Electrical Machines In a star - delta starting of an IM resistance is inserted in the rotor. reduced voltage is applied to the stator. line voltage is 57.7 % of stator voltage. applied voltage per stator phase is 57.7 % of a line volt resistance is inserted in the rotor. reduced voltage is applied to the stator. line voltage is 57.7 % of stator voltage. applied voltage per stator phase is 57.7 % of a line volt ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer which of the following losses are zero? Iron loss Rotational loss Copper loss All of these Iron loss Rotational loss Copper loss All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor drawing an armature current of Ia is operating under saturated magnetic conditions. The torque developed in the motor is proportional to Ia2 Ia 1/Ia I/Ia2 Ia2 Ia 1/Ia I/Ia2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two generators G1 and G2 are to be operated in parallel to deliver a total current of 60 A. Generator one has a terminal voltage of 280 V on no load and 240 V when supplying 40 A current. Similarly the second generator has a voltage of 300 V when on no load and 240 V when supplying of 50 A of current. The output voltage of each generator will be 256.4 V. 238.2 V. 240 V. 271.7 V. 256.4 V. 238.2 V. 240 V. 271.7 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A delta/star transformer is connected in parallel to a star/delta transformer. The turn ratio former is x times latter, the x is 3 1/√3 1/3 √3 3 1/√3 1/3 √3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two dc machines A and B, using the same conductor material, have armature circuit resistances of 0.4 Ω and 1.2 Ω respectively. Of the two machines, A is bigger than B for the same voltage rating B is bigger than A for the same current rating A is bigger than B for the same current rating both are of the same size for the same current rating A is bigger than B for the same voltage rating B is bigger than A for the same current rating A is bigger than B for the same current rating both are of the same size for the same current rating ANSWER DOWNLOAD EXAMIANS APP
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