Electrical Machines Tertiary winding in a transformer is mostly star connected. zig - zag delta connected. zig - zag star connected. delta connected. star connected. zig - zag delta connected. zig - zag star connected. delta connected. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Induction motors normally use cast aluminium rotor because aluminium is cheaper in cost. lighter in weight. easy to cast owing to its low melting point and is easily available. of low resistivity. cheaper in cost. lighter in weight. easy to cast owing to its low melting point and is easily available. of low resistivity. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc series motor driving and electric train faces a constant power load. It is running at rated speed and rated voltage. If the speed has to be brought down to 0.25 p.u. the supply voltage has to be approximately brought down to 0.75 p.u 0.25 p.u 0.125 p.u 0.5 p.u 0.75 p.u 0.25 p.u 0.125 p.u 0.5 p.u ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The volt-ampere euation for a long-shunt compound motor is given by Vt= Ea + Iara Vt = Ea + Ia(ra + rs) Vt= Ea– Iara Vt = Ea + Iara+ ILrs Vt= Ea + Iara Vt = Ea + Ia(ra + rs) Vt= Ea– Iara Vt = Ea + Iara+ ILrs ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor wound rotor motor is mainly is used in application where less costly motor is not required. low starting torque. high starting torque. power factor is less. less costly motor is not required. low starting torque. high starting torque. power factor is less. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4-pole DC generator runs at 1500 rpm. The frequency of current in the armature winding is: Zero Hz. 25 Hz. 50 Hz. 100 Hz. Zero Hz. 25 Hz. 50 Hz. 100 Hz. ANSWER DOWNLOAD EXAMIANS APP
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