I. Two electric loads are connected in parallel to a source of value u(t) = 300 cos(380t) V. The first load absorbs 3 kW at a power factor of 0.5 lagging. The second load absorbs 4kW at a power factor of 0.8 leading. (a) Find the current I through the first load. (b) Find the total current I c) Find the total apparent power (d) Find the total average power e) Find the overall power factor of the two loads...
V(t) = 1920s (5t +96) v i(t) = 19 Cos(5t +96) I Find * Apparent Power * Real Power * Reactive Power * Power factor
Which of the following equations is true for an inductor? v(t) = Liſt) i(t) = L u(t) ® v(t) = Lít i(t) = 1 dole Question 3 5/5 pts What is the RMS value of the voltage v(t) = 2 cos(37t + ?)? For the circuit shown, if Vs = 92 - 30° V and Z1 = 422, what is the value of Vį? + I + ! 5/5 pts Question 5 What is the rectangular form of 220.37 +...
Using rms values to represent their magnitudes, the voltage across and the current into a load are as follows in phasor form: v - Ve/o° and I -le-i Show that the instantaneous power p() v)i(t) can be written as pt) PP cos 2Q sin 2ut, where average power cos φ and reactive power Q-VI sin φ if I'= 120 V, 1-| A, and Φ = 30°, find the actual value of P. Q. S and power factor (PF). Is this...
Not yet answered P Flag question Question 3 Marked out of 15.00 A 240 V source energizes the parallel combination of a purely resistive 6 kW heater and an induction motor that draws 7 kVA at 0.8 lagging power factor. The overall load power factor is: Select one or more: a. pf = 0.94 (Leading) b. pf = 19.99 c. pf = 0.94 (lagging) d. pf = 0.34 (Lagging)
If v(t) = 120Vrms*cos(377t+60) i(t) = 2Arms*cos(377t) Find the instantaneous power, average power, power factor and complex power.
142 ?? 1 2 10 cos Volt I H In the above circuit, v(0)7 V for all pacitors, and i (0)4 A a) Draw the qual circuit is S-domain considering the initial conditions. b) find V2(s) and then V(t) using nodal analysis.
1.2 kW 0.8 kVAR (cap) (a) In the circuit shown in Fig. Qla, find: Construct the power triangles for the loads. (ii) Find the overall complex power consumed in the loads. (iii) Find the current lo. 100/90° v (rms) 2 kVA 0.707 pf leading 4 kW 0.9 pf lagging Fig. Qla (b) [This part has no connection to part (a)] Find the value of the parallel capacitance needed to correct a load of 140 kVAR at 0.85 lagging pf to...
Given v(t) = 60cos(wt - 10) V and i(t) = 1.5 cos(wt +50)A find a. Complex Power (S) (2 pts.) b. Apparent Power (SI)(1 pts.) C. Real Power (P) (1 pts.) d. Power factor (2 pts.) e. Reactive Power (Q) (1 pts.) f. Impedance (Z) (1 pts.) g. Capacitance (C) ((2 pts.)
Problem 4.4 For the AC circuit in Fig. 4.4, I PF leading. oad # 1 is 1000 VA at 0.7 PF lagging, load # 2 is 700 VA at zero (a) Determine real power, rea (b) D etermine real power, reactive power and power factor of the input source ( etermine the reactance of a capacitor to be connected in parallel with the source to improve the source power factor to unity Load 36 Fig. 4.4