why starter is used in induction motor

can you tell me/show me, how to manually synchronize 2 DG. preferred with video. ,
Why efficiency of generator is higher than motor at a particular load? Why the motor take high starting current for long time(10- 15 sec) which is connected to Blower as compaire with a motor which is connected with pump with same rating? What is SNMP Card Monitoring in UPS??? , WHAT HAPPENS IF STARTER OF A FLUROSCENT LAMP IS SHORT CIRCUITED AND WE PUT THE SUPPLY ON? What is the gross weight to copper ratio in slip ring induction motor of 4000 HP,6. 6 kv, 372amp, 992 rpm GE motor. why series motor cannot be started on no-load?


WTA used cb? , WHAT SHOULD BE THE MINIMUM IR VALUE FOR LV (380V) CABLES ACCORDING TO IEC/IEEE. IN A MAGNETIC MATERIAL HYSTERYSIS LOSS CAN T BE REDUCED TO ZERO. HY? Can i get some examples of mechanical devices?


Advantages of using bundled conductors? Starters are used to reduce inrush current by applying less voltage in starting. In starting as slip s=1, the induced EMF in rotor circuit would beP sE2=E2, hence heavy current flows in short circuit rotor circuit, reflect to draw heavy primary current from stator circuit, or from the mains, and hence may blow out fuses. In star/delta starter, in starting, star connection, voltage applied toPwinding is phase voltage( Vphase=Vline/sqrt3 ), and will draw less current, once the speed picks up slip will reduced running slip(. 04) from one.


E2 will reduced (. 04E2) and motor winding will put to delta connection (Vline will apply to windig coil). PIn wound rotor starting resistance is connected to rotor circuit, to reduce starting inrush current and increasing the starting torque.

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