Electrical Machines The 3 - Φ induction motor with rotor circuit open will not run. run normally. get over heated. make noise. not run. run normally. get over heated. make noise. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Tap changer is generally provided in power transformer. current transformer. voltage transformer. earthing transformer. power transformer. current transformer. voltage transformer. earthing transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In travelling cranes for swing action which motor is preferred? Reluctance motor. AC slip ring IM. DC series motor. Capacitor type induction motors. Reluctance motor. AC slip ring IM. DC series motor. Capacitor type induction motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The sparking at the the brushes, in a DC machines is due to armature reaction. presence of commutator. high resistance of carbon brushes. reactance voltage. armature reaction. presence of commutator. high resistance of carbon brushes. reactance voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous machine, if the field flux axis is ahead of the armature field axis in the direction of rotation, the machine operating is asynchronous motor. synchronous generator. asynchronous generator. synchronous motor. asynchronous motor. synchronous generator. asynchronous generator. synchronous motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A synchronous generator is feeding a zero power factor (lagging) load at rated current. The armature reaction is ineffective. magnetizing. cross – magnetizing. demagnetizing. ineffective. magnetizing. cross – magnetizing. demagnetizing. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS