A recording of the output of the emf induced for star and delta are recorded.Then shape of the emf induced in Y-connected 3-phase transformer is non sinusoidal in nature due toa)3rd harmonic component of currents is absentb)3rd harmonic component of currents is presentc)negative sequence component of current is presentd)none of the mentionedCorrect answer is option 'A'. Can you explain this answer? - EduRev Electrical Engineering (EE) Question

Explore Courses UPSC Exam UPSC Test Series Free Notes EduRev Infinity

Open App

Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > A recording of the output of the emf induced ...

Join the Discussion on the App

A recording of the output of the emf induced for star and delta are recorded.Then shape of the emf induced in Y-connected 3-phase transformer is non sinusoidal in nature due to

a)
3rd harmonic component of currents is absent
b)
3rd harmonic component of currents is present
c)
negative sequence component of current is present
d)
none of the mentioned

Correct answer is option 'A'. Can you explain this answer?

FREE This question is part of

Test: ESE Electrical - 9

Attempt Test

Attempt this Test

Most Upvoted Answer

A recording of the output of the emf induced for star and delta are re...

In a Y-connected 3-phase transformer, the shape of the induced electromotive force (EMF) is generally not perfectly sinusoidal due to the presence of harmonics. However, for a balanced and symmetric Y-connected system, the 3rd harmonic component of currents is absent.
When a 3-phase system is balanced and operating in a Y-connection, the phase currents are balanced, and they flow in the phases with a 120-degree phase difference. The absence of the 3rd harmonic component in the phase currents is a characteristic of balanced Y-connected systems.
Since the absence of the 3rd harmonic component in the currents leads to a more sinusoidal shape of the EMF induced in the Y-connected 3-phase transformer, the correct answer is A: 3rd harmonic component of currents is absent.

Answered by Machine Experts · View profile

Free Test

FREE

Test: ESE Electrical - 9
150 Ques | 180 Min

Start Free Test

View all free Electrical Engineering (EE) tests

Community Answer

A recording of the output of the emf induced for star and delta are re...

Explanation:

In a Y-connected 3-phase transformer, the emf induced in each phase is non-sinusoidal in nature due to the absence of the 3rd harmonic component of currents.

Reason:

The shape of the emf induced in a Y-connected 3-phase transformer is determined by the nature of the currents flowing through the windings. In a balanced three-phase system, the currents in the three phases are sinusoidal and have a fundamental frequency. However, they also contain harmonic components at multiples of the fundamental frequency.

Star Connection:

In a star-connected system, the three windings are connected together at a common neutral point, forming a Y-shaped configuration. The current flowing through each winding is divided into two paths - one path through the winding itself and the other path through the common neutral point.

Delta Connection:

In a delta-connected system, the three windings are connected in a closed-loop, forming a triangular or delta-shaped configuration. The current flowing through each winding is the actual current flowing through that winding.

Induced EMF:

The emf induced in each winding of a transformer is directly proportional to the rate of change of flux linkage. In a Y-connected transformer, the flux linkage in each winding is determined by the current flowing through that winding.

Non-Sinusoidal Nature:

In a Y-connected transformer, the absence of the 3rd harmonic component of currents results in a non-sinusoidal shape of the induced emf. The 3rd harmonic component of currents is absent because the 3rd harmonic currents flowing through the windings cancel out at the common neutral point in a Y-connected system.

Conclusion:

Therefore, the shape of the emf induced in a Y-connected 3-phase transformer is non-sinusoidal in nature due to the absence of the 3rd harmonic component of currents.

Share via Whatsapp

Attention Electrical Engineering (EE) Students!

To make sure you are not studying endlessly, EduRev has designed Electrical Engineering (EE) study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Electrical Engineering (EE).

Network Theory (Electric Circuits)

GATE Electrical Engineering (EE) Mock Test Series 2025

General Aptitude for GATE

GATE Notes & Videos for Electrical Engineering

View all answers Start learning for free

< Previous Question Next Question >

Explore Courses for Electrical Engineering (EE) exam

Similar Electrical Engineering (EE) Doubts

A recording of the output of the emf induced for star and delta are recorded.Then shape of the emf induced in Y-connected 3-phase transformer is non sinusoidal in nature due to

View answer

Two 300 MVA, 22 kV, 3-phase, 60 Hz alternators are connected by a transmission line having transformers at both ends as shown in the single line diagram given belowThe transformer (T1) between the generator 1 and the transmission line is a Δ-Y connected 3-phase transformer bank made up of three single phase transformers each rated at 120 MVA, 22 kV/127 kV with leakage reactance of 8%. The generator 2 is connected to the line by a 3-phase, 300 MVA, 22 kV/220 kV, Δ-Y transformer (T2) with 10% leakage reactance. The star side of T1 and T2 are grounded. The zero sequence reactance of the transmission line is 81 Ω. Considering the MVA rating of T1 as the base, the zero-sequence network of the complete system is (Assume Xg1and Xg2are the zero sequence reactance of the generators respectively)

View answer

Two generating stations are connected together through transformers and a transmission line as shown in figure. The component specification are given as followingGenerator G1 : 11 kV, 40 MVA, 15%Generator G2 : 11 kV, 20 MVA, 10%Generator G3 : 11 kV, 20 MVA, 10%Transformer T1 : 40 MVA, 11/66 kV, 15%Transformer T2 : 40 MVA, 66/11 kV, 15%Transformer T3: 5 MVA, 11/66 kV, 8%If a three phase fault occurs as shown in figure, the fault current in kA at LV side of is _____. (Correct upto two decimal plac e) Correct answer is '2.6'. Can you explain this answer?

