Electrical Machines Which of the following represents the operating region of slip in a 1-phase induction motor? 0 < S < 2 -1 < S < 1 0 < S < 1 -2 < S < 2 0 < S < 2 -1 < S < 1 0 < S < 1 -2 < S < 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A commutator in DC machines can 1. provide half-wave rectification 2. Provide full-wave rectification 3. convert ac to dc 4. Convert dc to ac 5. provide controlled full-wave rectification From these, the correct answer is 2, 3 ,5 1, 2, 3 2, 3, 4 2, 3, 4, 5 2, 3 ,5 1, 2, 3 2, 3, 4 2, 3, 4, 5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For larger units high torque it is preferred to use DC shunt motor. Universal motor. Partial motor. Slip induction motor. DC shunt motor. Universal motor. Partial motor. Slip induction motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The following statements relate to compensating winding (CW) and interpole winding (IW) of a dc machine : 1. CW neutralizes the armature reaction under a pole pitch 2. IW is connected in series with armature circuit 3. IW produces mmf in the commutating zone only 4. CWmmf is directed along the brush axis 5. Mmf produced by IW is equal to armature mmf From these, the correct statements are 1, 3, 4, 5 1, 2, 3, 4 and 5 2, 3, 4, 5 2, 3, 4 1, 3, 4, 5 1, 2, 3, 4 and 5 2, 3, 4, 5 2, 3, 4 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which machine is used for battery charging? DC shunt generator. Compounded DC generator. DC series generator. None of these. DC shunt generator. Compounded DC generator. DC series generator. None of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The function of field regulator in a DC compound motor is to limit the armature current. none of above. control field current. vary the armature resistance. limit the armature current. none of above. control field current. vary the armature resistance. ANSWER DOWNLOAD EXAMIANS APP
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