Page 82 - CITS - Electrician - Trade Practical
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ELECTRICIAN - CITS




























           Tabular column:

                                                                    Terminal voltage
                   Sl.No    Induced EMF (E0)        I = I  = I                           Speed  (RPM)
                                                    A  F   L              (V )
                                                                            T









           TASK 3 : Study the characteristics of DC Shunt Generator
           1  Make the connections of Prime mover AC motor and DC shunt Generator with voltmeter Ammeter as per
              circuit diagram.
           2  Check the connections, start the prime mover AC motor coupled to DC shunt Generator and check residual
              voltage recorded in the voltmeter.
           3  Increase the field current in shunt field and build up the voltage in DC shunt generator. Record the rated
              induced voltage and field current.
           4  Now, connect the lamp load across the generator terminals through DPST switch, and increase the load
              gradually up to rated current of Generator.
           5  Record the full load current and terminal voltage.
           6  Reduce the load gradually, switch OFF the load switch and stop the prime mover motor.
           7  Plot the characteristics graph of generator.

























                                                           65

                                    CITS : Power - Electrician & Wireman - Exercise 33
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