Problem 7. Find the magnitude and phase angle of currents I, Ib, Ic, and I if Van = V0 = V = 440 Volts. Ib = 1.8 kVAR Ic = CO Motor load = 4 kVA, pf = 72%, lagging In = do Neutral Connected 800 W lighting load
Added by Guillermo N.
Close
Step 1
Since the power factor is not given for the total load, we need to calculate it first. The total load is the sum of the motor load and the lighting load. Motor load = 4 kVA, pf = 72% lagging Motor load apparent power = 4 kVA Motor load real power = 4 kVA * 0.72 = Show more…
Show all steps
Your feedback will help us improve your experience
Paul Gabriel and 91 other Physics 102 Electricity and Magnetism educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Figure 12.70 displays a three-phase delta-connected motor load which is connected to a line voltage of $440 \mathrm{V}$ and draws $4 \mathrm{kVA}$ at a power factor of 72 percent lagging. In addition, a single $1.8 \mathrm{kVAR}$ capacitor is connected between lines $a$ and $b$, while a 800 -W lighting load is connected between line $c$ and neutral. Assuming the $a b c$ sequence and taking $\mathbf{V}_{a n}=V_{p} / 0^{\circ},$ find the magnitude and phase angle of currents $\mathbf{I}_{a}, \mathbf{I}_{b}, \mathbf{I}_{c},$ and $\mathbf{I}_{n}$
Madhur L.
Question-6 Non-salient pole, three-phase, Y-connected synchronous generator with synchronous reactance of X = 14.02 delivers active power P = 1.68 MW to the power system at an inductive power factor. The line-to-line voltage is VL-L = H kV and armature current I = 100 A. Find: The power factor (cos θ), The load angle (δ), The EMF EA induced in the armature winding. The armature winding resistance is negligible (R = 0).
Recommended Textbooks
University Physics with Modern Physics
Physics: Principles with Applications
Fundamentals of Physics
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD