The correct alternative is "c) II and IV are correct." The main differences between non-capacitive and capacitive bushings are that non-capacitive bushings are mainly used in low and medium voltage equipment, while capacitive bushings are used in high voltage applications. The construction process of capacitive bushings is more complex than that of non-capacitive bushings. Capacitive bushings have a more uniform electric field distribution than non-capacitive bushings. Capacitive bushings do not require a test tap for electrical measurements.
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