Electrical Machines The power factor of an induction motor operating at no load will have a value around 0.2 lag unity 0.2 lead 0.9 lag 0.2 lag unity 0.2 lead 0.9 lag ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A synchorous generator connected to an infinite bus is over excited. Considering only the reactive power from the point view of the system the machine acts as an inductor. A resistor. None of these. A capacitor. an inductor. A resistor. None of these. A capacitor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Compensating windings is placed in which part of a D.C motor? On yoke in the inter pole gap. On yoke in the pole faces. None of these On armature. On yoke in the inter pole gap. On yoke in the pole faces. None of these On armature. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Lamination of transformer core is made of wrought iron. silicon steel. cast iron. cast steel. wrought iron. silicon steel. cast iron. cast steel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature resistance of a permanent magnet dc motor is 0.8 Ohm. At no load, the motor draws 1.5 A from a supply voltage of 25 V and runs at 1500 rpm. The efficiency of the motor while it is operating on load at 1500 rpm drawing a current of 3.5 A from the same source will be 48.0%. 59.2%. 88.8%. 57.1%. 48.0%. 59.2%. 88.8%. 57.1%. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 2 pole lap winding dc machine , the resistance of one conductor is 2Ω and total number of conductors is 100. Find the total resistance 200Ω 10Ω 50Ω 100Ω 200Ω 10Ω 50Ω 100Ω ANSWER DOWNLOAD EXAMIANS APP
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