A simple two-phase generator comprises of two conductive loops that are separated by 90°, rotating in a magnetic field FALSE TRUE Correct answer: 2. TRUE
In Y-Y system, the source phase currents each have a magnitude of 9 A. The magnitude of each load current for a balanced load condition is 0.125 0.375 Correct answer: 2. 0.375
Polyphase circuits are characterized by two or more sinusoidal voltages, each having a different phase angle FALSE TRUE Correct answer: 2. TRUE
A balanced load is one for which all the impedances are equal FALSE TRUE Correct answer: 2. TRUE
The role of a conservator in transformer is to Protect the transformer from damage when oil expends due to heating Provide fresh air for cooling the transformer Supply cooling oil to transformer in time of need None of these Correct answer: 1. Protect the transformer from damage when oil expends due to heating
The term ‘squirrel-cage’ applies to a type of three-phase ac motor FALSE TRUE Correct answer: 2. TRUE
Electrical Engineering MCQs on Synchronous Motor Part 14 If field circuit of an unloaded salient pole synchronous motor gets suddenly open-circuited then If field circuit of an unloaded salient pole synchronous motor gets suddenly open-circuited then Correct answer: 4. The motor stops The motor that is non self-starting The motor that is non self-starting Correct … Read more
Electrical Engineering MCQs on Synchronous Motor Part 13 In order to limit the operating temperature an electrical machine should have proper In order to limit the operating temperature an electrical machine should have proper Correct answer: 1. Current rating Generally, synchronous motors are of Generally, synchronous motors are of Correct answer: 3. Salient pole type … Read more
Electrical Engineering MCQs on Electrical Traction MCQs Part 2 The specific energy consumption of a train depends on The specific energy consumption of a train depends on Correct answer: 4. All of these The rate of acceleration on suburban or urban service is in the range The rate of acceleration on suburban or urban service … Read more
Electrical Engineering MCQs on Electrical Traction MCQs Part 1 For diesel locomotives the range of horsepower is For diesel locomotives the range of horsepower is Correct answer: 1. 1500 to 2500 Long distance railways utilize Long distance railways utilize Correct answer: 2. 25 kV single phase AC Tractive effort is required to Tractive effort is … Read more