The document outlines various electrical circuit experiments and their setups conducted by students and faculty in the Department of Electrical and Electronics Engineering. It includes descriptions for brake tests on DC motors, load tests on induction motors, transformer tests, power measurement methods, and the application of Thevenin's and Norton's theorems. Each experiment specifies the equipment used, common mistakes, and fuse ratings essential for safety and performance.

1. E.C.M LAB CIRCUITS
(ANIMATED)
RESEARCHED AND PRESENTED BY-
Mohammed Imran
( ASSISTANT PROFESSOR)
DEPARTMENT OF ELECTRICAL AND ELECRONICS ENGINEERING
CONTRIBUTIONS BY-
-Abrar Rafat (MECHANICAL 2nd year)
-Syed Ateeq (MECHANICAL 2nd year)
-Zia Ul Haq (MECHANICAL 2nd year)
-Mohammed Maqsood (MECHANICAL 2nd year)

2. 1.BRAKE TEST ON DC COMPOUND MOTOR
220 V,
D.C.
SUPPLY
BRAKE DRUM
S1
S2
DPST
DPST
FUSE
FUSE
V
A
Z
ZZ
YY
Y
M
AA
A
4 POINT STARTER
L Z
0-300V,M.C.
0-20A,M.C.
L
-
A
NOTE:- 1. RED common mistakes
2. FUSE RATING WILL BE 125%
OF FULL LOAD

3. 2.SPEED CONTROL OF DC SHUNT MOTOR
220 V,
D.C.
SUPPLY
DPST
DPST
FUSE
FUSE
A
M
3 POINT STARTER
L Z A
515 Ω
min
V
A
AA
Z
100 Ω
Max.
0-300V,M.C.
0-5A,M.C.
ZZ
NOTE:- 1. RED common mistakes
2. FUSE RATING WILL BE 125%
OF FULL LOAD

4. 3.BRAKE TEST ON DC SERIES MOTOR
220 V,
D.C.
SUPPLY
BRAKE DRUM
S1
S2
FUSE
FUSE
V
A
YY
Y
M
AA
A
2 POINT STARTER
L A
0-300V,M.C.
0-20A,M.C.
+
-
DPST
DPST
NOTE:- 1. RED common mistakes
2. FUSE RATING WILL BE 125%
OF FULL LOAD

5. 4.BRAKE TEST ON DC SHUNT MOTOR
220 V,
D.C.
SUPPLY
DPST
DPST
FUSE
FUSE
A
M
3 POINT STARTER
L Z A
ZZ
V
0-300V,M.C.
S1
S2
BRAKE DRUM
0-15A,M.C.
A
Z
AA
NOTE:- 1. RED common mistakes
2. FUSE RATING WILL BE 125%
OF FULL LOAD
100ohms min

6. 5.LOAD CHARCTERISTIC OF DC SHUNT
GENERATOR
220 V,
D.C.
SUPPLY
FUSE
FUSE
M
3 POINT STARTER
L Z A
ZZ A
AA
G
A
AA
A
ZZ
A
V
Z
Z
L
O
A
D
0-2A,M.C.
0-20A,M.C.
0-300V
M.C.
DPST
DPST
NOTE:- 1. RED common mistakes
2. FUSE RATING WILL BE 125%
OF FULL LOAD
100Ω MAX

7. 6.LOAD TEST ON 3-PHASE
INDUCTION MOTOR
3 phase
415 v
supply
R
Y
B
N
STAR/DELTA STARTER
R
Y
B
A
V
0-10,M.I
5/10 A,300/600 upf
fuse
fuse
fuse
TPST
TPST
TPST Brake drum
S1 S2
NOTE:- 1. RED common mistakes
2. FUSE RATING WILL BE 125%
OF FULL LOAD
0-600v,M.I

8. 7.OPEN AND SHORT CIRCUIT TEST ON A
TRANSFORMER
A
V OPEN CIRCUIT
M L
C V
1- phase A.C
supply
A
V
SHORTCIRCUIT
M L
C V
1- phase A.C
supply
fuse
fuse
fuse
fuse
0-300v, MI
0-1A, MI
0-15A,MI
0-75V, MI
AUTO TRANSFORMER
HIGH VOLTAGE RATED
AUTO TRANSFORMER
HIGH CURRENT RATED
PH
DPST
DPST
DPST
DPST
N
PH
N
L1
L2 H1
H2
L1
L2
H1
H2
2.5/5A,150/300V lpf
15/30A,75/150V upf
Red Common mistakes

9. 8.MEASUREMENT OF POWER BY TWO
WATTMETER METHOD
3 phase
415 v
supply
R
Y
B
STAR/DELTA STARTER
R
Y
B
A
V
0-10,M.I
5/10 A,300/600 upf
fuse
fuse
fuse
TPST
TPST
TPST Brake drum
S1 S2
NOTE:- 1. RED common mistakes
2. FUSE RATING WILL BE 125%
OF FULL LOAD
0-600v,M.I
M
C
V
L
L
5/10 A,300/600 upf
V
M
C
600
600

10. 9.MAGNETISATION CHARACTERISTICS Of
DC SPEARATELY EXCITED GENERATOR
V
220v
Dc
supply
FUSE
FUSE
FUSE
FUSE
DPST
DPSTDPST
DPST
3 POINT STARTER
L Z A
M G
A
SPST
220v
Dc
supply
0-1 A,M.C
0-300V,M.C
ZZ
Z
ZZ
Z
A
AA
A
AA
1000 Ω /A
Max.
NOTE:- 1. RED common mistakes
2. FUSE RATING WILL BE 125%
OF FULL LOAD
100 Ω
min

11. 10.THEVENINS THEOREM
230 V,1Phase,A.C
Supply
DPST
DPST
R P S
0-30V
R 1 R 2
R 3 Vth R L
Circuit to find Vth
A
B

12. R1 R2
R3 RL
Circuit to find Rth
Rth

13. 230 V,1`-Phase,A.C
Supply
DPST
DPST
R P S
0-30V
R 1 R 2
R 3
A
B
A
I load
Rl

14. NORTONS THEOREM
230 V,1Phase,A.C
Supply
DPST
DPST
R P S
0-30V
R 1 R 2
R 3 ISC R L
Circuit to find Isc
A
B
A

15. NORTONS THEOREM
R1 R2
R3 RL
Circuit to find RN
Rn

16. NORTONS THEOREM
230 V,1-Phase,A.C
Supply
DPST
DPST
R P S
0-30V
R 1 R 2
R 3 R L
Circuit to find IL
A
B
A
D.R.B
I load