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EXPERIMENTS
IN
ENERGYCONVERSION
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Experiment No. 1Starting and speed control of a Shunt Motor
Reverse and Forward
Experiment No. 2AC Series Motor Reverse and Forward
Experiment No. 3Compound Motor
Experiment No. 4Capacitor-Run Motor
Experiment No. 5Single phase Induction Motor
Experiment No. 6Capacitor-Start motor
Reverse
Experiment No. 7CAPACITOR START DUAL VOLTAGE 230/115, SINGLE PHASE
HIGH VOLTAGE CONNECTION
FORWARD
Experiment No. 8Capacitor-Start Dual Voltage 230/115 Single Phase
High Voltage Connection
Reverse
Experiment No. 9Capacitor-Start Dual voltage 230/115, single phase
Low Voltage Connection
Forward
Experiment No. 10Capacitor-Start Dual voltage 230/115, single phase
Low Voltage Connection
Reverse
Experiment No. 11Three Phase Squirrel cage Induction Motor
Connecting six terminal leads 380/230 V, three phase motor
High Voltage connection
WYE
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Experiment No. 12Connecting nine terminal leads 460/230 V, three phase motor
High Voltage Connection
Delta
Experiment No. 13Connecting nine terminal 460/230 V, three phase motor
Series Wye
STAR
Experiment No. 14
Load characteristics of Series, Shunt and Compound motors
Experiment No. 15DC generator
Experiment No. 16Parallel operation of separately excited generators
Experiment No. 17Synchronous Motors
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Experiment No. 1
Starting and speed control of a Shunt Motor
Reverse and Forward
Objectives:
To be able to familiarize the parts of a Shunt Motor.
To be able to install and start and control the speed of Shunt Motor in the forward
and reverse direction.
Materials:
DC Shunt Motor
DC milliammeter
DC power supplyFuses
swithces
Connecting wires
Clamp Ammeter
HV DC VOLTAGE supply
Multi-tester
Tachometer
Diagram
Procedure:
Determine the parts of the Shunt Motor
Measure the different resistances of the motor using the ohmmeter.
Record on the Table 1.
Determine the revolution of the motor using the tachometer.
Determine the name plate data on the motor.
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Table 1:
Shunt Field resistance, Revolution per
minute, RPM
Total resistance, Rt Supply Voltage
Starting Current Current
Running Current Power
Poles
Computations:
Show your formula and solution
Using the values for Table 1 determine your frequency and power:
Question:
What are the behavior of a shunt generator under load?
What are the safety precautions when handling motors?
What determines the direction of the motor?
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Observations:
Conclusions:
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Experiment No. 2
AC Series Motor
Reverse and Forward
Objectives:
To be able to familiarize the parts of a Series Motor.
To be able to install and operate the Series Motor in the forward and reverse
direction.
Materials:
AC Series Motor
Variac
Connecting wiresClamp Ammeter
Multi-tester
Tachometer
Diagram
Forward Reverse
A
2
1
s er i es f i el d
A
2
1
ser
i es f i el d
SERIES MOTOR
Procedure:
Determine the parts of the Series Motor
Measure the different resistances of the motor using the ohmmeter.Record on the Table 1.
Determine the revolution of the motor using the tachometer.
Determine the name plate data on the motor.
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Table 1:
Series Field resistance, Revolution per
minute, RPM
Total resistance, Rt Supply Voltage
Starting Current Current
Running Current Power
Poles Armature
Resistance
Computations:
Show your formula and solution
Using the values for table 1 determine your frequency and power:
Question:
What are the behavior of a series generator under load?
Observations:
Conclusions:
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Experiment No. 3
Compound Motor
Objectives:
To be able to familiarize the parts of a Compound Motor.
To be able to install and operate the Compound Motor.
Materials:
Variac
Compound Motor
Electrolytic capacitors
Connecting wires
Clamp Ammeter
Multi-testerTachometer
Diagram.
A
2
1
A
2
1
ser i es
f i el d ser i es f i el d
Shunt fieldshunt field
COMPOUND MOTOR
Procedure:
Determine the parts of the Compound Motor
Measure the different resistances of the motor using the ohmmeter.
Record on the Table 1.
Determine the revolution of the motor using the tachometer.
