Electrical Machines Maximum power will be developed when back emf is equal to supply voltage. All of these half of the supply voltage. double the supply voltage. equal to supply voltage. All of these half of the supply voltage. double the supply voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 100/10, 50 VA double winding transformer is converted to 100/110 V auto transformer. The rating of auto transformer is 550 VA 500 VA 110 VA 100 VA 550 VA 500 VA 110 VA 100 VA ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines At what power factor, the voltage regulation of a transformer can be zero ? Leading power factor. Unity power factor. Zero power factor. Lagging power factor. Leading power factor. Unity power factor. Zero power factor. Lagging power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Transformers operating in parallel will share the load depending upon their efficiency. percentage impedance. rating. leakage reactance. efficiency. percentage impedance. rating. leakage reactance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following methods are used to control the speed of DC motors is armature circuit resistance control All of these field current control supply voltage control armature circuit resistance control All of these field current control supply voltage control ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is/are the necessary conditions for parallel operation of alternators? Speed of alternators should be same Both 1and 2 Frequency should be same Terminal voltage is same Speed of alternators should be same Both 1and 2 Frequency should be same Terminal voltage is same ANSWER DOWNLOAD EXAMIANS APP
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