SSC SSC JE Electrical 2025 Mock Test Series (Paper 1 & Paper 2) Electrical and Electronics Measurements Indicating Instruments
In induction type voltmeters and ammeters, the instantaneous torque T is:
1
∝ (φ1i1 + φ2i2)
2
∝ (φ1i2 - φ2i1)
3
∝ (φ1i2 + φ2i1)
4
∝ (φ1i1 - φ2i2)