railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical and Electronics Measurements Measurement of Power
द्वि-वाटमीटर विधि में, यदि w1 = v1 I1 cos(30° - ϕ), w2 = v1 I1 cos(30° + ϕ), तो प्रतिघात शक्ति Q?
1
1.732 (w1 - w2)
2
0.707 (w1 - w2)
3
1.732 (w1 + w2)
4
1.414 (w1 - w2)