Engine : Electricity - 593/1386
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| A simple, untapped, single-phase 480/120 VAC step-down control transformer is rated at 600VA at 60 Hz. Neglecting power factor, what is the rated secondary load current? |
| A) 1.25 amperes |
| B) 4 amperes |
| C) 5 amperes |
| D) 10 amperes |
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| Is there a formula for this? |
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| P = IV, solve for I initial (600/480) = 1.25A 480/120 VAC --> 4 to 1 step down transformer --> 1.25A *4 = 5A |