Physics · Electrical Measurements
In a single-phase induction energy meter, the lag adjustment is such that the pressure coil flux lags the applied voltage by 88° instead of 90°. What are the percentage errors introduced when measuring power at unity power factor and 0.5 lagging power factor respectively?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1-0.061%, -6.1%✓
- 2+0.061%, -5.1%
- 3-0.071%, +6.1%
- 4-7.1%, -6.1%
Correct answer
-0.061%, -6.1%
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