Electrical Machines For an ideal transformer the winding should have minimum resistance on primary side and maximum resistance on secondary side no ohmic resistance on either side equal resistance on primary and secondary side maximum resistance on primary side and least resistance on secondary side minimum resistance on primary side and maximum resistance on secondary side no ohmic resistance on either side equal resistance on primary and secondary side maximum resistance on primary side and least resistance on secondary side ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 8-pole, DC generator has a simplex wave-wound armature containing 32 coils of 6 turns each. Its flux per pole is 0.06 Wb. The machine is running at 250 rpm. The induced armature voltage is 192 V 768 V 384 V 96 V 192 V 768 V 384 V 96 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following represents the pitch factor? Cos (α/2) Cos α Cos α² sin (α/2) Cos (α/2) Cos α Cos α² sin (α/2) ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous motor, damper windings are provided on stator frame. pole faces. rotor shaft. None of these stator frame. pole faces. rotor shaft. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dummy coils are used for All of these increasing efficiency. mechanical balancing. reducing armature reaction. All of these increasing efficiency. mechanical balancing. reducing armature reaction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two transformers with identical rating, are designed with flux densities of 1.2 and 1.4 Wb / m2 respectively. The weight of first transformer per kVA is less than that of second transformer. equal to that of second transformer. none of these. more than that of second transformer. less than that of second transformer. equal to that of second transformer. none of these. more than that of second transformer. ANSWER DOWNLOAD EXAMIANS APP
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