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Electrical Engineering (EE) Exam  >  Electrical Engineering (EE) Test  >  Power Electronics  >  Test: Advance Three Phase Converters - Electrical Engineering (EE) MCQ

Advance Three Phase Converters - Free MCQ Practice Test with solutions,


MCQ Practice Test & Solutions: Test: Advance Three Phase Converters (10 Questions)

You can prepare effectively for Electrical Engineering (EE) Power Electronics with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Advance Three Phase Converters". These 10 questions have been designed by the experts with the latest curriculum of Electrical Engineering (EE) 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 10 minutes
  • - Number of Questions: 10

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Test: Advance Three Phase Converters - Question 1
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In a 3 phase M-6 controlled converter for continuous conduction mode, each SCR conducts for __________ per cycle.

Detailed Solution: Question 1

Each SCR conducts for 60° or 2π/6 radians. 6 x 60 = 360°.

Test: Advance Three Phase Converters - Question 2
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 In a 3 phase, 12-pulse controlled converter for continuous conduction mode, each SCR conducts for __________ per cycle.

Detailed Solution: Question 2

Each SCR conducts for 30° or π/6 radians. 12 x 30 = 360°.

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Test: Advance Three Phase Converters - Question 3
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A 3-phase full converter delivers a ripple free load current of 10 A with a firing angle delay of 45°. The input voltage is 3-phase, 400 V, 50 Hz. The source current is given by the following relation.

Find the fundamental component of the source current amplitude.

Detailed Solution: Question 3

Put n = 1 (fundamental component) and the rest of the given values in the above given equation.

Test: Advance Three Phase Converters - Question 4
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A 3-phase full converter delivers a ripple free load current of 10 A with a firing angle delay of 45°. Find the DF.

Detailed Solution: Question 4

 DF = cosα = cos45 = 0.707
Note that ripple free current does not mean that DF = 0. It means the current is continues in magnitude and direction, current will always contain harmonics (distortions) whether it is rippled or ripple free.

Test: Advance Three Phase Converters - Question 5
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What is the relationship between DF, CDF and PF?

Detailed Solution: Question 5

PF (power factor) = (distortion factor) x (current distortion factor).

Test: Advance Three Phase Converters - Question 6
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The commutation period when both incoming and outgoing SCRs are conducting due to source inductance is called as the

Detailed Solution: Question 6

Due to source inductance, SCRs cannot start and stop conducting immediately, hence a time occurs when both incoming and outgoing SCRs are conducting together. This delay is called as commutation angle or overlap period (μ).

Test: Advance Three Phase Converters - Question 7
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A 3-phase full converter delivers a ripple free load current of 10 A with a firing angle delay of 45°. The input voltage is 3-phase, 400 V, 50 Hz. The source current is given by the following relation.


Find the value of 2nd harmonic source current amplitutue.

Detailed Solution: Question 7

2nd harmonics are absent in a 3-phase full converter, it has only odd number of harmonics i.e. 3rd, 5th etc.

Test: Advance Three Phase Converters - Question 8
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In a p-pulse converter, each SCR conducts for (per cycle)

Detailed Solution: Question 8

 In a p-pulse controlled converter, each device conducts for p radians. p-pulse converter would have p devices. Hence, 2π/p x p = 2π = 360°.

Test: Advance Three Phase Converters - Question 9
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Which of the below mentioned converter can operate in both 3-pulse and 6-pulse modes?

Detailed Solution: Question 9

Semi-converters can operate in 6-pulse modes gating the SCRs at appropriate intervals.

Test: Advance Three Phase Converters - Question 10
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 A M-6 controlled converter or 6-pulse half-wave controlled converter is obtained by using a transformer having

Detailed Solution: Question 10

M-6 requires a transformer having a delta connected primary and a double star connected secondary such that 6 SCRs are connected to it on the secondary side.

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About this Electrical Engineering (EE) Practice Test

This test contains 10 MCQs on Advance Three Phase Converters with detailed solutions for each question. It is part of the Power Electronics course on EduRev, designed to align with the current Electrical Engineering (EE) syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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If you found this Advance Three Phase Converters MCQ Test helpful, you can further enhance your Electrical Engineering (EE) preparation with in-depth courses on EduRev, for all the subjects and topics available in Power Electronics course. The course offers:
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