ANSWER: (Option - c) 1.15 VARs
EXPLANATION:
ET = 240V
XL = 50 k
= 50,000
Reactive Power
= (ET2 )/(XL)
= (2402)/(50,000)
= 1.15 VARs (Answer)
In a parallel circuit, ET = 240 V, R = 27 kΩ, and XL = 47 kΩ. What is IT?
9) The voltage V in the frequency-domain circuit shown in Fig. P10.18 is 240/0°V (rms) a) Find the average and reactive power for the voltage source. average power? magnetizing vars? with each impedance branch in the circuit. absorbed average power. absorbed magnetizing vars. b) Is the voltage source absorbing or delivering c) Is the voltage source absorbing or delivering d) Find the average and reactive powers associated e) Check the balance between delivered and f) Check the balance between delivered...
Q13. For a series R-L circuit fed by a voltage V-Vmarcoso, give expressions for (a) the complex power; (b) the reactive power; (c) average power 014. For a parallel R-C circuit fed by a voltage V-Vmacoscor, give expressions for (a) the complex power; (b) the reactive power; (c) average power.
[5] (10 points) For the given circuit, V(t) = 7020 V rms, f = 60 Hz, R = 18 12, C = 50 uF, L = 0.001 H Find the following: (a) Power factor (b) Real Power (time average-power) L īs (c) Reactive Power (d) Complex power (e) Apparent power ww +21 Write your final ansers in the boxes.
Question # 1 - In a series R-L circuit, a voltage of 10 V at 50 Hz frequency produces a current of 750 mA. In the same circuit with same magnitude of applied voltage with a frequency of 75 Hz produces a current of 500 mA. Find out the values of R and L in the circuit. Question # 2 - Derive the equations of active, reactive and apparent powers in a series R-L circuit with sinusoidal AC supply. Question...
Question 4 In Figure Q4, a resistance, R is connected in series with an iron-cored choke coil (r in series with L). The circuit draws a current of 5 A at 240 V, 60 Hz. The voltages across the resistance and the coil are 100 V and 200 V respectively. Analyze the circuit to determine the following (a) the resistance, reactance and impedance of the coil, (b) the power absorbed by the coil, and (c) the power factor (pf) of...
(a) A 240 V 50 Hz factory electrical system has the following loads connected in parallel: Load 1: 4 kW at a power factor of 0.8 lag Load 2: 6 kVA at a power factor of 0.6 lag Load3: 6.5 kVA with 2.5 kVAr of leading reactive power Determine: (C) the overall system power factor, (ii) the value of a power-factor correction capacitor to improve the power factor to unity, and (ii) the value of a power-factor correction capacitor to...
2. Consider the circuit on the right. V-8 v, R.-10 Ω, R,-201, R3-47 Ω. (a) What is the total equivalent resistance? (b) What is the total current? R, Set up (2 points): Calculation (2 points): Answer (1 point)
Help me answer c and d
Q6. A 50 Hz, 25 kVA 7200/240 V transformer has the following equivalent circuit parameters: Primary resistance-1562, secondary resistance-0.02 Ω Primary leakage reactance-140Q, Secondary leakage reactance-0.15Q, Magnetising reactance 30 k2, Core loss resistance 200 k2 (a) The transformer is connected to two loads in parallel. The first load is 10 kW at 0.866 power factor lagging and the second load is 15kVA with a power factor of 0.8 lagging. Find the percentage regulation and...
Please show full working
Q6. A 50 Hz, 25 kVA 7200/240 V transformer has the following equivalent circuit parameters: Primary resistance-1562, secondary resistance-0.02 Ω Primary leakage reactance-140Q, Secondary leakage reactance-0.15Q, Magnetising reactance 30 k2, Core loss resistance 200 k2 (a) The transformer is connected to two loads in parallel. The first load is 10 kW at 0.866 power factor lagging and the second load is 15kVA with a power factor of 0.8 lagging. Find the percentage regulation and power efficiency...