Electrical Engineering Mcqs

Switchgear and Protection MCQs Part 13 The circuit breaker is best defined as a The circuit breaker is best defined as a: Correct answer: 3. Circuit interruption device Oil in low oil circuit breaker serves to Oil in low oil circuit breaker serves to: Correct answer: 1. Provide arc extinction Back-up protection is usually used … Read more

Synchronous Motor MCQs Part 3 The rotor of synchronous motor is: Correct answer: 1. Salient pole type Synchronous motor runs at speed that is Synchronous motor runs at speed that is: Correct answer: 3. Same as synchronous speed The slip rings in synchronous motor carry The slip rings in synchronous motor carry: Correct answer: 1. … Read more

A Wheatstone bridge is in a balanced condition, if galvanometer is short-circuited, the value of currents in various resistors will: Correct answer: 3. Remain same as before Explanation: In case of a balanced Wheatstone bridge there is no current passing through the branch containing galvanometer. In such case if the branch containing the galvanometer is … Read more

Conductance can be Correct answer: 2. Positive only Explanation: The mathematical formula for conductance (G): G = 1/R Since R is positive only, conductance can also be positive only. Also see: list of Electrical Engineering Formulas here

Application of bundled conductors causes critical voltage for corona formation to Correct answer: 1. Increase You might like: Top 5 Factors Affecting Corona in Transmission Lines Also see: Electrical Power Transmission MCQs See complete list of Electrical Engineering MCQs here

Kirchhoff’s voltage law deals with: Correct answer: 3. Conversation of energy Also see: Top 20 MCQs on Basic Electrical Laws and Theorems You might like to see: Voltmeter loading effect on Electrical circuits More MCQs in Electrical Engineering

What happens when cells are arranged in the parallel configuration: Correct answer: 3. Current capacity increases Cells are connected in paralle configuration inorder to increase their current capacity. See: 5 Differences between Series and Parallel Circuits See different types of battery connections Complete list of Electrical Engineering MCQs

Electrical Power Transmission MCQs Part 18 A string of insulators in a 33 kV overhead transmission has 3 units. Voltage across string is A string of insulators in a 33 kV overhead transmission has 3 units. Voltage across string is: Correct answer:  3. 33/√3 kV Wind pressure is directly proportional to Wind pressure is directly … Read more

Power System Protection MCQs Part 21 The normal current in power line is 120 A. If short circuit fault occurs on the line, the one can expect the short-circuit current to be The normal current in power line is 120 A. If short circuit fault occurs on the line, the one can expect the short-circuit … Read more