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An ohmmeter is a-
- a)moving iron instrument
- b)moving coil instrument
- c)dynamometer instrument
- d)none of the above
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
An ohmmeter is a-a)moving iron instrumentb)moving coil instrumentc)dy...
Ohmmeter, an instrument for measuring electrical resistance, which is expressed in ohms. In the simplest ohmmeters, the resistance to be measured may be connected to the instrument in parallel or in series. If in parallel (parallel ohmmeter), the instrument will draw more current as resistance increases.
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Hence, the correct option is (B)
Most Upvoted Answer
An ohmmeter is a-a)moving iron instrumentb)moving coil instrumentc)dy...
Explanation:
Moving Coil Instrument:
- An ohmmeter is a type of moving coil instrument.
- Moving coil instruments work on the principle of electromagnetic induction.
- In a moving coil instrument, a coil is suspended in a magnetic field and the current passing through the coil creates a torque that moves the coil.
Moving Iron Instrument:
- Moving iron instruments work on the principle of attraction between a fixed iron piece and a moving iron piece.
- They are commonly used for measuring AC currents and voltages.
Dynamometer Instrument:
- A dynamometer instrument is used for measuring mechanical power output.
- It can measure torque, speed, and power in mechanical systems.
Conclusion:
- Therefore, an ohmmeter is classified as a moving coil instrument as it operates based on the movement of a coil in a magnetic field to measure resistance.
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An ohmmeter is a-a)moving iron instrumentb)moving coil instrumentc)dynamometer instrumentd)none of the aboveCorrect answer is option 'B'. Can you explain this answer?
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