# Test: HVDC of Power Systems

## 10 Questions MCQ Test GATE Electrical Engineering (EE) 2023 Mock Test Series | Test: HVDC of Power Systems

Description
Attempt Test: HVDC of Power Systems | 10 questions in 30 minutes | Mock test for Electrical Engineering (EE) preparation | Free important questions MCQ to study GATE Electrical Engineering (EE) 2023 Mock Test Series for Electrical Engineering (EE) Exam | Download free PDF with solutions
QUESTION: 1

### In case of HVDC system, there is

Solution:
• In HVDC transmission current distributes uniformly over the cross-section of the conductor. Hence no loss due to skin effect is encountered.
• Corona Loss directly proportional to frequency. Therefore in the DC line, corona loss will be lesser compared to the AC line.
QUESTION: 2

### A dc line carries

Solution:

Due to requirement of less number of conductors, a dc line carries more power than a ac line, (losses of the line reduces in HVDC).

QUESTION: 3

### HVDC transmission is preferred to EHV AC because

Solution:

HVDC transmission is more reliable than EHV AC because it uses ground or sea return and therefore, in case of fault on a line it can still be used to supply power with the help of healthy lines.

QUESTION: 4

Back-to-back HVDC is used to

Solution:
QUESTION: 5

HVDC transmission needs

Solution:
QUESTION: 6

In HVDC system a converter acts as a rectifier when the firing angle α has a value

Solution:
QUESTION: 7

The capital cost on a HVDC converter is

Solution:
QUESTION: 8

In a dc transmision

Solution:

As operating frequency, f = 0 therefore, there is no effect of XL and XC.

QUESTION: 9

As compared to ac transmission dc transmission is free from

Solution:
QUESTION: 10

Which of the following is/are correctly matched?

Solution:
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