Electrical Machines The current drawn by the a 230 V DC motor of armature resistance 0.5 Ω and back emf 200 V is 60 660 600 40 60 660 600 40 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If residual magnetism of a shunt generator is destroyed accidentally it may be restored by connecting its shunt field in reverse. to an AC source. to a DC source. to earth. in reverse. to an AC source. to a DC source. to earth. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two identical loss less series motors connected in series across a dc supply voltage, runs at speed of N1 and N2, then ratio of their output power is none. N12 : N22. N1 : N2. 1 : 1. none. N12 : N22. N1 : N2. 1 : 1. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC Motor is driving a constant load torque having armature resistance of 0.25 Ω and armature current of 60 A having connected to a voltage of 230 V. Now a resistance of 1 ohm is added into the armature circuit. The ratio of their speed will be 0.62. 1.24. 0.25. 0.72. 0.62. 1.24. 0.25. 0.72. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Type of single phase motor having highest power factor at full load is capacitor start. capacitor run. split phase. shaded pole type. capacitor start. capacitor run. split phase. shaded pole type. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The core flux in transformer depends mainly on supply voltage, frequency and load supply voltage and frequency supply voltage and load supply voltage supply voltage, frequency and load supply voltage and frequency supply voltage and load supply voltage ANSWER DOWNLOAD EXAMIANS APP
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