Electrical Engineering MCQs for competitive tests, job tests, university exams are provided on various Electrical and Electronics topics.
SCR will be turned off when the anode current is: Correct answer: 3. Both of these Also read: Basic construction and working of SCR Explanation: If anode current is in between holding current and latching current then SCR is off only if gate signal is absent. When anode current is below holding current then it … Read more
Electrical Engineering XYZ MCQ The typical value of SCR for modern alternator is around: Correct answer: 1. 0.5 Explanation: Short circuit ratio or SCR is defined as a measure of the stability of an electromechanical generator. Mathematically it is defined as the ratio of the field current required in order to generate rated voltage on … Read more
Basic Electrical Engineering MCQs Part 29 The material that has nearly zero temperature coefficient of resistance The material that has nearly zero temperature coefficient of resistance: Correct answer: 3. Manganin Explanation: Manganin has nearly zero temperature coefficient of resistance Related MCQ: Temperature coefficient of resistance of given conductor is defined as A field of force … Read more
Basic Electrical Engineering MCQs Part 28 In gases the flow of current is due to: In gases the flow of current is due to: Correct answer: 4. Electrons, positive ions and negative ions The temperature coefficient of resistance of certain wire is 0.00150 per °C. At 300 K, its resistance is 1 Ω. The resistance … Read more
Electrical Measurements MCQs The strain gauge is a The strain gauge is a Correct answer: 1. Passive device and converts mechanical displacement into a change of resistance The temperature coefficient of resistance for the material of shunt should be The temperature coefficient of resistance for the material of shunt should be: Correct answer: 3. Negligible … Read more
Power Generation MCQs Part 33 For the same power generation, the power plant that needs the least amount of fuel For same amount of power generation, the power plant that needs the least amount of fuel: Diesel Thermal Nuclear All generate equal power Correct answer: 3. Nuclear Explanation: 1 kg of coal can generate 8 … Read more
MCQs on Capacitance The SI unit of capacitance is: The SI unit of capacitance is: Henry Farad Hertz Tesla Correct answer: 2. Farad The capacitance of a capacitor is The capacitance of a capacitor is: Directly proportional to relative permittivity Inversely proportional to relative permittivity Independent of relative permittivity Equal to cube root of relative … Read more
Basic Electrical Engineering MCQs Part 27 Kirchhoff’s voltage law deals with Kirchhoff’s voltage law deals with: Conversation of angular momentum Conversation of charge Conversation of energy Conversation of momentum Correct answer: 3. Conversation of energy Also see: Permeability is reciprocal of The EMF of a cell depends on The EMF of a cell depends on: … Read more
Basic Electrical Engineering MCQs Part 26 A wire having high value of conductance is said to be A wire having high value of conductance is said to be: Moderate conductor Good conductor Insulator None of these Correct answer: 2. Good conductor The voltage required to create a flow of 0.3 C in 0.6 s through … Read more
Induction Motor MCQs Part 19 If air gap in induction motor is increased, its If air gap in induction motor is increased, its: Efficiency will improve Speed will reduce Power factor will decrease Speed will increase Correct answer: 3. Power factor will decrease A 3-phase induction motor is connected to a normal supply voltage A … Read more