WINSEM2022-23_BEEE102L_TH_VL2022230504435_2023-04-06_Reference-Material-I.ppt

Notes for ac circuits

1. 11
AC Circuits
MODULE - II

2. ContentsContents

Introduction to AC voltages and currentsIntroduction to AC voltages and currents

Response of R,L,C individual componentsResponse of R,L,C individual components

Single Phase RL, RC, RLC Series circuits Single Phase RL, RC, RLC Series circuits

Power in AC circuits-Power Factor Power in AC circuits-Power Factor

Problems in series AC circuitsProblems in series AC circuits

Three Phase Systems / Star & Delta ConnectionThree Phase Systems / Star & Delta Connection

Problems in 3 phase AC circuitsProblems in 3 phase AC circuits

Electrical Safety/ Fuses and EarthingElectrical Safety/ Fuses and Earthing
22

3. 33
Calculate the line currents in the three-wire Y-Y system of Fig.
P25.

4. Since the source voltages in Fig. are in positive sequence and the line
currents are also in positive sequence,
44
where

5. 55
Determine the total average power, reactive power, and complex power
at the source and at the load.
P26.

6. 66

7. 77
Three identical coils, each of resistance 15 Ω and inductance 42 mH are
connected (a) in star and (b) in delta to a 415 V, 50 Hz, 3-phase supply.
Determine the total power dissipated in each case.
P27.

8. 88

9. 99

10. 1010
P28.
 0230
ab
V
?
AB
I
?
aA
I
1512jZ 

P29

11. 1111
 0230
an
V
?
AN
I
?
aA
I
1512jZ
Y 
P30