Choose the correct statement of a no load singlephase transformer from the followingO a. The magnetizing component of no loadcurrent (Im) leads the core loss component ofno load current (Ic)O b. The magnetizing component of no loadcurrent (Im) lags the core lossComponent ofno load current (Ic)O c. The magnetizing component of no loadcurrent (Im) and the core loss component ofno load current (Ic) are in phase each otherO d. The magnetizing component of no loadcurrent (Im) leads the core loss component of

The magnetizing component of no load current Im lead the core loss component of no load current Ic.…

Choose the correct statement of a no load single phase transformer from the following O a. The magnetizing component of no load current (Im) leads the core loss component of no load current (Ic) O b. The magnetizing component of no load current (Im) lags the core loss Eomponent of no load current (Ic) O c. The magnetizing component of no load current (Im) and the core loss component of no load current (Ic) are in phase each other O d. The magnetizing component of no load current (Im) leads the core loss component of

Choose the correct statement of a no load single phase transformer from the following O a. The magnetizing component of no load current (Im) leads the core loss component of no load current (Ic) O b. The magnetizing component of no load current (Im) lags the core loss Eomponent of no load current (Ic) O c. The magnetizing component of no load current (Im) and the core loss component of no load current (Ic) are in phase each other O d. The magnetizing component of no load current (Im) leads the core loss component of

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.6P

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Similar questions

For a short-circuit test on a 2-winding transformer, with one winding shorted, can you apply the rated voltage on the other winding? (a) Yes (b) No
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A single-phase 50-kVA,2400/240-volt,60-Hz distribution transformer has a 1-ohm equivalent leakage reactance and a 5000-ohm magnetizing reactance referred to the high-voltage side. If rated voltage is applied to the high-voltage winding, calculate the open-circuit secondary voltage. Neglect I2RandGc2V losses. Assume equal series leakage reactances for the primary and the referred secondary.
With the American Standard notation, in either a Y-or-Y transformer, positive- sequen quantities on the high-voltage side shall lead their corresponding quantities on the low-voltage side by 30. (a) True (b) False
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A single-phase 50-kVA,2400/240-volt,60-Hz distribution transformer is used as a step-down transformer at the load end of a 2400-volt feeder whose series impedance is (1.0+j2.0) ohm. The equivalent series impedance of the transformer is (1.0+j2.5) ohms referred to the high-voltage (primary) side. The transformer is delivering rated load at a 0.8 power factor lagging and at a rated secondary voltage. Neglecting the transformer exciting current, determine (a) the voltage at the transformer primary terminals, (b) the voltage at the sending end of the feeder, and (c) the real and reactive power delivered to the sending end of the feeder.
The ideal transformer windings are eliminated from the per-unit equivalent circuit of a transformer. (a) True (b) False
The ratings of a three-phase, three-winding transformer are Primary: Y connected, 66kV,15MVA Secondary: Y connected, 13.2kV,10MVA Tertiary: connected, 2.3kV,5MVA Neglecting resistances and exciting current, the leakage reactances are: XPS=0.09 per unit on a 15-MVA,66-kV base XPT=0.08 per unit on a 15-MVA,66-kV base XST=0.05 per unit on a 10-MVA,13.2-kV base Determine the per-unit reactances of the per-phase equivalent circuit using a base of 15 MVA and 66 kV for the primary.
Rework Problem 3.14 if the transformer is delivering rated load at rated secondary voltage and at (a) unity power factor, (b) 0.8 power factor leading. Compare the results with those of Problem 3.14. -
For developing per-unit equivalent circuits of single-phase three-winding transformer, a common Sbase is selected for all three windings and voltage bases are selected in proportion to the rated voltage of the windings (a) True (b) False
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