Electrical Machines Transformer oil is used as both A and B. a coolant. an insulator. inert medium. both A and B. a coolant. an insulator. inert medium. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is power factor of a 3 - φ induction motor at no load? Low. Equal to 1. High. Same as full load. Low. Equal to 1. High. Same as full load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC cumulatively compounded motor delivers rated load torque at rated speed. If the series field is short-circuited, then the armature current and speed will both increase both decrease increase and decrease respectively decrease and increase respectively both increase both decrease increase and decrease respectively decrease and increase respectively ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In IM the rotor lamination can be ________________ than stator laminations. thinner. thicker. sipper. rotor can not have any laminations. thinner. thicker. sipper. rotor can not have any laminations. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When applied rated voltage per phase is reduce to one half, the starting torque of three phase squirrel cage induction motor becomes 4 time the initial value twice the initial value 1/2 of the initial value 1/4 of the intial value 4 time the initial value twice the initial value 1/2 of the initial value 1/4 of the intial value ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of stator rotating magnetic field (RMF) with respect to rotor is Zero S.Ns Nr Ns Zero S.Ns Nr Ns ANSWER DOWNLOAD EXAMIANS APP
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