A 240-volt single-phase transformer secondary delivers 156.25 amperes at full load. What transformer rating does this represent?

Texas Journeyman exam practice question · Equipment & Devices

A 240-volt single-phase transformer secondary delivers 156.25 amperes at full load. What transformer rating does this represent?

A25 kVA
37.5 kVA
C45 kVA
D30 kVA

Why B is correct

Apparent power equals voltage times current: 240 × 156.25 = 37,500 volt-amperes, or 37.5 kVA. Keep units consistent and use only the factors stated; no optional method or unstated demand factor is assumed.

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A 240-volt single-phase transformer secondary delivers 156.25 amperes at full load. What transformer rating does this represent?

A 240-volt single-phase transformer secondary delivers 156.25 amperes at full load. What transformer rating does this represent?

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