Electrical Machines which of the following losses are negligible in blocked rotor test? iron loss copper loss mechanical loss both A and B iron loss copper loss mechanical loss both A and B ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which of the following, voltage regulation may be zero or negative lagging power factor All of these leading power factor unity power factor lagging power factor All of these leading power factor unity power factor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine shape of main field flux distribution is? flat tapped or trapezoidal triangular peaky in nature saddle shape flat tapped or trapezoidal triangular peaky in nature saddle shape ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 V dc machine has an armature resistance of 1Ω.If the full-load current is 20 A, the differenc in the induced voltages when the machine is running as a motor and as a generator is zero 50 V 20 V 40 V zero 50 V 20 V 40 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What will be the eddy current loss if the supply frequency of a transformer becomes double? Remains same. Four times. Doubled. Eight times. Remains same. Four times. Doubled. Eight times. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor used in hair dryers? Cage induction motor. Shaded pole IM. Synchronous motors. Split phase IM. Cage induction motor. Shaded pole IM. Synchronous motors. Split phase IM. ANSWER DOWNLOAD EXAMIANS APP
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