Electrical Machines No load test of 3-phase induction motor gives which of the following? variable loss constant loss None of these both A and B variable loss constant loss None of these both A and B ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following methods are used to control the speed of DC motors is field current control supply voltage control All of these armature circuit resistance control field current control supply voltage control All of these armature circuit resistance control ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC shunt motor if load is increased, the speed increased slightly. increase proportional. remains constant. reduce slightly. increased slightly. increase proportional. remains constant. reduce slightly. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Voltage across the open circuited field termninals of a synchorous machine under slip test is DC of slip frequency. DC. A modulated supply frequency AC voltage with slip frequency envelop. AC of supply frequency. DC of slip frequency. DC. A modulated supply frequency AC voltage with slip frequency envelop. AC of supply frequency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Poles of DC machine are often laminated to dissipate more heat. reduce armature reaction. reduce iron weight. reduce pulsation loss. dissipate more heat. reduce armature reaction. reduce iron weight. reduce pulsation loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The three point starter is used for Series motor. Shunt motor as well as compound motors. Shunt motor. Shunt, compound and series motor. Series motor. Shunt motor as well as compound motors. Shunt motor. Shunt, compound and series motor. ANSWER DOWNLOAD EXAMIANS APP
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