View answer

Two generating stations are connected together through transformers and a transmission line as shown in figure. The component specification are given as followingGenerator G1 : 11 kV, 40 MVA, 15%Generator G2 : 11 kV, 20 MVA, 10%Generator G3 : 11 kV, 20 MVA, 10%Transformer T1 : 40 MVA, 11/66 kV, 15%Transformer T2 : 40 MVA, 66/11 kV, 15%Transformer T3: 5 MVA, 11/66 kV, 8%If a three phase fault occurs as shown in figure, the fault current in kA at LV side of is _____. (Correct upto two decimal plac e) Correct answer is '2.6'. Can you explain this answer?

View answer

A V-V connected transformer can be connected in parallel to delta-delta connected transformer but not to

View answer

Top Courses for Electrical Engineering (EE)View all

Network Theory (Electric Circuits)

GATE Electrical Engineering (EE) Mock Test Series 2025

General Aptitude for GATE

GATE Notes & Videos for Electrical Engineering

Engineering Mathematics

Top Courses for Electrical Engineering (EE)

View all

A recording of the output of the emf induced for star and delta are recorded.Then shape of the emf induced in Y-connected 3-phase transformer is non sinusoidal in nature due toa)3rd harmonic component of currents is absentb)3rd harmonic component of currents is presentc)negative sequence component of current is presentd)none of the mentionedCorrect answer is option 'A'. Can you explain this answer?

Share with a Friend

Answer this doubt

Question Description
A recording of the output of the emf induced for star and delta are recorded.Then shape of the emf induced in Y-connected 3-phase transformer is non sinusoidal in nature due toa)3rd harmonic component of currents is absentb)3rd harmonic component of currents is presentc)negative sequence component of current is presentd)none of the mentionedCorrect answer is option 'A'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about A recording of the output of the emf induced for star and delta are recorded.Then shape of the emf induced in Y-connected 3-phase transformer is non sinusoidal in nature due toa)3rd harmonic component of currents is absentb)3rd harmonic component of currents is presentc)negative sequence component of current is presentd)none of the mentionedCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A recording of the output of the emf induced for star and delta are recorded.Then shape of the emf induced in Y-connected 3-phase transformer is non sinusoidal in nature due toa)3rd harmonic component of currents is absentb)3rd harmonic component of currents is presentc)negative sequence component of current is presentd)none of the mentionedCorrect answer is option 'A'. Can you explain this answer?.

Solutions for A recording of the output of the emf induced for star and delta are recorded.Then shape of the emf induced in Y-connected 3-phase transformer is non sinusoidal in nature due toa)3rd harmonic component of currents is absentb)3rd harmonic component of currents is presentc)negative sequence component of current is presentd)none of the mentionedCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Electrical Engineering (EE). Download more important topics, notes, lectures and mock test series for Electrical Engineering (EE) Exam by signing up for free.

Here you can find the meaning of A recording of the output of the emf induced for star and delta are recorded.Then shape of the emf induced in Y-connected 3-phase transformer is non sinusoidal in nature due toa)3rd harmonic component of currents is absentb)3rd harmonic component of currents is presentc)negative sequence component of current is presentd)none of the mentionedCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of A recording of the output of the emf induced for star and delta are recorded.Then shape of the emf induced in Y-connected 3-phase transformer is non sinusoidal in nature due toa)3rd harmonic component of currents is absentb)3rd harmonic component of currents is presentc)negative sequence component of current is presentd)none of the mentionedCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for A recording of the output of the emf induced for star and delta are recorded.Then shape of the emf induced in Y-connected 3-phase transformer is non sinusoidal in nature due toa)3rd harmonic component of currents is absentb)3rd harmonic component of currents is presentc)negative sequence component of current is presentd)none of the mentionedCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of A recording of the output of the emf induced for star and delta are recorded.Then shape of the emf induced in Y-connected 3-phase transformer is non sinusoidal in nature due toa)3rd harmonic component of currents is absentb)3rd harmonic component of currents is presentc)negative sequence component of current is presentd)none of the mentionedCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice A recording of the output of the emf induced for star and delta are recorded.Then shape of the emf induced in Y-connected 3-phase transformer is non sinusoidal in nature due toa)3rd harmonic component of currents is absentb)3rd harmonic component of currents is presentc)negative sequence component of current is presentd)none of the mentionedCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Electrical Engineering (EE) tests.

Explore Courses for Electrical Engineering (EE) exam