Electrical Engineering > GATE 2018 > Measuring Instruments
A 0-1 Ampere moving iron ammeter has an internal resistance of 50 mΩ and inductance of 0.1 mH. A shunt coil is connected to extend its range to 0-10 Ampere for all operating frequencies. The time constant in milliseconds and resistance in mΩ of the shunt coil respectively are
A
2, 5.55
B
2, 1
C
2.18, 0.55
D
11.1,2

Correct : a

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moving iron ammeter shunt coil extension GATE Electrical Engineering 2018 electrical engineering gate time constant calculation shunt coil resistance ammeter shunt GATE 2018 question 37 time constant ms shunt resistance calculation

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