Electrical Machines When maximum flux density is constant, the eddy current losses are proportional to V2 f f2 V V2 f f2 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC machine, the angle between the stator and rotor fields is dependent upon the load. 180o. 90o. 0o. dependent upon the load. 180o. 90o. 0o. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dynamic braking is very effective for shunt motors. series motors. separately excited motors. differential compound motors. shunt motors. series motors. separately excited motors. differential compound motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ward-Leonard control is basically a ___________ control method. Field control. Armature voltage control. Field diverter control. Armature resistance control. Field control. Armature voltage control. Field diverter control. Armature resistance control. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When pure inductive load is connected to the alternator, what is the effect of armature reaction? None of these Cross magnetization Demagnetization Magnetization None of these Cross magnetization Demagnetization Magnetization ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An inverted V curve of synchronous motor shows variation of power factor and supply voltage during hunting. supply voltage and excitation current at constant load. supply voltage and field current at constant excitation. power factor and DC excitation at constant load. power factor and supply voltage during hunting. supply voltage and excitation current at constant load. supply voltage and field current at constant excitation. power factor and DC excitation at constant load. ANSWER DOWNLOAD EXAMIANS APP
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