Determine the name plate data on the motor.
Table 1:
Shunt Field resistance, Revolution per
minute, RPM
Total resistance, Rt Supply Voltage
Starting Current Current
Running Current Power
Poles Armature
Resistance
Series Field resistance
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Computations:
Show your formula and solution
Using the values for table 1 determine your frequency and power:
Question:
What are the behavior of a compound generator under load?
Observations:
Conclusions:
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Experiment No. 4
Capacitor-Run Motor
Objectives:
To be able to familiarize the parts of a CAPACITOR-RUN MOTOR.
To be able to install and operate the CAPACITOR-RUN MOTOR.
Materials:
Variac
Capacitor Run Motor
Electrolytic capacitors
Connecting wires
Clamp AmmeterMulti-tester
Tachometer
Diagram.
SWRW
Electrolytic Capacitor
2
Capacitor Run
Procedure:
Determine the parts of the Capacitor Run Motor.
Measure the different resistances of the motor using the ohmmeter.Record on the Table 1.
Determine the revolution of the motor using the tachometer.
Determine the name plate data on the motor.
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Table 1:
Running winding
resistance, RW
Revolution per
minute, RPM
Total resistance, Rt Supply Voltage
Starting Current Current
Running Current Power
Poles Starting winding
S.W.
Computations:
Show your formula and solution
Using the values for table 1 determine your frequency and power:
Question
1. What are the characteristics of a capacitor run motor?
Observations:
Conclusion:
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Experiment No. 5
Single Phase Induction Motor
Objectives:
To be able to familiarize the parts of a Induction Motor.
To be able to install and operate the Induction Motor.
Materials:
Variac
Inductions Motor
Electrolytic capacitors
Connecting wires
Clamp Ammeter
Multi-testerTachometer
Fuses
Switches
Tachometer
Wattmeter, single phase
Diagram.
SWRW
Electrolytic Capacitor
2
C.S.
Induction Motor
FORWARD
Procedure:
Determine the parts of the Induction Motor.
Measure the different resistances of the motor using the ohmmeter.
Record on the Table 1.
Determine the revolution of the motor using the tachometer.
Determine the name plate data on the motor.
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Table 1:
Running windingresistance, RW
Revolution perminute, RPM
Total resistance, Rt Supply Voltage
Starting Current Current
Running Current Power
Poles Armature
resistance
Centrifugal Switch
Resistance C.S.
Starting winding
resistance, S.W.
Computations:
Show your formula and solution
Using the values for table 1 determine your frequency and power:
QUESTIONS:
Typical applications of Capacitor start motor.
What is an induction motor?
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Observations:
Conclusions:
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Experiment No. 6
Capacitor-Start Induction motor
Reverse
Objectives:
To be able to familiarize the parts of a CAPACITOR-START INDUCTION
MOTOR.
To be able to install and operate the CAPACITOR-START INDUCTION MOTOR.
Materials:
Variac
Capacitor-Start induction Motor
Electrolytic capacitors
Connecting wiresClamp Ammeter
Multi-tester
Tachometer
Diagram.
SWRW
Electrolytic Capacitor
2
C.S.
T1
CAPACITOR START
REVERSE
Procedure:
Determine the parts of the Capacitor Start Motor.
Measure the different resistances of the motor using the ohmmeter.
Record on the Table 1.
Determine the revolution of the motor using the tachometer.
Determine the name plate data on the motor.
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Observations:
Conclusions:
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Experiment No. 7
CAPACITOR START DUAL VOLTAGE 230/115, SINGLE PHASE
HIGH VOLTAGE CONNECTION
FORWARD
Objectives:
To be able to familiarize the parts of a CAPACITOR START DUAL VOLTAGE
230/115, SINGLE PHASE.
To be able to install and operate the CAPACITOR START DUAL VOLTAGE
230/115, SINGLE PHASE.
Materials:
Variac
CAPACITOR START DUAL VOLTAGE 230/115, SINGLE PHASEElectrolytic capacitors
Connecting wires
Clamp Ammeter
Multi-tester
Tachometer
Diagram.
SW
Electrolytic Capacitor
C.S.
RW1
RW2
CAPACITOR START DUAL VOLTAGE 230/115, SINGLE PHASEHIGH VOLTAGE CONNECTION
FORWARD
Procedure:
Determine the parts of the CAPACITOR START DUAL VOLTAGE 230/115,
SINGLE PHASE.
Measure the different resistances of the motor using the ohmmeter.
Record on the Table 1.
Determine the revolution of the motor using the tachometer.
Determine the name plate data on the motor.
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Table 1:
Running winding
resistance, RW1
Revolution per
minute, RPM
Total resistance, Rt Supply Voltage
Starting Current Current
Running Current Power
Poles
Centrifugal Switch
resistance C.S.
Running winding
Resistance, RW2
Computations:
Show your formula and solution
Using the values for table 1 determine your frequency and power.
Observations:
Conclusion:
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Experiment No. 8
Capacitor-Start Dual Voltage 230/115 Single Phase
High Voltage Connection
Reverse
Objectives:
To be able to familiarize the parts of a Capacitor-Start Dual Voltage 230/115 Single
phase .
To be able to install and operate the Capacitor-Start Dual Voltage 230/115 Single
Phase.
Materials:
Variac
CAPACITOR START DUAL VOLTAGE 230/115, SINGLE PHASE
Electrolytic capacitorsConnecting wires
Clamp Ammeter
Multi-tester
Tachometer
Diagram.
SW
Electrolytic Capacitor
C.S.
RW1
RW2
Capacitor-Start Dual Voltage 230/115 Single Phase
High Voltage Connection
Reverse
Procedure:
Determine the parts of the CAPACITOR START DUAL VOLTAGE 230/115,SINGLE PHASE.
Measure the different resistances of the motor using the ohmmeter.
Record on the Table 1.
Determine the revolution of the motor using the tachometer.
Determine the name plate data on the motor.
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Table 1:
Running winding
resistance, RW1
Revolution per
minute, RPM
Total resistance, Rt Supply Voltage
Starting Current Current
Running Current Power
Poles
Centrifugal Switch
resistance C.S.
Running winding
Resistance, RW2
Starting winding
resistance, S.W.
Computations:Show your formula and solution
Using the values for table 1 determine your frequency and power:
Observations:
Conclusion:
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Experiment No. 9
Capacitor-Start Dual voltage 230/115, single phase
Low Voltage Connection
Forward
Objectives:
To be able to familiarize the parts of a Capacitor-Start Dual voltage 230/115, single
phase.
To be able to install and operate the Capacitor-Start Dual voltage 230/115, single
phase.
Materials:
Variac
Capacitor-Start Dual voltage 230/115, single phaseElectrolytic capacitors
Connecting wires
Clamp Ammeter
Multi-tester
Tachometer
Diagram.
SW
Electrolytic Capacitor
C.S.
RW1
RW2
8
7
5
Capacitor-Start Dual voltage 230/115, single phaseLow Voltage Connection
Forward
Procedure:
Determine the parts of the Capacitor-Start Dual voltage 230/115, single phase.
Measure the different resistances of the motor using the ohmmeter.
Record on the Table 1.Determine the revolution of the motor using the tachometer.
Determine the name plate data on the motor.
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Table 1:
Running winding
resistance, RW1
Revolution per
minute, RPMTotal resistance, Rt
Starting Current Current
Running Current Power
Poles Supply Voltage
Centrifugal Switch
resistance C.S.
Running winding
Resistance, RW2
Computations:Show your formula and solution
Using the values for table 1 determine your frequency and power:
Question
What are the difference between high voltage and low voltage connections?
Observations:
Conclusion:
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Experiment No. 10
Capacitor-Start Dual voltage 230/115, single phase
Low Voltage Connection
Reverse
Objectives:
To be able to familiarize the parts of a Capacitor-Start Dual voltage 230/115, single
phase.
To be able to install and operate the Capacitor-Start Dual voltage 230/115, single
phase.
Materials:
Variac
Capacitor-Start Dual voltage 230/115, single phase.Electrolytic capacitors
Connecting wires
Clamp Ammeter
Multi-tester
Tachometer
Diagram.
SW
Electrolytic Capacitor
C.S.
RW1
RW2
Capacitor-Start Dual voltage 230/115, single phase
Low Voltage Connection
Reverse
Procedure:
Determine the parts of the Capacitor-Start Dual voltage 230/115, single phase.
