Electrical Engineering Mcqs

Electrical Engineering MCQs for competitive tests, job tests, university exams are provided on various Electrical and Electronics topics.

  1. Basic Electrical Laws and Theorems
  2. Basic Voltage and Current MCQs
  3. High Voltage Engineering MCQs
  4. Induction Motor MCQs
  5. Power Electronics
  6. Power Distribution MCQs
  7. Power Generation MCQs
  8. Power System Protection MCQs
  9. Power Transmission and Distribution MCQs
  10. Semiconductors theory MCQ Questions
  11. Synchronous Generator MCQs
  12. Synchronous motor MCQs
  13. Transformer MCQs

Which of the following grounding is not practically preferred for protection of equipment

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Which of the following grounding is not practically preferred for protection of equipment: Correct answer: 3. Isolated grounding Explanation: Isolated grounding involves grounding equipment separately from the power system ground. This method is not preferred for the protection of equipment because it can lead to floating potentials and increased risk of equipment damage during faults. … Read more

In case of symmetrical network, the neutral current is

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In case of symmetrical network, the neutral current is: Correct answer: 3. Zero Explanation: In a symmetrical network, the term “symmetrical” implies that the network elements, such as impedances, loads, and sources, are symmetrically arranged. In such a system, the electrical parameters are balanced and equal on all phases. For a three-phase system, the neutral … Read more

Breaking current is expressed in

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Electrical Engineering MCQ Breaking current is expressed in: Correct answer: 3. RMS Explanation: Breaking current is RMS value. It is the current RMS value that a circuit breaker is capable of breaking at given recovery voltage and under specified conditions (e.g., power factor, rate of rise of restriking voltage).

The resistance and reactance of a line are found to be equal and regulation is zero, then load will have

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Electrical Engineering MCQ The resistance and reactance of a line are found to be equal and regulation is zero, then load will have: Correct answer: 3. 0.707 leading power factor Explanation: The analysis you provided is accurate. If the resistance and reactance of a line are equal, and the voltage regulation is zero, it implies … Read more

Fault calculations using computer are usually done by

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Electrical Engineering MCQ Fault calculations using computer are usually done by: Correct answer: 1. Z bus matrix Explanation: Fault calculations in power systems involve determining the behavior of the system under short-circuit or fault conditions. The Z bus method is commonly used for fault calculations. In the Z bus method, the power system network is … Read more

Normally, the Z bus matrix is a

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Electrical Engineering MCQ Normally, the Z bus matrix is a: Correct answer: 4. Very dense Explanation: The Z bus matrix can be computed by matrix inversion of the Y bus matrix. Since the Ybus matrix is usually sparse, the explicit Z bus matrix would be dense and very memory intensive to handle directly.