The coil of a PMMC instrument has 60 turns, on a former that is 18 mm wide, the effective length of the conductor being 25 mm. It moves in a uniform field of flux density 0.5 Tesla. The control spring constant is 1.5 × 106 Nm/degree. Calculate the current required to produce a deflection of 100 degree.

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The coil of a PMMC instrument has 60 turns, on a former
that is 18 mm wide, the effective length of the conductor
being 25 mm. It moves in a uniform field of flux density 0.5
Tesla. The control spring constant is 1.5 × 106 Nm/degree.
Calculate the current required to produce a deflection of
100 degree.
Transcribed Image Text:The coil of a PMMC instrument has 60 turns, on a former that is 18 mm wide, the effective length of the conductor being 25 mm. It moves in a uniform field of flux density 0.5 Tesla. The control spring constant is 1.5 × 106 Nm/degree. Calculate the current required to produce a deflection of 100 degree.
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