Advanced Power Electronics (3170906) MCQs

MCQs of HVDC Transmission

Showing 1 to 10 out of 25 Questions
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1.

Out of the following which multipulse converter is mostly used in HVDC?

(a)

6-pulse converter
(b)

18-pulse converter
(c)

12-pulse converter
(d)

7-level multilevel inverter
Answer:

Option (c)

2.

Which type of HVDC scheme uses only one conductor?

(a)

Homoolar
(b)

Bipolar
(c)

Monopolar
(d)

Back to back link
Answer:

Option (c)

3.

Which type of HVDC link can provide the more than half the rated power transfer capacity under the fault in any one conductor condition?

(a)

Homopolar
(b)

Bipolar
(c)

Monopolar
(d)

Unipolar
Answer:

Option (a)

4.

Which of the following HVDC scheme is much better as far as the cost of cable is the concern?

(a)

monopolar
(b)

bipolar
(c)

homoploar
(d)

back to back
Answer:

Option (a)

5.

What would be the operating polarity of the conductor  in homoploar HVDC scheme

(a)

all conductors are operated with positive
(b)

all conductors are operated with negative
(c)

One with positive and rest conductors are operated with negative
(d)

One with negative and rest conductors are operated with positive
Answer:

Option (b)

6.

In HVDC system what would be sequence of the parameter conversion from sending end side to receiving end side?

(a)

dc-dc-ac-dc
(b)

ac-dc-dc-ac
(c)

ac-ac-dc-ac
(d)

dc-ac-dc-ac
Answer:

Option (b)

7.

Q/P ratio _____________ in HVDC &  __________ in EHVAC as the distance of the transmission increases. 

(a)

increase, decrease
(b)

decrease, increase
(c)

remains unchanged, remain unchanged
(d)

remains inchanged, increases
Answer:

Option (d)

8.

AC Power system gained much popularity because of 

(a)

transformers invetion
(b)

poly phase circuits invention
(c)

induction motor invention
(d)

all of these
Answer:

Option (d)

9.

Thyristor valve offers

(a)

High Maintenance
(b)

High Power Loss
(c)

Free from arcs 
(d)

Limited V & I ratings
Answer:

Option (c)

10.

Which of the following factors of the cable restrict the power transfer capacity of the HVDC link?

(a)

Inductive reactance offered by the line
(b)

Capacitive Reactance offered by the line
(c)

Resistance offered by the line
(d)

None of these
Answer:

Option (c)

Showing 1 to 10 out of 25 Questions
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