A moving iron instrument gives correct reading when used at ?->(Show Answer!)

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1. A moving iron instrument gives correct reading when used at

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MCQ->Assertion (A): Moving iron instrument can be used on ac or dc.Reason (R): In a moving iron instrument deflecting torque is proportional to square of current.

MCQ->A moving iron instrument gives correct reading when used at....

MCQ->Assertion (A): Electrodynamic instrument is not used as ammeter or voltmeter.Reason (R): Electrodynamic instrument is more costly than PMMC and moving iron instrument.

MCQ->Consider the following statements about a moving iron instrument It is an unpolarised instrument.It has permanent magnet.It has a fixed coil.It has two iron vanes. Of these statements....

MCQ->The coil of a moving iron instrument has a resistance of 500 Ω and an inductance of 1 H. It reads 250 V when a 250 V dc is applied. If series resistance is 2000 Ω, its reading when fed by 250 V, 50 Hz ac will be....

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