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lab manual
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  KCT College of Engineering and TechnologyDepartment-EE Department of  ElectricalEngineering LAB MANUAL ELECTRICAL MACHINES-1 B.Tech–3 rd  Semester KCT College OF ENGGND TEC!.   #$$GEFTE!G%!D#STT.SNG%&%    KCT College of Engineering and TechnologyDepartment-EE LIST OF EXPERIMENTS 1.Open circuit and load characteristics of separately excited DC shunt generators2.Open circuit and load characteristics of self excited DC shunt generators3.oad test on d.c. shunt motor !.oad test on d.c. series motor  .oad test on d.c.compound motor #.$peed Control of DC shunt motor.%.$&'()*+(E,$ TE$T.oad test on single-phase transformer .Open circuit and short circuit tests on single phase transformer 1/.$E0+T'O( O (O-OD O$$E$ '( $'(E 04$ET+($O+5E+  Ex. (o6 1    KCT College of Engineering and TechnologyDepartment-EE Date6 Open circuit and lad c!aracteri tic # eparatel$ e%cited &C !unt 'eneratr AIM( To o7tain open circuit and load characteristics of separately excited DC shunt generator and to find its critical resistance APPARATUS RE)UIRE&( SnApparatu Ran'eT$pe)uantit$ 1.8oltmeter9/-3//:85C12.mmeter 9/-2:9/-2/:5C13.+heostat3// ;< 1. -2!.oading rheostat2/ -1 .Three point starter--1#.Connecting =ires--+e>uired PRECAUTIONS(  Ensure that all the connections are tight.  The field rheostat of motor should 7e in minimum resistance position at the time of starting and stopping the machine.  The field rheostat of generator should 7e in maximum resistance position at the time of starting and stopping the machine.    KCT College of Engineering and TechnologyDepartment-EE PROCE&URE( 1* Connections are made as per the circuit diagram. +* fter chec?ing minimum position of motor field rheostat@ maximum positionof generator field rheostat@ ,* D0$T s=itch is closed and starting   resistance is gradually remoAed. * )y adBusting the field rheostat@ the motor is 7rought to rated speed. .* 8oltmeter and ammeter readings are ta?en /* )y Aarying the generator field rheostat@ Aoltmeter and ammeter readings areta?en for OCC characteristics 0* 8ary the enerator field rheostat and ?eep the rated Aoltage. * oad is Aaried gradually and for each load@ Aoltmeter and ammeter readingsare noted for load characteristics. CIRCUIT &IA2RAM(  
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