Advanced Power Electronics (3170906) MCQs

MCQs of Multipulse Converters

Showing 1 to 10 out of 28 Questions
1 2 3
1.
Can we make Y or Δ from the zigzag connection? 

 

(a)

Yes
(b)

No
(c)

Maybe
(d)

Y possible but Δ not possible
Answer:

Option (a)

2.

No. of coils per phase required in the zigzag type of winding connections is

(a)

1
(b)

2
(c)

3
(d)

4
Answer:

Option (b)

3.

Which may be the lowest order harmonics present in the source current of 18 pulse converter?

(a)

11
(b)

13
(c)

17
(d)

19
Answer:

Option (c)

4.

Which of the following converter provides the lower order harmonic cancellation?

(a)

Inverter
(b)

Multilevel Inverter
(c)

Rectifier
(d)

Multipulse Converter
Answer:

Option (d)

5.

Multipulse converter converts 

(a)

DC-DC
(b)

DC-AC
(c)

AC-AC
(d)

AC-DC
Answer:

Option (d)

6.

The converter falls under the category of multipulse if it produces the number of pules 

(a)

less than 6
(b)

equals to 6
(c)

greater than 6
(d)

equals to 9
Answer:

Option (c)

7.

6 phase supply can be produced using

(a)

relay
(b)

transformer
(c)

phase shifting transformer
(d)

series connection of rectifier
Answer:

Option (c)

8.

One 6-pulse circuit contains ______________ SCR/diodes

(a)

6
(b)

12
(c)

3
(d)

9
Answer:

Option (a)

9.

Is it always necessary to use phase shifting transformer for 6-pulse converter?

(a)

Yes
(b)

No
Answer:

Option (b)

10.

Harmonics present in the line current of 6-pulse converter are

(a)

3rd
(b)

9th
(c)

7th
(d)

11th
Answer:

Option (c)

Showing 1 to 10 out of 28 Questions
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