Measure the different resistances of the motor using the ohmmeter.Record on the Table 1.
Determine the revolution of the motor using the tachometer.
Determine the name plate data on the motor.
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Table 1:
Running winding
resistance, RW1
Revolution per
minute, RPM
Total resistance, Rt Supply Voltage
Starting Current Current
Running Current Power
Poles Supply Voltage
Centrifugal Switch
resistance C.S.
Running winding
Resistance, RW2
Computations:
Show your formula and solution
Using the values for Table 1 determine your frequency and power:
Observations:
Conclusion:
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Experiment No. 11
Three Phase Squirrel cage Induction Motor
Objectives:
To be able to familiarize the parts of Three Phase Squirrel cage Induction Motor.To obtain the performance characteristics of a three-phase squirrel cage induction
motor.
DISCUSSION
Three-phase induction motors are by far the most widely used in industry. They
constitute about 80% of the total number of motors used in industry. Three-phase
induction motors are popular because they are more economical, last longer, and
require
less maintenance than other types of motors. The stator is composed of laminations
of
high-grade sheet steel. A three-phase winding is put in slots cut on the inner surface
ofthe stator frame. The stator windings can be either star (wye) - or delta-connected.
The
simplest and most widely-used rotor for induction motors is the squirrel cage rotor.
A
squirrel cage rotor consists of bare aluminum bars that are connected at their
terminals to
shorted end rings. The rotor bars are not parallel to the rotor axis but are set at a
slight
skew. This reduces mechanical vibrations, so the motor is less noisy.
Materials:
AC Ammeter
AC voltmeter
Connecting wires
Dynamometer
Fuses
Squirrel Cage Induction motor
3 Phase Supply
Switches
Tachometer
Wattmeter, 1 phase
Diagram.
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Wye Connection
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Procedure:
Determine the parts of the six terminal leads 380/230 V, three phase motor.Measure the different resistances of the motor using the ohmmeter.
Record on the Table 1.
Determine the revolution of the motor using the tachometer.
Determine the name plate data on the motor.
Table 1:
Individual resistance, Revolution per
minute, RPM
Total resistance, Rt Supply Voltage
Phase Voltage Current
Line Voltage Power
Line Current Poles
Computations:
Show your formula and solutionUsing the values for Table 1 determine your frequency and power:
Question:
What are the difference between three phase motors and single phase motors?
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Observation:
Conclusion:
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Experiment No. 12
Connecting nine terminal leads 460/230 V, three phase motor
High Voltage Connection
Delta
Objectives:
To be able to familiarize the parts of a nine terminal leads 460/230 V, three phase
motor..
To be able to install and operate the nine terminal leads 460/230 V, three phase
motor.
Materials:
Nine terminal leads 460/230 V, three phase motorElectrolytic capacitors
Connecting wires
Clamp Ammeter
Multi-tester
Tachometer
Diagram.
Nine terminal leads 460/230 V, three phase motor
High Voltage Connection
Delta
Procedure:
Determine the parts of the nine terminal leads 460/230 V, three phase motor.
Measure the different resistances of the motor using the ohmmeter.Record on the Table 1.
Determine the revolution of the motor using the tachometer.
Determine the name plate data on the motor.
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Table 1:
Individual resistance, Revolution per
minute, RPMTotal resistance, Rt Supply Voltage
Phase Voltage Current
Line Voltage Power
Line Current
Computations:
Show your formula and solution
Using the values for Table 1 determine your frequency and power:
Question:
What is the difference between 6 terminal and nine terminal leads motor?
Observation:
Conclusion:
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Experiment No. 13
Connecting nine terminal 460/230 V, three phase motor
Series Wye
STARObjectives:
To be able to familiarize the parts of a nine terminal 460/230 V, three phase motor.
To be able to install and operate the nine terminal 460/230 V, three phase motor.
Materials:
Nine terminal 460/230 V, three phase motor
Connecting wires
Clamp Ammeter
Multi-testerTachometer
Diagram.
1211
Nine terminal 460/230 V, three phase motor
Series Wye
STAR
Procedure:
Determine the parts of the nine terminal 460/230 V, three phase motor.
Measure the different resistances of the motor using the ohmmeter.
Record on the Table 1.
