Electrical Engineering MCQs for competitive tests, job tests, university exams are provided on various Electrical and Electronics topics.
Electrical Engineering XYZ MCQs Stepper motor is used in which of following applications: Correct answer: 4. All of these Explanation: From all given applications stepper motors are used in all of these. Therefore, the correct answer is “All of these” as stepper motors are versatile and can be used in various applications that require precise … Read more
Electrical Engineering XYZ MCQ Damper winding is used to: Correct answer: 1. Suppress the hunting Explanation: Damper winding is a winding placed on the rotor of a synchronous machine, such as a synchronous generator or motor. Its primary purpose is to suppress or dampen oscillations known as “hunting” that can occur in the system. Hunting … Read more
Electrical Engineering XYZ MCQs Reactive power generated or delivered significantly depends on: Correct answer: 1. Excitation Explanation: Reactive power is associated with the generation and delivery of electric power in alternating current (AC) systems. It is a measure of the power flow that does not perform any real work but is necessary for the establishment … Read more
Electrical Engineering XYZ MCQ Maximum power developed in a cylindrical synchronous machine depends on: Correct answer: 3. Both 1 and 2 Explanation: The maximum power developed in a cylindrical synchronous machine depends on both the synchronous reactance (X_s) and excitation.
Electrical Engineering XYZ MCQ The working principle of transformer depends on: Correct answer: 4. Faraday’s law of electromagnetic induction Explanation: The working principle of a transformer is based on Faraday’s law of electromagnetic induction. Faraday’s law states that a changing magnetic field induces an electromotive force (EMF) in a coil or conductor. In the case … Read more
Damper windings in a synchronous motor are provided on: Correct answer: 1. Pole faces Explanation: One of the methods to start a synchronous motor is to employ amortisseur or damper windings. Amortisseur windings are special bars that are laid into notches that are carved in the face of a synchronous motor’s rotor and then shorted … Read more
Electrical Engineering XYZ MCQ Which of the following DC motors has maximum relieving property: Correct answer: 2. Series DC Motor Explanation: DC series motors are known for their characteristic of developing large starting torque. This is because the field winding and the armature winding are connected in series, which allows the entire armature current to … Read more
Electrical Engineering XYZ MCQ Maximum power will be developed when back emf is: Correct answer: 1. Half of the supply voltage Explanation: The maximum power will be developed when back emf is half of the supply voltage. Mathematically: Eb = Vt/2
Which of the following is an advantage of carbon brush over the copper brush: Correct answer: 4. All of these Explanation: All of the given options are advantages of carbon brushes over copper brushes. Here’s a breakdown:
Lap winding is preferred for which type of machines: Correct answer: 4. High current and low voltage Explanation: Lap winding is preferred for machines where a high current is required at low voltage, such as in DC machines. In particular, lap winding is commonly used in DC generators and DC motors. Lap winding is characterized … Read more