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Calculate the value measured by Moving Iron when a sinusoidal voltage signal V(t) = √2sin(3ωt) is applied to it.

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Calculate the value measured by Moving Iron when a sinusoidal voltage signal V(t) = √2sin(3ωt) is applied to it.

(a) 2 V

(b) 1 V

(c) 3 V

(d) 4 V

This question was posed to me in an online quiz.

My query is from Nature of Traction Load in chapter Traction Drives of Electric Drives

1 Answer

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Right choice is (b) 1 V

The explanation is: Moving iron instrument measures the r.m.s value of the input signal. The r.m.s value of the sinusoidal signal is √2÷√2 = 1 V.

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