Assume that the circuit in Figure 18-1 has a power factor of 78%, an apparent power of 374.817 VA, and a frequency of 400 Hz. The inductor has an inductance of 0.0382 H.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
The missing values in the table.
Answer to Problem 4PP
ET = 150.062 V | ER = 150.062 V | EL = 150.062 V |
IT = 2.498 A | IR = 1.948 A | IL = 1.563 A |
Z = 60.073 Ω | R = 77.024 Ω | XL = 96.007 Ω |
VA = 374.817 | P = 292.357 W | VARSL = 234.55 |
PF = 78% | L = 0.0382 H |
Explanation of Solution
Given data:
The inductive reactance XL is calculated as,
Using the Power factor (PF) and Apparent Power(VA), we can calculate True Power (P) as,
The reactive power VARSL is calculated as,
The relation between reactive power, voltage and inductive reactance is given as,
Since the circuit is parallel R-L,
The current through the inductor is,
The relation between true power P, voltage ER and resistance R is given as,
The current through the resistor is,
The current through the inductor is,
The total current in the circuit
The impedance Z is calculated as,
Power factor angle θ will be,
Want to see more full solutions like this?
Chapter 18 Solutions
Delmar's Standard Textbook Of Electricity
- in lab winding schemes, The-2 induced emf in a coil is emf in .coil for wave winding a) greater than b) smaller than O c) equal to Oarrow_forwardQUESTION FIVE The boost regulator has an input voltage, V = 9 V. The average output voltage, Va = 15 V and average load current, la = 0.8 A. The switching frequency is 20 kHz. If L = 300µH and C = 440µF, determine (a) the duty cycle 8 (b) the ripple current of inductor, AI, (c) the peak current of inductor, I₁, (d) the ripple voltage of filter capacitor,AVC, and (e) the critical values of L and C.arrow_forwardq24 Match the following choose the correct answer Electromagnetic interference .controls voltage at all level scarry inrush current for short period disturbance of frequency around 10MH zzoning regulations shunt or series capacitors High voltage DC Transmission prevents complete shutdown cost of insulation is more Reactive power compensation .controls voltage at all level scarry inrush current for short period disturbance of frequency around 10MH zzoning regulations shunt or series capacitors High voltage DC Transmission prevents complete shutdown cost of insulation is more Tap changing transformers . .controls voltage at all level scarry inrush current for short period disturbance of frequency around 10MH zzoning regulations shunt or series capacitors High voltage DC Transmission prevents complete shutdown cost of insulation is more Single bus bar with sectionalisation ...controls voltage at all level scarry inrush current for short period disturbance of…arrow_forward
- Question 1.) Fill in the blanks with proper wording a.) For a purely resistive circuit, the voltage and current phasors are b.) For a purely inductive circuit, the voltage and current phasors are c.) For a purely capacitive circuit, the voltage and current phasors arearrow_forwardThe rotor winding of the induction motor at no load condition is equivalent to connected to an inductive load short circuited connected to a resistive load O open circuitedarrow_forwardAn inductor is attached to an AC voltage source. Which change will result in a halving of the current?A. Halving the voltage and doubling the frequencyB. Doubling the frequencyC. Halving the frequencyD. Doubling the voltage and halving the frequencyarrow_forward
- Electricity for Refrigeration, Heating, and Air C...Mechanical EngineeringISBN:9781337399128Author:Russell E. SmithPublisher:Cengage LearningPower System Analysis and Design (MindTap Course ...Electrical EngineeringISBN:9781305632134Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. SarmaPublisher:Cengage Learning