Determine the revolution of the motor using the tachometer.
Determine the name plate data on the motor.
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Table 1:
Individual resistance, Revolution per
minute, RPM
Total resistance, Rt Supply Voltage
Phase Voltage Current
Line Voltage Power
Line Current
Computations:
Show your formula and solution
Using the values for Table 1 determine your frequency and power:
Observation:
Conclusion:
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Experiment No. 14Load characteristics
of Series, Shunt and Compound motors
Objectives:
To be able to connect a series, shunt and compound motors in a controlled setting,
observe what will happen with no load.To be able to observe the differences between
the types of motors.Describe characteristics of the three types of DC motors: shunt,series and compound
Materials:
DC Power supply
DC series motor
DC shunt motor
DC compound motor
Connecting wires
Fuses
Series field rheostat
Shunt field rheostat
Switches
TachometerMultitester
Diagram
Figure 13. DC Series Motor: Schematic and Wiring Diagram
Figure 14. DC Shunt Motor: Schematic and Wiring Diagram
Figure 15. DC Compound Motor: Schematic and Wiring Diagram
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Procedure:
Connect the motor to the tachometer.
Observe the difference between the three motors having the same supply voltage.
Determine the revolution of the motor using the tachometer.
Table 1:Motors SUPPLY
VOLTAGE
LOAD
RESISTANCE
RPM
Series Motor
Shunt Motor
Compound Motor
Motors SUPPLY
VOLTAGE
LOAD
RESISTANCE
RPM
Series Motor
Shunt Motor
Compound Motor
Motors SUPPLY
VOLTAGE
LOAD
RESISTANCE
RPM
Series Motor
Shunt Motor
Compound Motor
Computations:
Show your formula and solution
Using the values for table 1 determine your frequency and power:
Question:What are the behavior of a series motor under load?
What are the behavior of a shunt motor under load?
What are the behavior of a compound motor under load?
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Observations:
Conclusions:
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Table 1:
Field resistance Revolution per
minute, RPMArmature resistance Supply Voltage
Output voltage Output Current
Supply Current Power
Computations:
Show your formula and solution
Using the values for Table 1 determine your frequency and power:
Question:
What determines the speed of a DC generator?
What is the difference between AC and DC generator?
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Observations:
Conclusions:
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Experiment No. 16Parallel operation of separately excited generators
Objectives:
To be able to familiarize the parts of a separately excited generators.
To be able to examine a separately excited generators and observe how it works.
To be able to identify the different windings.
Materials:
DC Generator
DC milliammeter
DC generator with shunt windings
FusesLamp loads
Connecting wires
Clamp Ammeter
HV DC VOLTAGE supply
Multi-tester
Tachometer
Switches
Diagram
Separately excited Generator
Procedure:
Determine the parts of the Separately excited Generator
Measure the different resistances of the Separately excited Generators armature
and field windings using the ohmmeter.
Record on the Table 1.
Determine the output voltageusing the multitester.
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Table 1:
Field resistance Revolution per
minute, RPM
Armature resistance Supply Voltage
Output voltage Output Current
Supply Current Power
Computations:
Show your formula and solution
Using the values for table 1 determine your frequency and power:
Question:
What determines the speed of a separately excited generator?
Observations:
Conclusions:
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Experiment No. 17
Synchronous Motor
Objectives:
To be able to familiarize the parts of a Induction Motor.
To be able to install and operate the Induction Motor.
Materials:
Variac
Synchronous Motor
Electrolytic capacitors
Connecting wires
Clamp Ammeter
Multi-testerTachometer
Fuses
Switches
Tachometer
Wattmeter, single phase
Diagram.
Synchronous Motor
Procedure:
Determine the parts of the Induction Motor.
Measure the different resistances of the motor using the ohmmeter.Record on the Table 1.
Determine the revolution of the motor using the tachometer.
Determine the name plate data on the motor.
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Table 1:
Field resistance Revolution per
minute, RPMArmature resistance Supply Voltage
Output voltage Output Current
Supply Current Power
Computations:
Show your formula and solution
Using the values for Table 1 determine your frequency and power:
QUESTION:
What is the advantage of Synchronous motors?
What is the difference between synchronous and asynchronous motors?
Types of Synchronous motors?
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Observations:
Conclusions:
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