Electrical Engineering MCQs for competitive tests, job tests, university exams are provided on various Electrical and Electronics topics.
Electrical Engineering MCQs on Power System Protection Breaking capacity of SF6 circuit breaker is not affected by: Correct answer: 4. All of these Explanation: SF6 belongs to the class of High Voltage Circuit breakers. At voltages 46 kV and above (classified as “high voltage” in the electrical power industry), the challenge of extinguishing the electric … Read more
Electrical Engineering MCQs on Power System Protection Under normal operating conditions the contacts of the circuit breaker remain Correct answer: 2. Closed Read about different types of circuit breakers below: See More MCQs in Electrical Engineering:
Electrical Engineering MCQ on AC Motors AC motor while operating on variable frequency supply requires variable voltage in order to Correct answer: 1. Avoid effect of saturation Explanation: Whenever frequency is changed, the induction motor characteristics require the applied voltage to be proportionally adjusted. As an example, if a motor is designed to operate at … Read more
From given list, methods of electrical braking are: Correct answer: 4. All of these See below: What is Regenerative braking Also see Complete list of Electrical Engineering MCQs
Electrical Engineering MCQs on Transformer MCQs Part 28 A transformer works on A transformer works on: Correct answer: 1. AC only Explanation: The transformer is an electrical device that changes AC electric power at one voltage level to ac electric power at another voltage level by the action of magnetic field. A transformer comprises of … Read more
Basic Electrical Engineering MCQs Part 30 With rise in temperature, the specific resistance of metallic conductor With rise in temperature, the specific resistance of metallic conductor _________ Correct answer: 1. Increases Explanation: The specific resistance of a metallic conductor increases with an increase in temperature. This is due to the fact that the thermal velocity … Read more
One of the most important and distinctive feature of a nuclear power station is that it can generate huge amount of electrical energy from a small amount of nuclear fuel. Nuclear fule is very powerful as compared to other conventional types of power stations. It has been estimated that 1 kg of uranium-235 corresponds to … Read more
Electrical Engineering Multiple Choice Question on Power System Protection Which of following belongs to instantaneous relay class: Correct answer: 2. Permanent magnet moving coil type Explanation: The electrical relay is an electrical device that detects the electrical fault and initiates the operation of the circuit breaker to isolate the defective components from the power system. Also see: 20 Different Types … Read more
Electrical Engineering MCQ on Power Generation Stringing chart is useful for: Correct answer: 3. Finding sag in tower Explanation: The term stringing means hanging or suspending. A stringing chart has plot of temperature-sag and temperature-tension. Such chart is helpful while stringing overhead lines. Temperature-sag and temperature tension charts are plotted for the given conductor and … Read more
Electrical Engineering MCQ on Power Distribution Guy wire is attached to transmission line pole inorder to: Correct answer: 3. Strengthen the pole Also see: Electrical Engineering MCQs on Power Transmission See below: TIGHTENING a “guy wire” on a utility pole