Compensating windings are employed in generators Primarily to reduce the eddy currents by providing local short-circuits To neutralize the cross-magnetizing effect of the armature reaction To provide path for the circulation of cooling air None of these Correct answer: 2. To neutralize the cross-magnetizing effect of the armature reaction Visit Electrical Engineering MCQ here for … Read more
The power transformer is a constant Current device Main flux device Power device Voltage device Correct answer: 2. Main flux device Visit Electrical Engineering MCQ here for more
An ideal single-phase transformer has a turns ratio of 1:2 and drawing a current of 10 A from 200 V AC Supply is incorrect Its rating is 2 kVA Its secondary current is 20 A Its secondary current is 5 A Its secondary voltage is 400 V Correct answer: 2. Its secondary current is 20 … Read more
Open-circuit test on a transformer is conducted primarily to determine Copper loss Core loss Insulation resistance Total loss Correct answer: 2. Core loss Visit Electrical Engineering MCQ here for more
The chemical used in breather is Asbestos fiber Silica gel Silica sand Sodium chloride Correct answer: 2. Silica gel Visit Electrical Engineering MCQ here for more
When the equivalent circuit diagram of double squirrel cage induction motor is constructed the two cages can be considered In parallel In parallel with stator In series In series-parallel Correct answer: 1. In parallel Visit Electrical Engineering MCQ here for more
The commutator segments are connected to the armature conductors through Brazing Copper lugs Insulation pads Resistance wires Correct answer: 2. Copper lugs Visit Electrical Engineering MCQ here for more
The winding in a transformer that has more number of turns High voltage winding Low voltage winding Primary winding Secondary winding Correct answer: 1. High voltage winding Visit Electrical Engineering MCQ here for more
A 220 V generator is running at full speed without any excitation. The open circuit voltage will be 220 V About 2 V About 50 V Zero Correct answer: 2. About 2 V Visit Electrical Engineering MCQ here for more
In case of power or distribution transformer about 10 percent end turns are heavily insulated, this is done so as To absorb the line surge voltage and save the winding of transformer from damage To reflect the line surge and save the winding of a transformer from damage To withstand the high voltage drop due … Read more