Which of the following characteristics are similar between AC and DC power?
A. Voltage can be stepped up or down by a transformer.
B. Polarity is fixed.
C. Voltage varies during cycles.
D. Heating effect is the same.
A. Incorrect. Heating effect is the same in AC and DC power.
B. Incorrect. Heating effect is the same in AC and DC power.
C. Incorrect. Heating effect is the same in AC and DC power.
D. Correct. Heating effect is the same in AC and DC power.
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