Electrical Machines In alternator, the rotary part is none of these. core. armature. magnetic field poles. none of these. core. armature. magnetic field poles. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements : 1. interpole windings are connected in series with armature windings 2. polarity of interpoles must be the same as that of the main poles in advance 3. distortion of the main field under the pole shoes is not affected by the use of interpoles From above, the correct answer is 1 and 3 2 and 3 1 and 2 1 alone 1 and 3 2 and 3 1 and 2 1 alone ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 230 V dc series generator is driven at its rated speed. The no-load voltage across its armature terminals would be somewhat more than 230 V 230 V somewhat less than 230 V 6 V somewhat more than 230 V 230 V somewhat less than 230 V 6 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Counter emf of a DC motor regulates its armature voltage. exceeds supply voltage aids applied voltage. helps in energy conversion. regulates its armature voltage. exceeds supply voltage aids applied voltage. helps in energy conversion. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slight curvature at the lower end of the OCC of a self excited DC generator is due to high field resistance. high speed. residual flux. magnetic inertia. high field resistance. high speed. residual flux. magnetic inertia. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Semi closed slots or totally closed slots are used in induction motors, essentially to increase pull out torque reduce magnetising current and improve power factor improve starting torque decrease starting torque increase pull out torque reduce magnetising current and improve power factor improve starting torque decrease starting torque ANSWER DOWNLOAD EXAMIANS APP
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