Electrical Engineering MCQs for competitive tests, job tests, university exams are provided on various Electrical and Electronics topics.
Transformer MCQs Part 1. The value of flux involved in the EMF equation of a transformer is The value of flux involved in the EMF equation of a transformer is Average value Maximum value Rms value Instantaneous value Correct answer: 2. Maximum value No-load current in a transformer No-load current in a transformer Lags behind … Read more
Power System MCQs Part 4 The basic unit of energy is The basic unit of energy is: joule watt joule/s watt/s Correct answer: 1. joule The thermal efficiency and electrical efficiency of a power plant are 33% and 88% respectively, the overall efficiency of power plant is The thermal efficiency and electrical efficiency of a … Read more
Zener Diode MCQ Questions with Answers A Zener diode is designed for operation in the A Zener diode is designed for operation in the: Forward bias region Reverse bias region on right side of knee voltage Reverse-breakdown region None of these Correct answer: 3. Reverse-breakdown region Zener diode can be best defined as Zener diode … Read more
Power System MCQ Part 3 When all three phases are short circuited, electric current through system is When all three phases are short-circuited, the electric current through the system is: Zero Low but not zero Very high None of these Correct answer: 3. Very high The operator a rotates vector in anticlockwise direction by degrees … Read more
Power System MCQ Part 2. Skin effect increases Skin effect increases: Resistance of power line Inductance of power line Capacitance of power line All of these Correct answer: 1. Resistance of power line Definition of short transmission lines The lines below _____ are considered as short transmission lines: 20 km 80 km 240 km 600 … Read more
Power System MCQ Questions Variable load on power system results in Variable load on power system results in: Increase in production cost Requirement of additional equipment. Both of these None of these Correct answer: 3. Both of these A curve showing the variation of load on the electric power station with respect to time is … Read more
Energy Unit Conversion MCQs 1 kWh equals 1 kWh equals: 36 × 105 watt-sec 1000 watt-sec 3.6 × 105 watt-sec 36 × 105 watt-sec Correct answer: 1. 36 × 105 watt-sec 1 calorie equals 1 calorie equals: 2·25 Joules 4·18 Joules 6·22 Joules 10.5 Joules Correct answer: 2. 4.18 Joules 1896 Joules equals 1896 Joules … Read more
Power System Protection MCQs Part 13 In case of the absence of a fourth conductor serving as return path, the zero-sequence current will In case of the absence of a fourth conductor serving as return path, the zero-sequence current will: Not flow Flow Flow but less than 1.732 times Flow but 4 times more the … Read more
Top 10 Questions on Lighting Systems. Luminous intensity is measured in Luminous intensity is measured in: Kelvin Candelas Illumine Degrees Correct answer 2. Candelas One lumen equals One lumen equals one candela-steradian two candela-steradian three candela-steradian four candela-steradian Correct answer: 1. one candela-steradian The quantity of light emitted by a source is The quantity of … Read more
Power System Protection MCQ Part 12 Which of following statement is correct regarding power system components Which of following statement is correct regarding power system components: All components are bilateral Only rotating machines are bilateral Both of these None of these Correct answer: 4. None of these Opening one or two phases in a three-phase … Read more