In the transformer experimentperformed in the lab, following coilswere used to form a stepdown transformer:Calculated ValuesLoad Resistance used in ohms400200Primary coil turns (Np)Secondary coil turns (Ns)10022WActual Voltage Gain10 22WAnd the observed experimental values aretabulated below:Ideal Voltage GainMeasured ExperimentalInput Power in wattsValuesOutput Power in wattsInputInputOutputOutputvoltage CurrentVoltagecurrentEfficiency of the transformer inVp [V]Ip [A]Vs [V]Is [A]percentage5.760.1822.1460.162Calculate the following:

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Electrical Engineering

e transformer

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 3.9P

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Concept explainers

Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.

Question

In the transformer experiment
performed in the lab, following coils
were used to form a step
down transformer:
Calculated Values
Load Resistance used in ohms
400
200
Primary coil turns (Np)
Secondary coil turns (Ns)
1002
2W
Actual Voltage Gain
10 2
2W
And the observed experimental values are
tabulated below:
Ideal Voltage Gain
Measured Experimental
Input Power in watts
Values
Output Power in watts
Input
Input
Output
Output
voltage Current
Voltage
current
Efficiency of the transformer in
Vp [V]
Ip [A]
Vs [V]
Is [A]
percentage
5.76
0.182
2.146
0.162
Calculate the following:

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