#6. A 110-V rms, 60-Hz source is applied to a load impedance Z. The apparent power entering the load is 120 VA at a power factor of 0.707 lagging. (a) Calculate the complex power. (b) Find the rms current supplied to the load. (c) Determine Z. (d) Assuming that Z = R + jwL, find the values of R and L. Show all work problem step by step

Q.1) A single phase load consisting of 5 2 in series with an inductance of 0.02297 H is operated in a phase control mode with a of 90°. The source is 240 V RMS, 60HZ. Find: a) Draw the waveform of VTI and VR. b) Find the conduction angle (6). c) Calculate the RMS value of load current. d) Find the power factor e) What is the minimum value of a for which phase control is in effet. f) Find the size of the first three terms in the Fourier series for the current. T Zoom

One side of a transformer has What is the voltage (in V rms) at the secondary? 1,800 turns while the other side has 450 turns. The high voltage side is connected to a 240 Vrms source. The low What is the current (in A rms) at the secondary? What is the current (in A rms) out of the source? What is the value of the load impedance when referred to the primary? • Referred impedance = voltage side (secondary) is connected to an impedance ZL = 20 + j10 Q. Provide at least 4 digits after the decimal point. +j_ N What is the value of the source voltage (in V rms) when referred to the secondary?

A load is operating in a chopper circuit as shown in the figure. It has a duty cycle of 0.4 and chopping frequency is 150 Hz. (consider continuous operation). The value of E is L=0.06H 200V (B) 80V (D) 50V (A) 70V (C) 60V

The step down DC chopper uses DC source voltage V(dc) = 200 V and resistive load impedance of 10 ohm. The duty cycle is 0.4 the voltage drop across the switch may be taken as zero, Calculate :   (a) Average and RMS value of output voltage.  (b) Average and RMS value of output current.

n shown in Figure (4); Find the rms value.

Suppose I have two peak phasor voltages, V, = 100245° and V, = 75Z-60°. Circle Your Choices: I. The frequencies associated with the phasors are (0 Hz, 60 Hz, 50 Hz, Unknown). II. The rms value of the first phasor is (100, 70.7, 141, 200) volts. III. If you want to add these two phasors, the frequencies must be (60 Hz, 50 Hz, The same, Integer multiples of a given frequency.)

A load consisting of induction motors is drawing 40 kW average real power from a 110-V (RMS), 6 Hz power line at a power factor of 0.7. We need to improve the p.f. to 0.9. a) Are we going to add a capacitor or an inductor to correct the power factor? b) How large is the capacitor or inductor? Add a capacitor in series with load and C= 247UF Add a capacitor in parallel with the load and C= 4699uF O Add an inductor in series with load and L- 30uH O Add an inductor in series with the load andL= 0.9H

You have been asked to investigate the loading effects on an alternator supplying a load and also charging a car battery at the same time. The output of the alternator has been rectified to smooth dc, and the circuit is shown below.   Using Kirchhoff analysis, determine the initial current in each section along with its direction and the potential difference across the load.

What is the load factor? What happens when load factor = 1?