Electrical Machines Armature reaction effect is more in which of the following methods? same in both methods None of these armature resistance control field weakening method same in both methods None of these armature resistance control field weakening method ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If s is the slip and f is the supply frequency of an induction motor, the frequency of rotor current is given by sf / 2. f / s. s2. sf. sf / 2. f / s. s2. sf. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole dc motor with armature winding resistance of 0.6 ohm receives a supply of 230 Volt. If the back emf produced during running condition is equal to 210 volt. Calculate the current flowing through the armature at this point. 29 Amp. 43 Amp. 33.33 Amp. 44.47 Amp. 29 Amp. 43 Amp. 33.33 Amp. 44.47 Amp. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines which of the following losses are negligible in blocked rotor test? copper loss mechanical loss iron loss both A and B copper loss mechanical loss iron loss both A and B ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is/are not a self starting motor? None of these 1-phase induction motor 3-phase induction motor both 1 and 2 None of these 1-phase induction motor 3-phase induction motor both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the applied voltage of a DC motor is 230 V, then back emf, for maximum power developed is 200 V. 460 V. 115 V. 230 V. 200 V. 460 V. 115 V. 230 V. ANSWER DOWNLOAD EXAMIANS APP
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