Advanced Power Electronics (3170906) MCQs

MCQs of Multi-level Converters

Showing 31 to 40 out of 47 Questions
1 2 3 4 5
31.

How many levels can be produced in the output voltage waveform of single unit of H-Bridge? 

(a)

2
(b)

3
(c)

4
(d)

5
Answer:

Option (b)

32.

How many D.C. sources are required in construction of 5 Level CHB?

(a)

1
(b)

2
(c)

3
(d)

4
Answer:

Option (b)

33.

What can not be used as input to the CHB? 

(a)

Oscillator
(b)

Rectifier
(c)

Solar Cell
(d)

Batteries
Answer:

Option (a)

34.

In cascaded H-Bridege inverter the units of H-Bridge are connected in _______

(a)

Series manner
(b)

Parallel Manner
(c)

Combination of Series and Parallel
(d)

They are kept Separate
Answer:

Option (a)

35.

In 3-Phase 5-Level CHB inverter the total number of required switches is ________

(a)

12
(b)

18
(c)

24
(d)

30
Answer:

Option (c)

36.

Select the correct expression to find out the number of H-Bridge unit is required for m-level inverter.

(a)

6 x (m-1)
(b)

(m -1)
(c)

(m - 1) / 2
(d)

m /2
Answer:

Option (c)

37.

If we use notation for the one dc supply magnitude as Edc then what should be the magnitude to D.C. supplies for 7–LevelCHBWith Unequal DCVoltage Source.

(a)

Edc, 3 Edc
(b)

-Edc, Edc
(c)

Edc, 2 Edc
(d)

-Edc, 4 Edc
Answer:

Option (c)

38.

No of IGBTs required to construct 9–LevelCHBWith Unequal DCVoltage Source.

(a)

4
(b)

8
(c)

12
(d)

16
Answer:

Option (b)

39.

Which of the PWM schemes are for multilevel Inverter?

(a)

Phase Shifted Multicarrier Modulation
(b)

Triangular Shifted Multicarrier Modulation
(c)

Frequncy Shifted Multicarrier Modulation
(d)

Square Shifted Multicarrier Modulation
Answer:

Option (a)

40.

What should be angle between the carriers in Phase Shifted Multi carrier PWM scheme while implementing for 9 level inverter?

(a)

30 Degree
(b)

45 Degree
(c)

60 Degree
(d)

90 Degree
Answer:

Option (b)

Showing 31 to 40 out of 47 Questions
1 2 3 4 5