All Courses
Get the App Signup / Login
Sign in Open App
Electrical Engineering (EE) Exam  >  Electrical Engineering (EE) Tests  >  Power Electronics  >  Test: Three Phase 180 Degree Mode VSI - Electrical Engineering (EE) MCQ

Test: Three Phase 180 Degree Mode VSI - Electrical Engineering (EE) MCQ


Test Description

10 Questions MCQ Test Power Electronics - Test: Three Phase 180 Degree Mode VSI

Test: Three Phase 180 Degree Mode VSI for Electrical Engineering (EE) 2024 is part of Power Electronics preparation. The Test: Three Phase 180 Degree Mode VSI questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The Test: Three Phase 180 Degree Mode VSI MCQs are made for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Three Phase 180 Degree Mode VSI below.
Solutions of Test: Three Phase 180 Degree Mode VSI questions in English are available as part of our Power Electronics for Electrical Engineering (EE) & Test: Three Phase 180 Degree Mode VSI solutions in Hindi for Power Electronics course. Download more important topics, notes, lectures and mock test series for Electrical Engineering (EE) Exam by signing up for free. Attempt Test: Three Phase 180 Degree Mode VSI | 10 questions in 30 minutes | Mock test for Electrical Engineering (EE) preparation | Free important questions MCQ to study Power Electronics for Electrical Engineering (EE) Exam | Download free PDF with solutions
Test: Three Phase 180 Degree Mode VSI - Question 1
Save

In a 3 – ϕ inverter circuit shown, the load is balanced and gating scheme is 180° conduction mode. All the switching devices are ideal

If the dc bus voltage Vd = 300V, the power consumed by 3 – ϕ load is

Detailed Solution for Test: Three Phase 180 Degree Mode VSI - Question 1



Test: Three Phase 180 Degree Mode VSI - Question 2
Save

A three phase bridge inverter is fed from a 500 V dc source. The inverter is operated in 180° conduction mode and it is supplying a purely resistive, star – connected load. The RMS value of the output (line) voltage is

Detailed Solution for Test: Three Phase 180 Degree Mode VSI - Question 2

Concept:

Calculation:

1 Crore+ students have signed up on EduRev. Have you? Download the App
*Answer can only contain numeric values
Test: Three Phase 180 Degree Mode VSI - Question 3
Save

A 3-ϕ 180° mode bridge inverter has star connected load of R = 4 Ω and L = 25 mH. The inverter is feed from 220 V dc and its output frequency is 50 Hz. Find the fundamental component of line voltage.


Detailed Solution for Test: Three Phase 180 Degree Mode VSI - Question 3

Concept:

The Fourier analysis of phase voltage

Where K = 0, 1, 2…

∴ Fundamental component of phase voltage

Fundamentals component of line voltage

Calculation:

Test: Three Phase 180 Degree Mode VSI - Question 4
Save

A 3 - ϕ voltage source inverter is operated in 180° conduction mode. Which one of the following statements is true?
Detailed Solution for Test: Three Phase 180 Degree Mode VSI - Question 4

Line voltage is given by

A three phase voltage source inverter is operated in 180° mode. In that case third harmonics are absent in line voltage due to the factor 

Where k = 0, 1 ,2,....

For n = 3, Vp ≠ 0

∴ Vp is not free from third harmonics

Hence pole voltage will have 3rd harmonic component but line voltage will be free from 3rd harmonic.

Test: Three Phase 180 Degree Mode VSI - Question 5
Save

A three-phase voltage source inverter with ideal devices operating in 180° conduction mode is feeding a balanced star-connected resistive load. The DC voltage input is Vdc. The peak of the fundamental component of the phase voltage is
Detailed Solution for Test: Three Phase 180 Degree Mode VSI - Question 5

Concept:

Calculation:

The waveform of output voltage in a three-phase voltage source inverter operating in 180° conduction mode is shown below.

Fourier series expansion of line to neutral voltage is

Test: Three Phase 180 Degree Mode VSI - Question 6
Save

A 3-phase inverter delivers power to a resistive load from a DC source 'Vs'. For a star-connected load of 'R' Ω per phase, the load power for 180 degree mode of operation is _______.
Detailed Solution for Test: Three Phase 180 Degree Mode VSI - Question 6

Concept:

In 180° conduction mode:

Calculation:

For a star-connected load of 'R' Ω per phase, the load power for the 180-degree mode of operation is

Test: Three Phase 180 Degree Mode VSI - Question 7
Save

In a 3-phase inverter with 180° conduction mode the number of switches that is on at any instant of time is
Detailed Solution for Test: Three Phase 180 Degree Mode VSI - Question 7

180-degree conduction with star connected resistive load:

The configuration of the three-phase inverter with star connected resistive load as shown in the figure. The following convention is followed.

