|
|
Problem 1
The load in the circuit absorbs an average power of 80 W and a reactive power of 60 VAR. What is the power factor of the load? What are the values of the resistor and the inductor if v = 110 cos (2π60t) V? |
|
AC Circuits >
Power >
Power Factor
Keywords:
Length: 5:15
Date Added: 2007-07-26 13:18:13
Filename: ac_power_pf_ex1_eng
ID: 347
|
|
|
Problem 2
Three 220 Vrms loads are connected in parallel. Load 1 absorbs an average power of 800 W and a reactive power of 200 VAR. Load 2 absorbs an average power of 600 W at 0.6 lagging power factor. Load 3 is a 80 Ω resistor in series with a capacitive reactance of 60 Ω. What is the pf of the equivalent load as seen by the voltage source? |
|
AC Circuits >
Power >
Power Factor
Keywords:
Length: 6:48
Date Added: 2007-07-26 13:20:54
Filename: ac_power_pf_ex2_eng
ID: 348
|
|
|
Problem 3
In the circuit, Z1=100+j60 Ω and Z2=10-j20 Ω. Calculate the pf of the equivalent load as seen by the voltage source and the total complex power delivered by the voltage source. |
|
AC Circuits >
Power >
Power Factor
Keywords:
Length: 4:27
Date Added: 2007-07-26 13:23:55
Filename: ac_power_pf_ex3_eng
ID: 349
|