Question

A single-phase transformer rated 75 kVA, 8000/240 V is given the short circuit test. With the secondary terminals short-circuited, 440 V, 60 Hz is impressed on the primary, which then draws rated current and 1125 watts. Solve for the percentage resistance of the transformer.

Name: a single phase transformer rated 75kva 8000240v is given the short circuit test with the secondary terminals short circuited 440v 60hz is impressed on the primary which then draws rated curr 45369
Uploaded: 2023-06-18T01:40:50-08:00
Duration: 1 min 35 s
Channel: Adi S
Description: a single phase transformer rated 75kva 8000240v is given the short circuit test with the secondary terminals short circuited 440v 60hz is impressed on the primary which then draws rated curr 45369

          A single-phase transformer rated 75 kVA, 8000/240 V is given the short circuit test. With the secondary terminals short-circuited, 440 V, 60 Hz is impressed on the primary, which then draws rated current and 1125 watts. Solve for the percentage resistance of the transformer.

Added by William E.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Adi S

06/18/2023

Step 1

First, we need to find the rated current of the primary and secondary windings. Rated current of primary (I1) = Rated kVA / Primary voltage I1 = \frac{75,000}{8,000} = 9.375 A Rated current of secondary (I2) = Rated kVA / Secondary voltage I2 = Show more…

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A single-phase transformer rated 75 kVA, 8000/240 V is given the short circuit test. With the secondary terminals short-circuited, 440 V, 60 Hz is impressed on the primary, which then draws rated current and 1125 watts. Solve for the percentage resistance of the transformer.