Mathematics · Electric Heating
A three-phase electric furnace with a star-connected resistive load of 20 Ω per phase is connected to a 400 V line-to-line A.C. supply. What is the total heat generated by the furnace in 30 minutes?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 117.50 MJ
- 212.40 MJ
- 314.40 MJ✓
- 410.80 MJ
Correct answer
14.40 MJ
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