Electrical Machines If starting current of a 3 - Φ induction motor is 5 times the rated current, while rated slip is 4 %, then ratio of starting torque to full load torque is 0.4. 1. 0.6. 0.8. 0.4. 1. 0.6. 0.8. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The ventilating ducts in most of DC machine are radial as well as longitudinal. longitudinal. radial. none of these. radial as well as longitudinal. longitudinal. radial. none of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generators, the cause of rapid brush wear may be severe sparking. imperfect contact. rough commutator surface. any of above. severe sparking. imperfect contact. rough commutator surface. any of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines It is an advisable to use auto transformer if the transformation ratio is 0.5. Greater than 1. near to 1. 0.25. 0.5. Greater than 1. near to 1. 0.25. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines 3rd harmonics are eliminated in induction motor by using delta connection. V connection. zig - zag connection. star connection. delta connection. V connection. zig - zag connection. star connection. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The change in speed of a DC generator due to increased load is corrected by increasing terminal voltage. increasing armature cooling. increasing armature resistance. increasing input power of the prime mover. increasing terminal voltage. increasing armature cooling. increasing armature resistance. increasing input power of the prime mover. ANSWER DOWNLOAD EXAMIANS APP
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