Electrical Machines The induction motor shaft is made of mild steel. aluminium. cast iron. stainless steel. mild steel. aluminium. cast iron. stainless steel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3 - Φ IM with line frequency f1 and winding factor kw1 and kw2 for stator and rotor respectively the ratio of per phase stator winding emf E1 to per phase rotor winding emf E2 at standstill is given by E1 / E2 = 1. E1 / E2 = N1kw1 / N2kw2. E1 / E2 = N1 / N2. E1 / E2 = f1kw1 / f2kw2. E1 / E2 = 1. E1 / E2 = N1kw1 / N2kw2. E1 / E2 = N1 / N2. E1 / E2 = f1kw1 / f2kw2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The use of double squirrel cage winding on the rotor provides low noise. a large starting torque. reduced starting torque. higher efficiency. low noise. a large starting torque. reduced starting torque. higher efficiency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To achieve spark less commutation brushes of DC generator are rocked ahead so as to bring them in magnetic neutral axis. just behind the magnetic neutral axis. just ahead of magnetic neutral axis. None of these in magnetic neutral axis. just behind the magnetic neutral axis. just ahead of magnetic neutral axis. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator, the armature reaction results in magnetization of inter poles. demagnetization of centers of poles. demagnetization of leading & magnetization of trailing pole tip. magnetization of leading and demagnetization of trailing pole tip. magnetization of inter poles. demagnetization of centers of poles. demagnetization of leading & magnetization of trailing pole tip. magnetization of leading and demagnetization of trailing pole tip. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a DC machine having P no of pole pairs Z no of conductors having length L of resistivity ρ and cross section S are arranged. what is the armature resistance for lap-winding ? PZL/4S PZL/ 4Sa PZL/4Sa² PZL/4SP² PZL/4S PZL/ 4Sa PZL/4Sa² PZL/4SP² ANSWER DOWNLOAD EXAMIANS APP
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