All Free Electrical Engineering MCQs with Answers
Every Electrical Engineering question in the bank, across all chapters, each with the correct answer and a written explanation. Free and unlimited, with no account needed.
3,143 questions · page 158 of 158
- A. alloy steel
- B. stainless steel
- C. mild steel
- D. high speed steel
- E. all of the above
Explanation: The steel core of a steel-cored conductor provides mechanical strength and is commonly made from galvanised mild steel.
Correct answer: mild steel- A. Impedance relay
- B. Mho's relay
- C. Reactance relay
- D. None of the above
Explanation: A mho relay is inherently directional and has a circular characteristic well suited to long, high-voltage transmission lines.
Correct answer: Mho's relay- A. Reversal of power can be controlled by firing angle
- B. Very good dynamic behavior
- C. They can link two AC system operating unsynchronized
- D. All of these
Explanation: HVDC links allow controlled power reversal, offer good dynamic control, and can connect AC networks that are not synchronized.
Correct answer: All of these