Add Abstract, Introduction and Conclusion to the Inductors in DC Circuits Lab. Input calculationElectric Circuits Lab

Series RL Circuits: Phase Angle, Phase Lead, and Inductors as Differentiators

I.

Objectives:

After completing this lab experiment, you should be able to:

1. Understand the effect of frequency on inductive reactance.

2. Measure the impedance of an RL circuit.

3. Measure the phase angle and phase lead of an RL circuit using the oscilloscope.

4. Draw the impedance and voltage phasor diagrams.

5. Understand how an inductor differentiates current.

II.

Parts List:

1. Resistors 100 Ω, 1 kΩ, 10 kΩ.

2. Inductors 1 µH, 100mH.

III.

Procedures:

Part I

:

1.

Connect the following circuit.

Figure 1: RL Circuit

2.

Connect one DMM across the resistor and one DMM across the inductor.

Set both DMMs to read AC Voltage.

Measure the voltage drop across each component.

Record the result in

Table

1.

3. Use Ohm’s law to

calculate the current flowing through the resistor. Since the circuit in

Figure 1 is a series RL circuit, the same current will flow through the inductor and the resistor.

Record the result in

Table 1.

Total current I =

4.

Calculate the inductive reactance using Ohm’s law.

Record the result in

Table 1.

Inductive Reactance XL =

5. Finally,

calculate the inductive reactance using the inductive reactance equation.

Record the result in

Table 1.

Inductor L1

Voltage across, R

845.958 mV

Voltage across, L

533.246 mV

Total Current, I

0.846 mA

Inductive Reactance, XL

630.35 ohms

Computed Reactance, XL

628.32 omhs

Table 1: Calculated and measured values

6.

Adjust the function generator frequency following the steps in

Table 2. Use the DMM to

measure the voltage across the resistor and the inductor.

Record your measurements.

Frequency (in Hz)

VR

(measured)

VL

(measured)

I =

XL =

XL = 2πfL

(calculated)

300

982.58 mV

185.81 mV

0.9856 mA

189.10 ohms

188.50 ohms

1k

845.958 mV

533.246 mV

0.846 mA

630.35 ohms

628.32 ohms

3k

467.467 mV

833.996 mV

0.468 mA

1.78 kΩ

1.88kΩ

5k

302.425 mV

953.161 mV

0.302 mA

3.15 kΩ

3.14 kΩ

7k

221.027 mV

975.265 mV

0.221 mA

4.41 kΩ

4.40 kΩ

9k

173.593 mV

984.811 mV

0.174 mA

5.66 kΩ

5.66 kΩ

11k

142.743 mV

989.751 mV

0.143 mA

6.92 kΩ

6.91 kΩ

13k

121.133 mV

992.626 mV

0.121 mA

8.20 kΩ

8.17 kΩ

15k

105.174 mV

994.442 mV

0.105 mA

9.47 kΩ

9.43 kΩ

Table 2: Calculated and measured values

7.

Plot Electric Circuits Lab

Instructor: ———–

Series RL Circuits

Student Name(s): Click or tap here to enter text.

Click or tap here to enter text.

Honor Pledge:

I pledge to support the Honor System of ECPI. I will refrain from any form of academic dishonesty or deception, such as cheating or plagiarism. I am aware that as a member of the academic community, it is my responsibility to turn in all suspected violators of the honor code. I understand that any failure on my part to support the Honor System will be turned over to a Judicial Review Board for determination. I will report to the Judicial Review Board hearing if summoned.

Date: 1/1/2018

Contents

Abstract 3

Introduction 3

Procedures 3

Data Presentation & Analysis 4

Calculations 4

Required Screenshots 4

Conclusion 4

References 5

Abstract

(This instruction box is to be deleted before submission of the Lab report)

What is an Abstract?

This should include a brief description of all parts of the lab. The abstract should be complete in itself. It should summarize the entire lab; what you did, why you did it, the results, and your conclusion. Think of it as a summary to include all work done. It needs to be succinct yet detailed enough for a person to know what this report deals with in its entirety.

Objectives of Week 2 Lab 2:

· Understand the effect of frequency on inductive reactance.

· Measure the impedance of an RL circuit.

· Measure the phase angle and phase lead of an RL circuit using the oscilloscope.

· Draw the impedance and voltage phasor diagrams.

· Understand how an inductor differentiates current.

Introduction

(This instruction box is to be deleted before submission of the Lab report)

What is an Introduction?

In your own words, explain the reason for performing the experiment and give a concise summary of the theory involved, including any mathematical detail relevant to later discussion in the report. State the objectives of the lab as well as the overall background of the relevant topic.

Address the following items in your introduction:

· What is Impedance for an RL circuit? (Give formula)

· What is phase angle for an RL circuit? How is it calculated?

· What is phase lead for an RL lead circuit? How is it calculated?

· How/why does an inductor differentiate current? Give formula.

Procedures

Part I

:

1.

Connect the following circuit.

Figure 1: RL Circuit

2.

Connect one DMM across the resistor and one DMM across the inductor.

Set both DMMs to read AC Voltage.

Measure the voltage drop across each component.

Record the result in

Table 1.

3. Use Ohm’s law to

calculate the current flowing through the resistor. Since the circuit in

Figure 1 is a series RL circuit, the same current will flow through the inductor and the resi

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