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Unformatted text preview: c) Find the power absorbed by the load. 3-The supply is 240V, 50 HZ and the load is resistance of 1 & in series with back e.m.f. of 20 V and with L=0.01H. The delay angle is 60 o . a) Sketch the waveforms of V d ( ± t) , I o ( ± t) ,V T ( ± t). b) Calculate the mean load voltage and current. 4-The single phase half wave circuit with free wheeling diode is used to supply a heavily inductive load of 15A from a 240V ac supply. a) Sketch the waveforms of V d ( ± t) , I T ( ± t) ,I D ( ± t). b) Sketch the waveforms of V D ( ± t) , V T ( ± t). c) Calculate the mean load voltage for firing angle 45 o ,135 o ,180 o ....
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- Spring '10
- Alternating Current, Electrical resistance