Electrical Machines A 3- phase synchronous motor can operate over a wide range of power factors i.e. from lagging to leading power factor. This is achieved by changing the field excitation. changing the load. varying the speed. varying the applied voltage. changing the field excitation. changing the load. varying the speed. varying the applied voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine yoke offers produce working flux mechanical protection to the machine both A and B flux path completion produce working flux mechanical protection to the machine both A and B flux path completion ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Thin laminations are used in a machine in order to reduce Eddy current losses Both 1 and 2 Copper losses Hysteresis losses Eddy current losses Both 1 and 2 Copper losses Hysteresis losses ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor especially the cage rotors slots are nearly parallel to shaft axis. This is called crawling. cogging. skewing. slip. crawling. cogging. skewing. slip. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines On which of the following factor/factors the speed of a DC motor depends upon? Armature current. All of these. Field flux. Applied voltage. Armature current. All of these. Field flux. Applied voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which type of motors are preferred in lifts? None of these DC series motors. DC shunt motors. DC compound motors. None of these DC series motors. DC shunt motors. DC compound motors. ANSWER DOWNLOAD EXAMIANS APP
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