In this slide active, reactive and apparent power are explained

1. Active Power?
Reactive Power?
Apparent Power?

2. Active Power
Reactive Power
Apparent Power
AC Circuits DC Circuits
DC Power

3. Instantaneous Power
V, I
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5. Instantaneous Power
V, I
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6. Instantaneous Power
V, I
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7. Instantaneous Power
V, I
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# Positive
# Negative

8. Instantaneous Power
V, I
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# Positive
# Negative
Positive Power

9. Instantaneous Power
V, I
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# Positive
# Negative
Negative Power

10. V, I
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11. V, I, P
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12. V, I, P
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13. V, I, P
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# In case of Resistive Load Instantaneous Power always remain Positive
# Active Power is always responsible for useful work
# Active Power is represented by “P” and is given by relation by “P = V I Cos θ” and its unit is “Watt”

14. V, I
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15. V, I, P
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16. V, I, P
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17. V, I, P
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18. V, I, P
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# Reactive Power becomes positive and negative also
# Reactive power oscillates between source and load and do not take part in useful work done
# Reactive Power is represented by Q = V I Sin θ and its unit is Volt Ampere Reactive or VARs
# Reactive Power; Inductive VARs, Capacitive VARs and Watt less Power

19. V, I
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20. V, I
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21. Active Power
P = V ICos θ Watt
P = V I x 1 = V I Watt
Reactive Power
Q= V ISin θ VARs
Q = V I x 0 = 0 VARs
Apparent Power
S = V I Volt Amp
S = P, Q = 0
Active Power
P = V ICos θ Watt
P = V I x 0 = 0 Watt
Reactive Power
Q= V ISin θ VARs
Q = V I x 1 = V I VARs
Apparent Power
S = V I Volt Amp
S = Q , P = 0
Active Power
P = V ICos θ Watt
P = V I x 0 = 0 Watt
Reactive Power
Q= V ISin θ VARs
Q = V I x 1 = V I VARs
Apparent Power
S = V I Volt Amp
S = Q, P = 0

22. Active Power
P = V ICos θ Watt
P = V I x 0.8 Watt
Reactive Power
Q= V ISin θ VARs
Q = V I x 0.6 VARs
Apparent Power
S = V I Volt Amp
S = V I

23. Thank You