Electrical Engineering MCQs for competitive tests, job tests, university exams are provided on various Electrical and Electronics topics.
Filters in Electrical Engineering MCQ Questions The bandwidth of an ideal low-pass filter The bandwidth of an ideal low-pass filter: Is more than critical frequency Is equal to critical frequency Is less than critical frequency Correct answer: 2. Is equal to critical frequency Explanation: In an ideal low pass filter, the critical frequency sometimes also … Read more
Power System Protection MCQs Part 15 Bulk oil circuit breaker is generally suitable for voltage levels up to Bulk oil circuit breaker is generally suitable for voltage levels up to 3.3 kV 11 kV 13.5 kV 66 kV Correct answer: 4. 66 kV Explanation: Bulk oil circuit breakers employ large quantity of oil. Oil in … Read more
Power System Protection MCQs Part 14 Arc in circuit breakers can be extinguished using which of following method Arc in circuit breakers can be extinguished using which of following method: High resistance method Low resistance method Both of these None of these Correct answer: 3. Both of these Explanation: High resistance method: This method involves … Read more
Power System MCQs Part 9 For reducing tower footing resistance it is better to employ For reducing tower footing resistance it is better to employ Chemical and ground rods only Ground rod and counterpoise only Chemical and counterpoise only Chemical, ground rods and counterpoise Correct answer: 2. Ground rod and counterpoise only The size of … Read more
Electrical Power Generation MCQs Part 12 The major loss in steam power station occurs in The major loss in steam power station occurs in: Boiler Condenser Economizer Superheater Correct answer: 2. Condenser Thermal efficiency and electric efficiency of a generation plant are 31.3% and 86% respectively, the overall efficiency of power plant is Thermal efficiency … Read more
Power System MCQs Part 8 Effect of increasing gating angle in a thyristorised controlled reactor is to Effect of increasing gating angle in a thyristorised controlled reactor is to: Decrease power loss in thyristor controller Decrease power loss in the reactor Make current wave form less sinusoidal All of these Correct answer: 4. All of … Read more
Power System MCQs Part 7 Reactance relay is generally preferred for protection against Reactance relay is generally preferred for protection against Earth faults only Phase faults only None of these Correct answer: 1. Earth faults only The most economic load on an underground cable is The most economic load on an underground cable is Greater … Read more
Power System MCQs Part 6 The reactance relay is The reactance relay is Voltage restrained directional relay Voltage restrained over-current relay Directional restrained over-current relay None of the above Correct answer: 3. Directional restrained over-current relay I and T are the line current and the torque respectively when DOL starter is used, these quantities when … Read more
Power System MCQs Part 5 The symbol for complex power is The symbol for complex power is: P Q S R Correct answer: 3. S Generally motor devices account for what percentage of power system load Generally motor devices account for what percentage of power system load 10% 30% 70% 99% Correct answer: 3. 70% … Read more
Transformer MCQs Part 2 Iron losses are negligible during short-circuit test of transformer since Iron losses are negligible during short-circuit test of transformer since The current on secondary side is negligible Full-load current is not supplied to the transformer The voltage on secondary side does not vary The voltage applied on primary side is low … Read more