engineering recuitment GATE EE 2023-24 Test Series Electrical and Electronics Measurements Measurement of Power
Two wattmeters measure a three-phase load
W1 = VL IL cos (30 - ϕ)
W2 = VL IL cos (30 + ϕ)
The correct statement(s) is/are:
1. Active Power = W1 + W2
2. Active Power = √3 VLIL cos ϕ
3. Reactive Power = √3(W1 - W2)
4. Reactive Power = √3 VLIL sin ϕ
5. Power factor = \(cos\phi = cos\; {\rm{ta}}{{\rm{n}}^{ - 1}}\left( {\frac{{√ 3 \left( {{W_1} - {W_2}} \right)}}{{{W_1} + {W_2}}}} \right)\)
1
1 and 3 Only
2
1, 3 and 5 Only
3
1, 2, 3, 4 and 5
4
All are Incorrect