Instrument transformers are used with instruments and relays to measure and control ac circuits.
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Q1: The primary and secondary coils of the
Q2: A nearly constant voltage can be maintained
Q3: What is the current that most series
Q4: Small and inexpensive devices are required to
Q6: The construction of the three-phase induction voltage
Q7: A(n) _ transformer has a sliding brush
Q8: List two typical uses of autotransformers.
Q9: Street lamp circuits may be connected in
Q10: Discuss limitations on autotransformers.
Q11: When the three-phase stationary primary windings are
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