BTEB SSC Vocational Practice Questions - Bangladesh Technical Education Board Secondary School Certificate (SSC) Vocational Examination Exam

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What is the primary safety function of connecting equipment earthing (grounding) to the metallic frame of domestic and workshop appliances?

To increase the operational speed and electrical power of the appliance To step down the incoming mains voltage from 220 V to 12 V To convert alternating current (AC) into direct current (DC) for internal circuits To provide a low-resistance return path to ground that triggers protective circuit breakers during insulation faults

Correct Answer:

To provide a low-resistance return path to ground that triggers protective circuit breakers during insulation faults

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