Maurice Tutor

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  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 13 Oct 2017 My Price 4.00

per-unit resistance

3-8.  A 150-MVA 15/200-kV single-phase power transformer has a per-unit resistance of 1.2 percent and a per- unit reactance of 5 percent (data taken from the transformer’s nameplate). The magnetizing impedance is j100 per unit.

(a)     Find the equivalent circuit referred to the low-voltage side of this transformer.

(b)     Calculate the voltage regulation of this transformer for a full-load current at power factor of 0.8 lagging.

(c)     Assume that the primary voltage of this transformer is a constant 15 kV, and plot the secondary voltage as a function of load current for currents from no-load to full-load. Repeat this process for power factors of 0.8 lagging, 1.0, and 0.8 leading.

Answers

Maurice Tutor
(5)
Status NEW Posted 13 Oct 2017 12:10 PM My Price 4.00

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