Electrical Engineering MCQs for competitive tests, job tests, university exams are provided on various Electrical and Electronics topics.
Electrical Engineering XYZ MCQs The magnetic circuit of a dc shunt generator with negligible armature resistance and brush contact voltage drop remains unsaturated when it delivers full-load current at rated terminal voltage. The brushes are kept in the interpolar axis and speed is maintained constant. When the load is switched off, the terminal voltage would: … Read more
Electrical Engineering XYZ MCQs In a loaded DC generator, If the brushes are given a shift from the interpolar axis in the direction of rotation, then the commutation will: Correct answer: 2. Improve with fall of terminal voltage Vt Explanation: In case of a loaded DC generator, commutation refers to the process of transferring current … Read more
Electrical Engineering XYZ MCQs The volt-ampere equation for a long-shunt compound motor is given by: Correct answer: 4. Vt = Ea + Ia(ra + rs)
Electrical Engineering XYZ MCQs Semi closed slots or totally closed slots are used in induction motors, essentially to: Correct answer: 1. Reduce magnetizing current and improve power factor Explanation: Semi-closed or totally closed slots in induction motors help in reducing the magnetizing current. This is because closed slots provide better magnetic circuit closure, which reduces … Read more
Electrical Engineering XYZ MCQs Which of the following motors has negative speed regulation: Correct answer: 2. Differential compound motors Explanation: Differential compound motors have negative speed regulation.
Electrical Engineering XYZ MCQs In signal flow graph output node is node having only: Correct answer: 2. Incoming branches Explanation: Incoming branches represent the signals or variables that contribute to the output signal, while outgoing branches represent the dependencies of the output signal on other signals within the system. In signal flow graph output node … Read more
Electrical Engineering XYZ MCQs Which of the following is the characteristic of negative feedback control system: Correct answer: 4. All of the above Explanation: Therefore, all of the options listed are characteristics of negative feedback control systems.
Electrical Engineering XYZ MCQs Which of the following is the analogous quantity for mass element in force-voltage analogy: Correct answer: 1. Inductance Explanation: In electrical circuits, inductance represents the opposition to the change in current flow, just as mass represents the opposition to the change in velocity in a mechanical system. Inductance is the correct … Read more
Electrical Engineering XYZ MCQs What is the majority carriers of P type material: Correct answer: 2. Holes Explanation: In semiconductor physics, P-type materials are doped with acceptor impurities, which create an excess of “holes” in the crystal lattice. These holes effectively act as positive charge carriers. When a hole moves, it appears as if a … Read more
Electrical Engineering XYZ MCQs Which of the following is the pentavalent material: Correct answer: 1. Arsenic Explanation: The pentavalent materials are those that can form compounds in which they exhibit a +5 oxidation state. The oxidation state refers to the charge that an atom would have if all bonds were purely ionic. Arsenic is a … Read more