmeter for extending its range, its electromagnetic damping
- a)remains unaffected
- b)increases
- c)decreases
- d)changes by an amount depending on the controlling torque
Correct answer is option 'C'. Can you explain this answer?
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When a multiplier is added to an existing voltmeter for extending its ...
Effect of Adding a Multiplier on Electromagnetic Damping of a Voltmeter
Adding a multiplier to extend the range of a voltmeter can have an impact on its electromagnetic damping. Let's explore how this affects the damping mechanism:
- Decrease in Damping:
When a multiplier is added to a voltmeter, it increases the resistance in the circuit. This increase in resistance can lead to a decrease in the current flowing through the coil of the voltmeter, which in turn reduces the electromagnetic damping effect. As a result, the damping of the voltmeter decreases.
- Impact on Controlling Torque:
The controlling torque in a voltmeter is responsible for moving the pointer on the scale to indicate the voltage reading. When the damping decreases due to the addition of a multiplier, the controlling torque may not be sufficient to overcome the decreased damping force. This can result in inaccurate readings or slower response times of the voltmeter.
- Overall Effect:
In summary, adding a multiplier to extend the range of a voltmeter can lead to a decrease in its electromagnetic damping. This can affect the performance and accuracy of the voltmeter, especially in scenarios where precise voltage measurements are required.
Therefore, the correct answer to the question is option C: decreases.
Adding a multiplier to extend the range of a voltmeter can have an impact on its electromagnetic damping. Let's explore how this affects the damping mechanism:
- Decrease in Damping:
When a multiplier is added to a voltmeter, it increases the resistance in the circuit. This increase in resistance can lead to a decrease in the current flowing through the coil of the voltmeter, which in turn reduces the electromagnetic damping effect. As a result, the damping of the voltmeter decreases.
- Impact on Controlling Torque:
The controlling torque in a voltmeter is responsible for moving the pointer on the scale to indicate the voltage reading. When the damping decreases due to the addition of a multiplier, the controlling torque may not be sufficient to overcome the decreased damping force. This can result in inaccurate readings or slower response times of the voltmeter.
- Overall Effect:
In summary, adding a multiplier to extend the range of a voltmeter can lead to a decrease in its electromagnetic damping. This can affect the performance and accuracy of the voltmeter, especially in scenarios where precise voltage measurements are required.
Therefore, the correct answer to the question is option C: decreases.
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When a multiplier is added to an existing voltmeter for extending its range, its electromagnetic dampinga)remains unaffectedb)increasesc)decreasesd)changes by an amount depending on the controlling torqueCorrect answer is option 'C'. Can you explain this answer?
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