  • A current leaving a node point a, b or c and entering the neutral point n is assumed to be positive.
  • All the three resistances are equal, Ra = Rb = Rc = R

In this mode of operation, each switch conducts for 180°. Hence at any instant of time three switches remain on. There are six possible modes of operation in a cycle and each mode is of 60° duration and the explanation of each mode is as follows:

Test: Three Phase 180 Degree Mode VSI - Question 8
Save

For the waveform (as shown below), which of the options is true?
Detailed Solution for Test: Three Phase 180 Degree Mode VSI - Question 8

For 180° conduction mode:

  • Line voltage remains Vdc for 120°
  • Phase voltage remains  for each 60°

For 120° conduction mode:

  • Phase voltage remains  for 120°
  • Line voltage remains  for 60° 


Hence, the given waveform represents the load phase voltage when the inverter is operating in 180° conduction mode.

*Answer can only contain numeric values
Test: Three Phase 180 Degree Mode VSI - Question 9
Save

A three-phase Voltage Source Inverter (VSI) as shown in the figure is feeding a delta connected resistive load of 30Ω/phase. If it is fed from a 600V battery, with 180° conduction of solid-state devices, the power consumed by the load, in kW, is __________.

Detailed Solution for Test: Three Phase 180 Degree Mode VSI - Question 9

Concept:

Calculation:

A three phase voltage source inverter supplying equivalent delta load.

Equivalent star load resistance is,

Test: Three Phase 180 Degree Mode VSI - Question 10
Save

A d.c. source is switched in steps to synthesize the three-phase output. The basic three-phase bridge inverter can be controlled. The angle through which each switch conducts, and any instant the number of switches conducting simultaneously are, respectively
Detailed Solution for Test: Three Phase 180 Degree Mode VSI - Question 10

In a three-phase bridge inverter,

For 120° mode conduction, no of switches conducting simultaneously = 2

For 180° mode conduction, no of switches conducting simultaneously = 3

5 videos|50 docs|46 tests
Join Course
Information about Test: Three Phase 180 Degree Mode VSI Page
In this test you can find the Exam questions for Test: Three Phase 180 Degree Mode VSI solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Three Phase 180 Degree Mode VSI, EduRev gives you an ample number of Online tests for practice

Top Courses for Electrical Engineering (EE)

5 videos|50 docs|46 tests
Join Course
Download as PDF

Top Courses for Electrical Engineering (EE)

Important Questions for Three Phase 180 Degree Mode VSI

Find all the important questions for Three Phase 180 Degree Mode VSI at EduRev.Get fully prepared for Three Phase 180 Degree Mode VSI with EduRev's comprehensive question bank and test resources. Our platform offers a diverse range of question papers covering various topics within the Three Phase 180 Degree Mode VSI syllabus. Whether you need to review specific subjects or assess your overall readiness, EduRev has you covered. The questions are designed to challenge you and help you gain confidence in tackling the actual exam. Maximize your chances of success by utilizing EduRev's extensive collection of Three Phase 180 Degree Mode VSI resources.

Three Phase 180 Degree Mode VSI MCQs with Answers

Prepare for the Three Phase 180 Degree Mode VSI within the Electrical Engineering (EE) exam with comprehensive MCQs and answers at EduRev. Our platform offers a wide range of practice papers, question papers, and mock tests to familiarize you with the exam pattern and syllabus. Access the best books, study materials, and notes curated by toppers to enhance your preparation. Stay updated with the exam date and receive expert preparation tips and paper analysis. Visit EduRev's official website today and access a wealth of videos and coaching resources to excel in your exam.

Online Tests for Three Phase 180 Degree Mode VSI Power Electronics

Practice with a wide array of question papers that follow the exam pattern and syllabus. Our platform offers a user-friendly interface, allowing you to track your progress and identify areas for improvement. Access detailed solutions and explanations for each test to enhance your understanding of concepts. With EduRev's Online Tests, you can build confidence, boost your performance, and ace Three Phase 180 Degree Mode VSI with ease. Join thousands of successful students who have benefited from our trusted online resources.
© EduRev
Education Revolution
Follow Us
Signup on EduRev and stay on top of your study goals
10M+ students crushing their study goals daily