Electrical Machines Sparkless commutation can be achieved by employing high resistance carbon brushes. compensating winding. inter poles. any one or more of the above methods. high resistance carbon brushes. compensating winding. inter poles. any one or more of the above methods. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole DC generator runs at 750 rpm and generate an emf of 240 V. The armature is wave wound and has 792 conductors. If the total flux from each pole is 0.0145 Wb. What is the leakage co-efficient? 1.2. 1.4. 1.5. 1.8. 1.2. 1.4. 1.5. 1.8. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Transformer oil is used as an insulator. both A and B. a coolant. inert medium. an insulator. both A and B. a coolant. inert medium. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the effect of armature reaction ? None of the options. Armature flux distorts the main field flux. Both option B and C. Armature flux weakens the main field flux. None of the options. Armature flux distorts the main field flux. Both option B and C. Armature flux weakens the main field flux. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The wattage rating of a ceiling fan motor will be 50 - 150 W. 250 - 500 W. 10 - 20 W. 200 - 250 W. 50 - 150 W. 250 - 500 W. 10 - 20 W. 200 - 250 W. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two transformers operating in parallel will share the load depending on their per unit impedance ratings leakage reactance efficiency per unit impedance ratings leakage reactance efficiency ANSWER DOWNLOAD EXAMIANS APP
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