Physics · Electrical Machines
Which of the following is considered the main disadvantage of Hopkinson's test for determining the efficiency of a DC shunt machine?
- 1It can only be performed on a motor and not a generator.
- 2It requires full load power from the supply mains.
- 3It completely ignores the iron losses.
- 4It requires two identical shunt machines.✓
Correct answer
It requires two identical shunt machines.
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