Electrical Engineering MCQs for competitive tests, job tests, university exams are provided on various Electrical and Electronics topics.
Electrical Engineering XYZ MCQs Equalizer rings are used in case of which winding: Correct answer: 2. Lap winding Explanation: Equalizer rings are used in the case of Lap winding. Lap winding is a type of armature winding in which the winding is distributed over a number of coils. In lap winding, the end of one … Read more
Electrical Engineering XYZ MCQs Which of the following windings are necessary in case of all DC machines: Correct answer: 3. Closed winding Explanation: Closed winding is the winding that is necessary in case of all DC machines.
Electrical Engineering XYZ MCQs In DC generators brushes are used for: Correct answer: 4. Collecting current without any sparking Explanation: Brushes in DC generators serve the purpose of maintaining electrical contact between the rotating armature (coil) and the stationary parts of the generator, such as the external circuit. They are typically made of carbon or … Read more
Electrical Engineering XYZ Thin laminations are used in electrical machines in order to reduce: Correct answer: 4. Eddy current losses Explanation: Eddy currents are circulating currents induced in the core material by the changing magnetic field. These currents create additional resistive heating in the core. Using thin laminations in the core reduces the eddy current … Read more
Electrical Engineering MCQs XYZ If field current is decreased in shunt dc motor, the speed of the motor: Correct answer: 1. Increases Explanation: In a shunt DC motor, the field winding is connected in parallel (shunt) with the armature winding. The speed of a DC motor is given by the formula: N ∝ {(V−Ia⋅Ra)/Φ} where: … Read more
Electrical Engineering XYZ MCQs The EMF induced in a conductor rotating in a bipolar field is: Correct answer: 2. AC Explanation: When a conductor rotates in a bipolar field, it experiences a changing magnetic flux. According to Faraday’s law of electromagnetic induction, the electromotive force (EMF) induced in a conductor is proportional to the rate … Read more
Electrical Engineering XYZ MCQs When applying the Fleming’s right hand rule to find the direction of induced emf, the thumb points towards’: Correct answer: 4. Direction of motion of the conductor
Electrical Engineering XYZ MCQs When an electric train is moving down a hill, the DC series motor will operate as: Correct answer: 4. DC series generator
Electrical Engineering XYZ MCQs Hysteresis loss is proportional to: Correct answer: 2. f Explanation: Hysteresis loss is proportional to frequency f.
Electrical Engineering XYZ MCQ The leakage reactance of a 3-phase alternator is determined by performing: Correct answer: 3. Open circuit and zero power factor tests Explanation: The leakage reactance of a 3-phase alternator can indeed be determined by performing both open circuit and zero power factor tests. These tests are used to assess different aspects … Read more