Ewrb exam - Study guides, Class notes & Summaries

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EWRB (MCBs) EXAM THEARY STUDY GUIDE QUESTIONS AND ANSWERS.

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EWRB Theory Prep – MCBs Exam Questions And Answers types of MCB trips - ANS-thermal magnetic thermal tripping - ANS-bi-metal strip, used for overload currents protection magnetic tripping - ANS-magnetic inductor, used for short circuit protection reset procedure - ANS-reset to OFF reset to ON arc containment includes - ANS-horns carry current to chute, allow arc to jump out arc chute lengthens distance for arc to travel oil suppresses arc splitter plates split the arc arc...

EWRB (MCBs) EXAM THEARY STUDY GUIDE QUESTIONS AND ANSWERS. Question 1: A new flexible chord has been fitted, which of the following insolation resistance test values would be correct? A. 10 MOhm B. 0.5 Ohm C. 0.5 MOhm D. 1. Ohm - ANSWERS A. 10 MOhm Question 2: The maximum current a flexible cord can carry safely without overheating depends mainly on: A. The type of supply, a.c. or d.c. B. The cross-sectional area of the flexible cord conductors. C. The colours of the fl...

Electrical wiring EWRB Final Exam Questions and answers | 2024/25