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1- Based on the exercise, what do you understood about residual magnetism?   2- What is the relationship between the generator’s excitation Current (If) and generator’s field flux ()?   3. How does the Generator’s Field Current (If) affect its Terminal Voltage(EG=VT) ?

1- Based on the exercise, what do you understood about residual magnetism?   2- What is the relationship between the generator’s excitation Current (If) and generator’s field flux ()?   3. How does the Generator’s Field Current (If) affect its Terminal Voltage(EG=VT) ?

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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 1- Based on the exercise, what do you understood about residual magnetism? 

 2- What is the relationship between the generator’s excitation Current (If) and generator’s field flux ()? 

 3. How does the Generator’s Field Current (If) affect its Terminal Voltage(EG=VT) ? 

MIEE 21IUN Eiectncal ieennosogy EACIUISE - Graph: Scale: X axis 1 unit - 2o mA Y axis 1 unit = 3 vets EG vets 210 180 150 120 30 Te ma Conclusions: 1. Based on the exercise, what do you understood about residual magnetism? 2. What is the relationship between the generator's excitation Current (1,) and generator's field flux (0)? 3. How does the Generator's Field Current (1,) affect its Terminal Voltage (E, = V, )?
Transcribed Image Text:MIEE 21IUN Eiectncal ieennosogy EACIUISE - Graph: Scale: X axis 1 unit - 2o mA Y axis 1 unit = 3 vets EG vets 210 180 150 120 30 Te ma Conclusions: 1. Based on the exercise, what do you understood about residual magnetism? 2. What is the relationship between the generator's excitation Current (1,) and generator's field flux (0)? 3. How does the Generator's Field Current (1,) affect its Terminal Voltage (E, = V, )?
MIEE 211ON Electrical Technokogy Exercise -5 MIEE 211ON Electrical Technlogy Exercise - 5 Procedure: 1. Make the connections as indicated in the circuit diagram. 2. Keep the voltage knob of the Variable DC Power Supply to the DC Shunt Motor in zero (0) condition, as indicated in Voltmeter I across the Motor Amature. The Motor Excitation Rheostat Aim: To obtain the Open Circuit Characteristics (OCC) of a Direct Current (DC) Generator. Apparatus required: should also be kept at minimum. 3. Switch "ON" the Main Supply. 4. Increase the Voltage of the Variable DC Supply of the Mechanical Power Supply Unit such that the Voltmeter 2 (Và reads 160V. SI. No Name of the Apparatus Specification / Range Quantity 5. Using a Digital Tachometer, increase the Voltage of the Variable DC Supply so that the Speed of the Generator reaches3000 RPM (Voltmeter I across the Motor Armature (En) will show 206V. 6. Excite the Generator Field by adjusting the Variable DC Power Supply and note the characteristics of the DC Shunt Generator across its Amature Circuit. 7. Take initial readings from the Ammeter (l) and Voltmeter 3 (Eo) across the Generator Amature. 8. Increase the excitation of the field by increasing the Voltage of the Variable DC Supply of the Generator (Eo) in increments up to its ated voltage 220v, Take note of each Generator Field Current (l) and obtain the corresponding Generator Terminal Voltage. 9. Plot the graph (for scale) Generator's Terminal Voltage (Ec) versus its Field Current (l). Observation: Generator Field Current (Ir in mA or A) Generator Termiaal Voltage (Ea or Vr in V) Trial No. Circuit Diagram: Initial 5.5 38 63 El 90 175 180 210 M 163 221,8 OE2 E? Pape 2 of4 Page 3 of 4 Univensity of Technokogy and Applied Sciences - IBRI University of Tochnology and Applied Seiences - IBRI S-0)
Transcribed Image Text:MIEE 211ON Electrical Technokogy Exercise -5 MIEE 211ON Electrical Technlogy Exercise - 5 Procedure: 1. Make the connections as indicated in the circuit diagram. 2. Keep the voltage knob of the Variable DC Power Supply to the DC Shunt Motor in zero (0) condition, as indicated in Voltmeter I across the Motor Amature. The Motor Excitation Rheostat Aim: To obtain the Open Circuit Characteristics (OCC) of a Direct Current (DC) Generator. Apparatus required: should also be kept at minimum. 3. Switch "ON" the Main Supply. 4. Increase the Voltage of the Variable DC Supply of the Mechanical Power Supply Unit such that the Voltmeter 2 (Và reads 160V. SI. No Name of the Apparatus Specification / Range Quantity 5. Using a Digital Tachometer, increase the Voltage of the Variable DC Supply so that the Speed of the Generator reaches3000 RPM (Voltmeter I across the Motor Armature (En) will show 206V. 6. Excite the Generator Field by adjusting the Variable DC Power Supply and note the characteristics of the DC Shunt Generator across its Amature Circuit. 7. Take initial readings from the Ammeter (l) and Voltmeter 3 (Eo) across the Generator Amature. 8. Increase the excitation of the field by increasing the Voltage of the Variable DC Supply of the Generator (Eo) in increments up to its ated voltage 220v, Take note of each Generator Field Current (l) and obtain the corresponding Generator Terminal Voltage. 9. Plot the graph (for scale) Generator's Terminal Voltage (Ec) versus its Field Current (l). Observation: Generator Field Current (Ir in mA or A) Generator Termiaal Voltage (Ea or Vr in V) Trial No. Circuit Diagram: Initial 5.5 38 63 El 90 175 180 210 M 163 221,8 OE2 E? Pape 2 of4 Page 3 of 4 Univensity of Technokogy and Applied Sciences - IBRI University of Tochnology and Applied Seiences - IBRI S-0)
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