G Pulla Reddy Engineering College
Electrical Machines – Virtual Laboratory
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Hopkinson's Test - Simulation
Back-to-Back Test on DC Machines
Control Parameters
Supply Voltage (V):
Supply Current (I) in Amps:
Motor Current (I
m
) in Amps:
Generator Current (I
g
) in Amps:
Calculate Results
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Calculated Results
Total losses in both machines:
770.00 W
Motor Efficiency (?
m
):
82.50 %
Generator Efficiency (?
g
):
84.44 %
Status:
System Ready
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Efficiency Characteristics & Observation Table
Observation Table
S.No
Voltage (V)
Motor I (A)
Gen I (A)
Motor ? (%)
Gen ? (%)
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