Electrical Machines The speed of rotating magnetic field of 8 pole 50 Hz induction motor is 3000 rpm 750 rpm 1500 rpm 1000 rpm 3000 rpm 750 rpm 1500 rpm 1000 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the frequency of input voltage of a transformer is increased keeping the magnitude of voltage unchanged, then Ph will increase but Pe will decrease both hysteresis loss(Ph) and eddy current loss(Pe) will increase Ph will decrease but Pe will remain same Pe will increase but Ph will decrease Ph will increase but Pe will decrease both hysteresis loss(Ph) and eddy current loss(Pe) will increase Ph will decrease but Pe will remain same Pe will increase but Ph will decrease ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the reactance voltage when current is changed from -2A to 2A in 4 sec and self inductance is 1H? 4 V 0 V 1 V 2 V 4 V 0 V 1 V 2 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The emf induced in a conductor rotating in a bipolar field is both of above. None of these DC. AC. both of above. None of these DC. AC. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dummy coils are used for All of these reducing armature reaction. mechanical balancing. increasing efficiency. All of these reducing armature reaction. mechanical balancing. increasing efficiency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor electromotive force of the IM is observed to make 100 complete alterations per minute, calculated slip 3 %. None of these 0 .001 %. 3.33 %. 3 %. None of these 0 .001 %. 3.33 %. ANSWER DOWNLOAD EXAMIANS APP
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