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GATE 2024 Power System Foundation Quiz 32
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Question 1
What happens to corona loss if frequency of the system is increased?
Question 2
The transmission line having a diameter of 4 cm and μr= 6 produces an internal inductance 0.12 μH/m. If it is replaced by an ASCR conductor which has a same diameter size but μr = 10, what will be the new internal inductance (μH/m)?
Question 3
Assuming Constant Transmission Efficiency, if voltage is increased 'n' times, the size of the conductor would be________?
Question 4
Consider the following statements regarding 3-phase AC line to DC line.
A) Power losses are reduced in comparison of AC.
B) Cost of transmission is increased due to line compensation.
C) The DC line can transmit twice the power of a three-phase double circuit system with modification of insulation and with same percentage loss.
Which of the following option is correct ?
A) Power losses are reduced in comparison of AC.
B) Cost of transmission is increased due to line compensation.
C) The DC line can transmit twice the power of a three-phase double circuit system with modification of insulation and with same percentage loss.
Which of the following option is correct ?
Question 5
A 1MVA, 2.2/6.6 kV transformer have an equivalent resistance of 9.68 Ω and leakage reactance of 14.52 Ω. The transformer is working at full load at a power factor of 0.6 lag. If the power factor is increased to 0.8 lag, then find the percentage of load that should be reduced so that the voltage regulation becomes half of the original operating condition is________.
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Apr 13ESE & GATE EE
