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GATE 2025 Power Systems Evaluation Quiz 9

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Question 1

Consider the following statements regarding smoothing reactor in HVDC transmission.
A) It increases the harmonic voltages and currents in the DC line.
B) Commutation failures in inverters are prevented by smoothing reactors.
C) The stresses on converter valve and surge diverter are reduced.
Which of the following option is correct?

Question 2

The HVDC system uses which of the following converters at sending and receiving end?

Question 3

A 550 kV underground cable is having a core and the relative permittivity of dielectric medium is 6 and offered capacitance of cable is 5μf/km. The dielectric power loss in this HVDC cable is ____________W.

Consider length of cable is 8 km.

Question 4

Which of the following HVDC link has more than one conductor and the polarity of all the conductors is similar?

Question 5

Consider the following statements:
The suitable configuration of HVDC converter is decided on the requirements
1) of high pulse number
2) of converter transformer utilization factor should be near to unity.
Which of these statements is/are correct?
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Mar 5ESE & GATE EE