Скачать или смотреть Transformer Efficiency & Percentage Regulation | numerical on efficiency and percentage regulation

Welcome to Learning Vibes, where we make electrical engineering concepts easy with clear, exam-oriented explanations.
In today’s video, we solve a very important transformer efficiency and percentage regulation numerical using open-circuit (OC) and short-circuit (SC) test data.

This problem is based on a 5 kVA, 400/200 V single-phase transformer, and we use the results of the OC and SC tests taken on the HV side to compute full load efficiency and percentage regulation at 0.8 lagging power factor.
Such transformer efficiency and percentage regulation numerical problems are extremely common in diploma, degree, and competitive exams, making this tutorial essential for all electrical students.
🔹 Given Data Recap

OC Test (HV side): 400 V, 1 A, 50 W

SC Test (HV side): 12 V, 12.5 A, 60 W

Transformer rating: 5 kVA

Required: full load efficiency and percentage regulation at 0.8 lagging power factor

This forms the perfect base for understanding how to solve any transformer efficiency and percentage regulation numerical using standard transformer test methods.

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