M4-lab

Consider the RC circuit in Figure 2 below. Assuming the switch has been open for a long time before it is closed, fill in a table providing the current through each component and the voltage across each component immediately after the switch is closed, and a very long time after the switch is closed. Next, figure out the time constant for the circuit. (Hint: Assign currents to each branch. Set up the necessary KVL and KCL equations. Eliminate all but one variable to get an equation for just one of the currents. You shouldn’t have to solve this equation to recognize the time constant!)

For the series RL circuit shown in the figure below, answer the following questions and justify your answer.If the current is kept constant, does the coil have inductance?If the current is kept constant, does the coil affect the current value?Can the reverse emf ever be greater than the battery emf?

Which of the following statements is true of an open component in a series circuit? a.. The circuit current will be higher than normal. b. The voltage drop across the component will be lower than normal. c. The voltage drop across the component will be higher than normal. d, The resistance of the component will be lower than normal.

6. The main difference between resistance R and capacitive reactance X, is that (a) Xc is the same for both DC and AC signals, where R depends on frequency of the AC signal (b) R is the same for both DC and AC signals, where X depends on the frequency of an AC signal (c) R is measured in ohms and X is measured in farads (d) None of the above

An inductor and resistor are connected in parallel to a 120-V, 60-Hz line. The resistor has a resistance of 50 ohms, and the inductor has an inductance of 0.2 H.   How many degrees out of phase are the current and voltage?

4 and 5

With V1, voltage peak to peak is 10 volts, R1=200 Ohm, R2=1000 Ohm and C1= 300 nF. Find Vx, voltage across the the capacitor, C1 and R2 when the frequency is 1000 Hz and 10000 Hz

answer the following based on the 3-phase transfomer configuration in figure 7, worksheet4. Voltmeter V4 is measuring - A- line voltage, B- phase voltage, C- neither "a" nor "b", D- both "a" and "b" Voltmeter V5 is measuring - A- Line voltage, B-phase voltage, C- neither "a" nor "b", D- both "a" and "b" Hysteresis loss is caused by_______. A-low voltage DC, B-poorly insulated conductors, C- molecular friction, D- none of the above

If a circuit has a resistance of 3002 and a series inductance of 5002, what is the relationship between the applied circuit voltage and the circuit current? The applied voltage lags the circuit current. The phase shift between the circuit voltage and current changes with time. The applied voltage is in phase with the circuit current. The applied voltage leads the circuit cur Previous Page Next Page Page 2 of 10

3. What is the effect as more inductors are added in parallel to a circuit? A. Increased total inductance. B. Increased total inductive reactance. C. Increased total resistance. D. Increased total circuit current.

4. What is the effect as more inductors are added in series to a circuit? A. Decreased total inductance. B. Decreased total inductive reactance. C. Decreased total circuit current. D. Decreased total resistance.

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Kindly answer all of the questions please, I will rate you with like/upvote. Please answer all of the questions. Thank you so much.

If the charging resistor was twice as large as the discharging resistor in Figure 4, theamplitudes of the charging and discharging waveforms would be ________.a. The sameb. Different

Task 3 A three phase, four wire star connected load consisting of: ZR: a resistor of 9500 in series with a 3H inductor ZB: a resistor of 1950 ZY: a resistor of 1950 in series with a 4µF capacitor Using the equipment available in the power lab (Room T017), connect the given load to a three-phase supply available in the lab and: 3.1. Determine the current of each line and the neutral current and measure the total power supplied by the source. 3.2. Analytically, calculate all currents and the total power and compare with those obtained in measurements. 3.3. Device a method and measure the waveform of the neutral current. Discuss the obtained waveform and the reason for any distortion in the waveform 3.4. Validate your calculations using computer simulation

AC Circuits Sine-wave generator f- 25 kHz V₁ = 3.0 V VR 888 100 mH Figure 6-Test Circuit 3. Using a two-channel oscilloscope, measure the peak-to-peak voltage VR across the resistor and the peak-to-peak voltage VL across the inductor. Measure the voltage across the inductor using the difference technique described in a previous experiment. Record the voltage readings in Table 2. VL 10 k 1 XL Table 2- Measured and Calculated Values (f = 25 kHz) ZT

1. A purely resistive circuit the current is leading by 90° with respect to voltage. 2. A purely inductive circuit the current is lag behind the voltage by 90°. 3. A purely capacitive circuit the current is lead by 90° with respect to the voltage. 4. A capacitor element stored magnetic energy. 5. An inductor element stored electrical energy. 6. Resistor elements consume power. 7. Angle between current and voltage is called power. 8. The power factor angle for a purely resistive is zero. 9. The power factor angle for a purely inductive load is -90°. 10. The power factor of a purely capacitive is leading.

Please show you detailed solution Number 10 A voltage of 250 volts at 50 Hz is impressed on a circuit having a 60-ohm resistor, 35-?F capacitor, and a 0.25-henry inductor in series. Determine power factor. A. 0.979 C. 0.924 B. 0.862 D. 0.707

A series circuit consists of a 66.4 microfarad capacitor and variable resistor. For what two values of resistance will the power taken by the circuit be 172. 8 W, if the impressed 60 Hz emf is 120 V?