Electrical Engineering Mcqs

Basic Electrical Engineering MCQs Part 17 An electron moves in a circle of radius 10 cm with constant speed of 6*10^6 m/s. Electric current at a point on circle is: An electron moves in a circle of radius 10 cm with constant speed of 6*10^6 m/s. Electric current at a point on circle is: 1.10 … Read more

Basic Electrical Engineering MCQs Part 16 Electric current in a discharge tube containing gas is due which of following Electric current in a discharge tube containing gas is due which of following: Positive ions only Electrons only Electrons and positive ions None of these Correct answer: 3. Electrons and positive ions At 0 K Germanium … Read more

Basic Electrical Engineering MCQs Part 15 Two electric bulbs having resistances in ratio 1:2 are connected in parallel to a constant voltage source. The power dissipated by the bulbs are in ratio Two electric bulbs having resistances in ratio 1:2 are connected in parallel to a constant voltage source. The power dissipated by the bulbs … Read more

Basic Electrical Engineering MCQs Part 14 If potential difference across conductor of material having resistivity ρ remains constant, then heat produced is proportional to: If potential difference across conductor of material having resistivity ρ remains constant, then heat produced is proportional to: 1/ρ Ρ ρ² 1/√ρ Correct answer: 1. 1/ρ A constant voltage is applied … Read more

Basic Electrical Engineering MCQs Part 13 EMF in a circuit EMF in a circuit: Maintains the potential difference Decreases resistance of circuit Increases resistance of circuit None of these Correct answer: 1. Maintains the potential difference A copper wire of resistance Ro is stretched till its length is increased n times of its original length. … Read more

Basic Electrical Engineering MCQs Part 12 One kilowatt hour is equal to One kilowatt hour is equal to 36 * 10^2 J 36 * 10^3 J 36 * 10^4 J 36 * 10^5 J Correct answer: 4. 36 * 10^5 J Two bulbs 500 W and 300 W are manufactured to operate on 220 V … Read more

Induction Motor MCQs Part 14 Which of following is correct regarding the rotor speed in a 3 -phase induction motor? It is Which of following is correct regarding the rotor speed in a 3 -phase induction motor? It is Smaller than synchronous speed Greater than synchronous speed Equal to synchronous speed None of these Correct … Read more

Transformer MCQs Part 19 Which of following is an advantage of 3-phase transformer over 3 single phase bank of transformers Which of following is an advantage of 3-phase transformer over 3 single phase bank of transformers: Less weight Less cost Less space is required All of these Correct answer: 4. All of these Leakage flux … Read more

Switchgear and Protection MCQs Part 8 The recovery voltage in circuit breaker is maximum for a power factor of The recovery voltage in circuit breaker is maximum for a power factor of: Zero 0.5 0.707 Unity Correct answer: 3. 0.707 A circuit breaker is rated as 2000 A, 1200 MVA, 33 kV, 3 second, 3 … Read more

Switchgear and Protection MCQs Part 7 In bulk oil circuit breaker, the oil actually used for arc extinction is about In bulk oil circuit breaker, the oil actually used for arc extinction is about: 10% of total 40% of total 80% of total 90% of total Correct answer: 1. 10% of total The relay operating … Read more