FULL load current IL as shown in the figureThe moving coil is connected across the supply is called a voltage coil (or) pressure coil, which will carry a current IP as shown in the figureBoth coils are connected in parallel so that two different currents will flow through the coils IL and IP respectivelyMoving Iron (MI) type INSTRUMENTS can be used for both AC & DC measurements. But Moving Iron connected through current TRANSFORMER block DC supply. So that Moving Iron connected through current Transformer is only used for AC measurements.Rectifier type instruments are used for both AC & DC measurements.Induction type instruments are only used for AC measurements.Permanent Magnet Moving Coil (PMMC) is only used for DC measurements.

"> FULL load current IL as shown in the figureThe moving coil is connected across the supply is called a voltage coil (or) pressure coil, which will carry a current IP as shown in the figureBoth coils are connected in parallel so that two different currents will flow through the coils IL and IP respectivelyMoving Iron (MI) type INSTRUMENTS can be used for both AC & DC measurements. But Moving Iron connected through current TRANSFORMER block DC supply. So that Moving Iron connected through current Transformer is only used for AC measurements.Rectifier type instruments are used for both AC & DC measurements.Induction type instruments are only used for AC measurements.Permanent Magnet Moving Coil (PMMC) is only used for DC measurements.

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Following statements are given for electrodynamometer-type instruments:a) It is used for a.c. quantities onlyb) It is used for both a.c. and d.c. quantitiesc) It can be used to measure power and frequencyd) It has only one coilOut of the above statements, which are correct?

Electrical Engineering Indicating Instruments in Electrical Engineering . 8 months ago

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Electrodynamometer instrument as a wattmeter:An electrodynamometer instrument can be used as a wattmeter to measure power and frequency.An electrodynamometer instrument can be used for both a.c. and d.c. quantities.Two fixed coils are connected in series with the load are called current coils; These will carry a FULL load current IL as shown in the figureThe moving coil is connected across the supply is called a voltage coil (or) pressure coil, which will carry a current IP as shown in the figureBoth coils are connected in parallel so that two different currents will flow through the coils IL and IP respectivelyMoving Iron (MI) type INSTRUMENTS can be used for both AC & DC measurements. But Moving Iron connected through current TRANSFORMER block DC supply. So that Moving Iron connected through current Transformer is only used for AC measurements.Rectifier type instruments are used for both AC & DC measurements.Induction type instruments are only used for AC measurements.Permanent Magnet Moving Coil (PMMC) is only used for DC measurements.

Posted on 09 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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