Electrical Machines Slot wedges in a dc machine is made up of cast iron. fibre. silicon steel. mild steel. cast iron. fibre. silicon steel. mild steel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum power developed in a cylindrical synchronous machine depends on both 1and 2 excitation synchronous reactance load angle both 1and 2 excitation synchronous reactance load angle ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum efficiency will occur, when copper loss is_______to iron loss? any of the above less than greater than equal to any of the above less than greater than equal to ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 200 V DC machine supplies 20 A at 200 V as a generator. The armature resistance is 0.2 Ω. If the machine is now operated as a motor at same terminal voltage and current but with the flux increased by 10%, the ratio of motor speed to generator speed is 0.95 0.96 1.06 0.87 0.95 0.96 1.06 0.87 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole 50 Hz induction motor is running at 1470 rpm. What is the slip value? 0.2 0.02 0.04 0.4 0.2 0.02 0.04 0.4 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Under which of the following conditions is a dc motor provided with compensating winding used ? 1. Wide range of speed control above normal 2. Wide range of steady load variation with no speed control 3.Wide range of rapid variation in load Select the correct answer using the codes given below : Codes : 1 and 3 1, 2 and 3 1 and 2 2 and 3 1 and 3 1, 2 and 3 1 and 2 2 and 3 ANSWER DOWNLOAD EXAMIANS APP
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