Electrical Machines For a DC machine having P no of pole pairs Z no of conductors having length L of resistivity ρ and cross section S are arranged. what is the armature resistance for lap-winding ? PZL/4SP² PZL/4S PZL/4Sa² PZL/ 4Sa PZL/4SP² PZL/4S PZL/4Sa² PZL/ 4Sa ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the air gap of IM is increased, ____________ will increase. speed. air gap flux. magnetizing current. power factor. speed. air gap flux. magnetizing current. power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC series generator, the terminal voltage with increase in load will remain nearly constant decrease increase to rated voltage and then may decrease increase gradually and then stay at rated voltage remain nearly constant decrease increase to rated voltage and then may decrease increase gradually and then stay at rated voltage ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two DC series motors are connected in series and are driving the same mechanical load. If the motors are now connected in parallel the speed will become 4 times. half. double. one fourth. 4 times. half. double. one fourth. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The air gap between the yoke and armature is dc machine is kept very small to avoid over heating. All of these to avoid locking of the armature. to achieve a stronger magnetic field. to avoid over heating. All of these to avoid locking of the armature. to achieve a stronger magnetic field. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The sequence of induction motor is RYB, then the direction of induction motor can be changed by which of the following sequence? BYR RBY BRY All of these BYR RBY BRY All of these ANSWER DOWNLOAD EXAMIANS APP
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