1
LABORATORY MATERIAL
EE0211 – ELECTRICAL CIRCUITS LAB
DEPARTMENT OF ELECTRICAL & ELECTRONICS ENGINEERING
FACULTY OF ENGINEERING & TECHNOLOGY
SRM UNIVERSITY, Kattankulathur – 603 203
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Guidelines and tips
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Verification of Kirchhoff's Laws & Theorems in Electrical Circuit Experiments, Exams of Engineering
The details of various experiments conducted on electrical circuits to verify fundamental electrical engineering concepts such as Kirchhoff's laws, Superposition theorem, Thevenin's theorem, Norton's theorem, and Maximum Power Transfer theorem. Each experiment includes the aim, apparatus required, procedure, and results.
Typology: Exams
2021/2022
1 / 30
This page cannot be seen from the preview
Don't miss anything!
Related documents
Partial preview of the text
Download Verification of Kirchhoff's Laws & Theorems in Electrical Circuit Experiments and more Exams Engineering in PDF only on Docsity!
LABORATORY MATERIAL
EE0211 – ELECTRICAL CIRCUITS LAB
DEPARTMENT OF ELECTRICAL & ELECTRONICS ENGINEERING
FACULTY OF ENGINEERING & TECHNOLOGY
SRM UNIVERSITY, Kattankulathur – 603 203
CONTENTS
Sl.No. Name of the Experiments Page No.
1 Verification of Kirchoff’s laws 3
2 Verification of Superposition theorem 6
3 Verification of Thevenin’s & Norton’s Theorem 9
4 Verification of Maximum Power Transfer theorem 15
5 Power measurement in 3 phase unbalanced circuits 19
6 Power measurement in 3 phase balanced circuits 20
7 Power measurement using 3 voltmeter & 3 ammeter
method
8 Circuit analysis using CRO 26
9 Circuit transients by digital simulation 28
10 Study of resonance 30
Circuit - KVL
KCL - Theoretical Values: Sl. No.
Voltage E
Current I 1 = I 2 + I 3 I 1 I 2 I 3 Volts mA mA mA mA 1 5 5.68 3.12 2.56 5. 2 10 11.3 6.18 5.12 11. 3 15 17.05 9.37 7.68 17. 4 20 22.73 12.49 10.24 22. 5 25 28.42 15.62 12.68 28.
KCL - Practical Values: Sl. No.
Voltage E
Current I 1 = I 2 + I 3 I 1 I 2 I 3 Volts mA mA mA mA 1 5 5.6 3.1 2.2 5. 2 15 17.2 9.4 7.6 17 3 25 28 15.6 12.7 28.
KVL – Theoretical Values Sl.No. RPS Voltage KVL E 1 E 2 V 1 V 2 V 3 E 1 = V 1 + V 2 V V V V V V 1 5 5 0.58 4.41 0.583 4. 2 10 10 1.16 8.83 1.17 9. 3 15 15 1.75 13.2 1.75 14. 4 20 20 2.33 17.67 2.33 20 5 25 25 2.913 22.08 2.915 24.
KVL - Practical Values Sl.No. RPS Voltage KVL E 1 E 2 V 1 V 2 V 3 E 1 = V 1 + V 2 V V V V V V 1 5 5 0.6 4.4 0.56 5 2 10 10 1.13 8.8 3 1.19 9. 3 15 15 1.72 13.20 1.78 14.
Model Calculations:
Result: Thus Kirchoff’s voltage load and Kirchoff’s current law verified both theoretically and practically.
CIRCUIT - 1
CIRCUIT - 2
CIRCUIT - 3
TABULAR COLUMN
Theoretical Values RPS Ammeter Reading (I) 1 2 mA Circuit – 1 10 V 10 V I = 8.
Circuit – 2 10 V 0 V I’= 3.
Circuit – 3 0 V 10 V I”= 5.
I = I’ I” = 8.
Practical Values RPS Ammeter Reading (I) 1 2 mA Circuit – 1 10 V 10 V I = 8.
Circuit – 2 10 V 0 V I’= 3.
Circuit – 3 0 V 10 V I”= 5
I = I’ I” = 8.5 mA = 3.5 + 5 = 8.5 mA
Model Calculations:
Result: Superposition theorem have been verified theoretically and practically.
Circuit - 1 : To find load current
To find VTH
To find RTH
Thevenin’s Equivalent circuit:
Model Calculations:
Result: Hence the Thevenin’s theorem is verified both practically and theoretically
To find load current in circuit 1:
To find IN
To find RN
Norton’s equivalent circuit
Constant current source
Theoretical and Practical Values E (volts)
IN
(mA)
RN
IL (mA)
Circuit - I Equivalent Circuit Theoretical Values
Practical Values
Model Calculations:
Result: Norton’s was verified practically and theoretically
Circuit - 1
To find VTH
To find RTH
Thevenin’s Equation Circuit
Power VS RL
Circuit – I
Sl.No. (^) RL ( ) I (mA) V(V) P=VI (watts) 1 2 3 4 5 6 7 8 200
400
600
800
1200
1300
1400
1500
To find Thevenin’s equivalent circuit VTH (V) (^) RTH ( ) IL (mA) P (milli watts) Theoretical Value
Practical Value
Experiment No. 6 Date :
THREE PHASE POWER MEASUREMENT
(TWO WATTMETER METHOD)
Aim: To measure the 3-phase active and reactive power by 2 – wattmeter method for (i) resistance load (ii) inductive load
Apparatus Required:
Sl.No. Apparatus Range Quantity 1 Voltmeter (0-600V) MI 1 2 Ammeter (0-20A) MI 1 3 Wattmeter 600V, 10A, UPF 2 4 Wattmeter 600V, 10A, LPF 2
Precautions: THE TPST switch must be kept open initially. Load must not be applied while starting. Procedure: (i) – Resistive load
- Give the connections as per the circuit diagram.
- Give the supply by closing TPST switch.
- Vary the resistance load and note down the corresponding readings.
(ii) Inductive load
- Give the connections as per the circuit diagram.
- Give the supply by closing the TPST switch
- Vary the inductive load and note down the corresponding readings.
for inductive load
for resistive load
Formulae Used:
- Real power = w 1 + w 2
- Reactive power = 3 ( w 1 (^) w 2 )
- Tan = 1 2
w w
w w
- Power factor = cos
Two Wattmeter Method : Resistive Load
V
(volt)
I
(A)
MF =
Wattmeter Reading (W 1 )
MF =
Wattmeter Reading (W 2 )
Power
Cos OBS (watt)
ACT =
OBS X
MF
(watt)
OBS
(watt)
ACT=OBS
x MF (watt)
Real Power (watt)
Reactive power (watt)
460 460 460 460 460 460 460 460 460