Q.2 (a) What is it necessary to introduce a cylindrical soft iron core inside the coil of the d'Arsonval meter? (2 marks

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Q.2 (a) What is it necessary to introduce a cylindrical soft iron core inside the coil of the d'Arsonval meter? (2 marks

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Q 2 A What Is It Necessary To Introduce A Cylindrical Soft Iron Core Inside The Coil Of The D Arsonval Meter 2 Marks 1
Q 2 A What Is It Necessary To Introduce A Cylindrical Soft Iron Core Inside The Coil Of The D Arsonval Meter 2 Marks 1 (39.83 KiB) Viewed 20 times
Q.2 (a) What is it necessary to introduce a cylindrical soft iron core inside the coil of the d'Arsonval meter? (2 marks) (b) A d'Arsonval meter has a resistance of 25 2 and its sensitivity is 2009. How will you convert it into an ammeter of range 0 - 8 A? (4 marks) (c) An ohmmeter as shown in Figure Q.2c has a meter movement with a full-scale deflection 5 mA with internal resistor 100 22. (4 marks) Rm R w 30 V. 3 RX mA Figure Q.2c The ohmmeter is zeroed and then an unknown resistance Ry is measured, where the meter show at the quarter-scale deflection from the full scale. Find Rx.
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