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topic/Transformers

Question NoTitleTypeMarks
1069.When doesmaximum power transferhappen from the source to the load?
MCQ
5
1070.A transformer is plugged into a 120 V rms source and has a primary current of 300 mA rms. The secondary is providing 18 V across a 10load. What is the efficiency of the transformer?
MCQ
5
1071.The coefficient of coupling between two coils is 0.45. The first coil has an inductance of 75 mH and the second coil has an inductance of 105 mH. What is the mutual inductance between the coils?
MCQ
5
1072.Increasing the number of turns of wire on the secondary of a transformer will
MCQ
5
1073.What is the turns ratio of the transformer needed to match a 1 ksource resistance to a 160load?
MCQ
5