DC quantities only.So, a moving coil AMMETER is used to measure DC current.The reading of the moving coil instruments shows zero when they are used to measure the AC quantities.The moving iron instrument can be used to measure both AC and DC quantities. Important Points:Moving coil instrument MEASURES, the average value of QUANTITY and the SCALE is linear and uniform as the deflection is directly proportional to the current.Moving iron instrument measures, the RMS value of quantity and the scale is non-uniform as the deflection is directly proportional to the square of the current.Hotwire instruments are used to measure the true RMS value of the quantity.The combination of PMMC with the rectifier circuit measures AC as well as DC values.

"> DC quantities only.So, a moving coil AMMETER is used to measure DC current.The reading of the moving coil instruments shows zero when they are used to measure the AC quantities.The moving iron instrument can be used to measure both AC and DC quantities. Important Points:Moving coil instrument MEASURES, the average value of QUANTITY and the SCALE is linear and uniform as the deflection is directly proportional to the current.Moving iron instrument measures, the RMS value of quantity and the scale is non-uniform as the deflection is directly proportional to the square of the current.Hotwire instruments are used to measure the true RMS value of the quantity.The combination of PMMC with the rectifier circuit measures AC as well as DC values.

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AC current cannot be measured directly by _______

Electrical Engineering Indicating Instruments in Electrical Engineering . 7 months ago

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PMMC instruments:PMMC or Moving coil instruments are used to measure the DC quantities only.So, a moving coil AMMETER is used to measure DC current.The reading of the moving coil instruments shows zero when they are used to measure the AC quantities.The moving iron instrument can be used to measure both AC and DC quantities. Important Points:Moving coil instrument MEASURES, the average value of QUANTITY and the SCALE is linear and uniform as the deflection is directly proportional to the current.Moving iron instrument measures, the RMS value of quantity and the scale is non-uniform as the deflection is directly proportional to the square of the current.Hotwire instruments are used to measure the true RMS value of the quantity.The combination of PMMC with the rectifier circuit measures AC as well as DC values.

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Posted on 26 Nov 2024, this text provides information on Electrical Engineering related to Indicating Instruments in Electrical Engineering. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.

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