Q157
The full-scale deflecting torque of a 20 A moving-iron ammeter is 6 × 10-5 N-m. What is the rate of change of self-inductance with respect to the deflection of the pointer of the ammeter at full scale?
A.
0.5 µH/rad
B.
0.2 µH/rad
C.
1.3 µH/rad
D.
0.3 µH/rad
AnswerAnswer: Option D
Solution
Answer: Option D
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