EXPERIMENT NO.1:11. ΝΑMΕOΕEXPERIMENT:Polarity and turn ratio of a single phase transformer.1.2. OBJECTIVE:To verification (demonstration) of the transformation ratio (turn ratio) or polarity of asingle phase transformer.1.10. QUESTIONS AND DISCUSSION:1. A transformer is rated at 440/115 V and volt-ampere at 50HZ. State which of the windingsmust be made with thicker conductor?2. A transformer is rated at 440/115 V and 1.2KVA at 50HZ. The 115V winding rated of thetransformer is connected to a resistor 115Oresistance. What will be the current flowingthrough this resistance?3. A transformer has its primary winding made of two sections each has 1000 turns andsecondary winding has 500 turns as shown in Figure bellow. If 50 V secondary output is to beobtained, what must be the voltage applied to the primary winding in the following casesneglecting saturation and leakage.Case (1) voltage applied between P, and P, with Pz and P3 joined together.Case (2) voltage applied between P and P2 with P3 and P4 open and isolated.Case (3) voltage applied between P, and P, with Pg connected to P, and P, connected to Pa.

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1.10. QUESTIONS AND DISCUSSION: 1. A transformer is rated at 440/115 V and volt-ampere at 50HZ. State which of the windings must be made with thicker conductor?

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 3.28MCQ

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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

EXPERIMENT NO.1:
11. ΝΑMΕOΕEXPERIMENT:
Polarity and turn ratio of a single phase transformer.
1.2. OBJECTIVE:
To verification (demonstration) of the transformation ratio (turn ratio) or polarity of a
single phase transformer.
1.10. QUESTIONS AND DISCUSSION:
1. A transformer is rated at 440/115 V and volt-ampere at 50HZ. State which of the windings
must be made with thicker conductor?
2. A transformer is rated at 440/115 V and 1.2KVA at 50HZ. The 115V winding rated of the
transformer is connected to a resistor 115Oresistance. What will be the current flowing
through this resistance?
3. A transformer has its primary winding made of two sections each has 1000 turns and
secondary winding has 500 turns as shown in Figure bellow. If 50 V secondary output is to be
obtained, what must be the voltage applied to the primary winding in the following cases
neglecting saturation and leakage.
Case (1) voltage applied between P, and P, with Pz and P3 joined together.
Case (2) voltage applied between P and P2 with P3 and P4 open and isolated.
Case (3) voltage applied between P, and P, with Pg connected to P, and P, connected to Pa.

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