Electrical Engineering MCQs for competitive tests, job tests, university exams are provided on various Electrical and Electronics topics.
Electrical Engineering XYZ MCQs Addition of 0.3%-4.5% silicon to iron: Correct answer: 2. Increases the electrical resistivity of iron Explanation: Addition of 0.3 % to 4.5 % silicon to iron increases electrical resistivity of iron.
Electrical Engineering XYZ MCQs Which of the following motor has more stability: Correct answer: 1. Salient pole motor Explanation: Salient pole motor has more stability.
Electrical Engineering XYZ MCQs With an increase in load, in synchronous motor, the torque or load angle δ: Correct answer: 2. Increases Explanation: In a synchronous motor, the rotor (or the revolving part) rotates at the same speed as the stator magnetic field. The load angle (δ) is the angle between the rotor position and … Read more
Electrical Engineering XYZ MCQs Synchronous reactance of an alternator represents: Correct answer: 3. Reactance operating at synchronous speed Explanation: The armature reactance represents the opposition to the flow of alternating current in the armature winding, while leakage reactance accounts for the leakage flux and the associated reactance. Together, these two components make up the synchronous … Read more
Electrical Engineering XYZ MCQs The shunt resistance component equivalent circuit obtained by no load test of an induction motor representative of: Correct answer: 1. Core loss only Explanation: During the no-load test of an induction motor, the primary objective is to determine the core loss, which includes both hysteresis loss and eddy current loss in … Read more
Electrical Engineering XYZ MCQs Slot wedges in a DC machine is made up of: Correct answer: 4. Silicon steel Explanation: Silicon steel, also known as electrical steel, is a common material used in the construction of laminated cores for electrical machines, including DC machines. It possesses desirable magnetic properties and helps in reducing eddy current … Read more
Electrical Engineering XYZ MCQs Field weakening method is also termed as: Correct answer: 4. Constant power control Explanation: Field weakening is a method used in the control of electric motors, particularly in the context of AC (alternating current) motors. This technique is applied to extend the operating range of the motor beyond its nominal conditions, … Read more
Electrical Engineering XYZ MCQs In DC machines internal characteristics are plotted between: Correct answer: 1. Eg vs Ia
Electrical Engineering XYZ MCQs The size of inter poles is small as compared to main poles, that is because of: Correct answer: 2. In order to not get saturated Explanation: In an electrical machine, such as an electric generator or motor, the poles play a crucial role in generating magnetic fields. The main poles are … Read more
Electrical Engineering XYZ MCQs The effect of XYZ on main field flux is armature reaction, here XYZ implies: Correct answer: 2. Armature flux Explanation: In the context of an electric machine, such as a DC motor or generator, armature reaction refers to the magnetic effect produced by the flow of armature current in the coil … Read more