PRE – LAB HOMEWORK
FOUR SEMESTER
ELECTRICAL ENGINEERING
ELECTRICAL MACHINES
Engr. MUHAMMAD IDREES
ELECTRICAL MACHINES LAB
DEPARTMENT OF ELECTRICAL ENGINEERING
Federal Urdu University of Arts, Science & Technology
PRE-LAB HOMEWORK
Lab No. 2
LOAD CHARACTERISTICS OF A DC SHUNT MOTOR
What is Dc Shunt Motor?
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Write Dc Shunt Motor Formulas?
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Describe Motor Load?
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Describe CEMF?
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PRE-LAB HOMEWORK
Lab No. 3
LOAD CHARACTERISTICS OF A DC SERIES MOTOR
What is Dc Series Motor?
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Write Dc Series Motor Formulas?
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Describe Motor Load?
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Describe Motor Speed?
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PRE-LAB HOMEWORK
Lab No. 4
EFFICIENCY AND LOSSES OF A DC MOTOR
What is Input Power of a DC Motor?
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What is Output Power of a DC Motor?
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Describe the Losses of a Dc motor?
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What is the Efficiency of a DC Motor?
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PRE-LAB HOMEWORK
Lab No. 5
MOTOR SPEED AND COUNTER EMF
Describe Motor Speed?
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Describe CEMF?
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How increase DC Shunt Motor Speed?
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How increase DC Series Motor Speed?
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PRE-LAB HOMEWORK
Lab No. 6
LOAD CHARACTERISTICS OF DC COMPOUND GENERATOR
What is a Generator?
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What is a DC Compound Generator?
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Write the Formulas of a DC Generator?
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Describe Generator Load?
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PRE-LAB HOMEWORK
Lab No. 7
COPARISON BETWEEN A CUMULATIVE GENERATOR AND A DIFFERENTIAL GENERATOR
What is Difference between Cumulative and Differential Generator?
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PRE-LAB HOMEWORK
Lab No. 8
SPEED AND OUTPUT CHARACTERISTICS OF A COMPOUND GENERATOR
What are output characteristics of a compound Generator?
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PRE-LAB HOMEWORK
Lab No. 9
EFFICIENCY AND LOSSES OF A COMPOUND GENERATOR
What is efficiency of compound generator?
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Efficiency Formulas?
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Describe losses of a DC generator?
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PRE-LAB HOMEWORK
Lab No. 10
DISECTION OF MACHINES
(Multifunction Electrical Machines Model A4300)
Describe the various parts of motor?
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Describe the various parts of generator?
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Describe the various parts of commutator?
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PRE-LAB HOMEWORK
Lab No. 11
OPERATION OF MACHINES (Multifunction Electrical Machines Model A4300)
Describe the operation of motor?
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Describe the operation of generator?
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PRE-LAB HOMEWORK
Lab No. 13
DELTA –Y CONNECTIONS OF A TRANSFORMER
Describe Delta connection of a transformer?
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Describe Y connection of a transformer?
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Describe Delta connection of a transformer?
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PRE-LAB HOMEWORK
Lab No. 14
MOTOR SPEED & INPUT CHARACTERISTICS
How can affect input to motor speed?
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How can affect motor speed?
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What are input characteristics of a motor?
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PRE-LAB HOMEWORK
Lab No. 16
CLOSE LOOP MOTOR SPEED CONTROL TECHNIQUE
Define feedback?
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What is difference between close loop and open loop circuit?
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How we can control motor speed by control system?
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