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Electrical Engineering (EE) Exam  >  Electrical Engineering (EE) Tests  >  Power Systems  >  Test: One Line Diagram - Electrical Engineering (EE) MCQ

Test: One Line Diagram - Electrical Engineering (EE) MCQ


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5 Questions MCQ Test Power Systems - Test: One Line Diagram

Test: One Line Diagram for Electrical Engineering (EE) 2024 is part of Power Systems preparation. The Test: One Line Diagram questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The Test: One Line Diagram MCQs are made for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: One Line Diagram below.
Solutions of Test: One Line Diagram questions in English are available as part of our Power Systems for Electrical Engineering (EE) & Test: One Line Diagram solutions in Hindi for Power Systems course. Download more important topics, notes, lectures and mock test series for Electrical Engineering (EE) Exam by signing up for free. Attempt Test: One Line Diagram | 5 questions in 15 minutes | Mock test for Electrical Engineering (EE) preparation | Free important questions MCQ to study Power Systems for Electrical Engineering (EE) Exam | Download free PDF with solutions
Test: One Line Diagram - Question 1
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A three phase transformer has a nameplate rating of 30 MVA, 230Y/69Y kV with a leakage-reactance of 10% and the transformer connection is wye-wye. Choosing a base of 30MVA and 230 kV on high voltage side, the transformer reactance referred to the low voltage side will be _______(in ohms).

Detailed Solution for Test: One Line Diagram - Question 1

X Ω = Xpu * Xb(LV) = 0.1 * 158.87 = 15.87 Ω.

Test: One Line Diagram - Question 2
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Single line diagram does not represents:

Detailed Solution for Test: One Line Diagram - Question 2

Single line diagram is a representation of balanced power system on per phase basis with neutral eliminated. Neutral wire is not shown in single line diagram. Winding connections (star or neutral) is represented beside the symbol of transformer with its Impidance and rating.

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Test: One Line Diagram - Question 3
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Reactance diagram contains which of the following?

Detailed Solution for Test: One Line Diagram - Question 3

Reactance diagram contains only reactance of synchronous machines, transmission line and Transformers. Static loads like induction motors are neglected in diagram.

Test: One Line Diagram - Question 4
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What is the main purpose of reactance diagram?
Detailed Solution for Test: One Line Diagram - Question 4

The main purpose of reactance diagram is fault analysis. Load flow analysis is done by the help of Impedance diagram. All these diagrams are made using symmetrical component analysis method on per phase basis.

Test: One Line Diagram - Question 5
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Impedance diagram is used for analysis of __________
Detailed Solution for Test: One Line Diagram - Question 5

Impidance diagram is made for the analysis of load flow. Fault analysis is doen by the help of reactance diagram. All these diagrams are made using symmetrical component analysis method on per phase basis.

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One Line Diagram MCQs with Answers

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