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
Electrical Machines A belt-driven cumulatively-compound dc generator is delivering power to the dc mains. If the Belt snaps then the machine will run as a cumulative compounded motor in the same direction cumulative compounded motor in opposite direction differentially compounded motor in the opposite direction differentially compounded motor in the same direction cumulative compounded motor in the same direction cumulative compounded motor in opposite direction differentially compounded motor in the opposite direction differentially compounded motor in the same direction ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator if field winding attains the critical resistance machine will generate maximum power. field winding will burn. machine will generate maximum voltage. the voltage generated will be zero. machine will generate maximum power. field winding will burn. machine will generate maximum voltage. the voltage generated will be zero. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In synchronous generator V curve is drawn between either of these. field current on X-axis and armature current on Y-axis. field current on X-axis and power factor on Y-axis. field current on Y-axis and armature current on X-axis. either of these. field current on X-axis and armature current on Y-axis. field current on X-axis and power factor on Y-axis. field current on Y-axis and armature current on X-axis. 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 20 V 50 V zero 40 V 20 V 50 V zero 40 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Tappings of a transformer are provided at the phase end of hv side at the middle of hv side at the neutral side end of hv side at the phase end of lv side at the phase end of hv side at the middle of hv side at the neutral side end of hv side at the phase end of lv side ANSWER DOWNLOAD EXAMIANS APP
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