Electrical Engineering MCQs for competitive tests, job tests, university exams are provided on various Electrical and Electronics topics.
The number of stator windings in a four-speed squirrel cage induction motor are: Correct answer: 2. Two Explanation: Four-speed squirrel cage induction motors are equipped with two separate stator windings. Each winding is responsible for providing two speeds.
The slip and rotor current in a 3-phase induction motor are Correct answer: 1. Directly proportional to each other
Torque characteristics of 3 phase induction motor are similar to: Correct answer: 1. DC Shunt motor
Electrical Engineering XYZ MCQ on Which type of magnetic field is produced by stator of 3 phase induction motors. Stator of 3-phase induction motor produces: Correct answer: 1. Rotating magnetic field Explanation: The stator of a 3-phase induction motor is responsible for generating a rotating magnetic field. This rotating magnetic field is crucial for the … Read more
With an increase in temperature, the resistance decreases in case of Correct answer: 3. Carbon
Current drops by 3%. Now the percentage by which the incandescence of lamp decreases is: Correct answer: 3. 6% Explanation: P = I2R ΔP = 2I(ΔI)R OR ΔP/P = {2I(ΔI)R}/{I2R} = 2ΔI/I = 2 × 3% = 6%
Electrons in last orbit of atom are known as Correct answer: 2. Valence electrons Explanation: Valence electrons are the electrons in the outermost energy level (or orbit) of an atom. These electrons are involved in the formation of chemical bonds and are crucial in determining the chemical properties of an element. The number of valence … Read more
Which of following is an example of non-ohmic resistance: Correct answer: 3. Carbon resistance Explanation: Carbon resistors are examples of non-ohmic resistors. The resistance in a carbon resistor is not constant and can change with the applied voltage or current. The resistance of a carbon resistor may vary due to factors like temperature and aging, … Read more
Electrical Engineering XYZ MCQ on The best material for making conducting wires is The best material for making conducting wires is: Correct answer: 2. Copper Explanation: Copper is one of the most widely used materials for conducting wires due to its excellent electrical conductivity, malleability, and corrosion resistance. Copper wires are commonly used in various … Read more
