Ewrb - Study guides, Class notes & Summaries
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EWRB theory prep – MCBs Exam Questions with Complete Solutions
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types of MCB trips - ANSWER thermal 
magnetic 
thermal tripping - ANSWER bi-metal strip, used for overload currents protection 
magnetic tripping - ANSWER magnetic inductor, used for short circuit protection 
reset procedure - ANSWER reset to OFF 
reset to ON
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EWRB Theory Exam Prep Questions with Complete Solutions
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EWRB Theory Exam Prep Questions with 
Complete Solutions
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EWRB Exam Questions with CORRECT ANSWERS
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EWRB Exam Questions with CORRECT ANSWERS
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EWRB Theory Exam Questions with Complete Solutions
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EWRB Theory Exam Questions with 
Complete Solutions
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EWRB theory prep – MCBs Exam Questions with Complete Solutions
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EWRB theory prep – MCBs Exam 
Questions with Complete Solutions
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ELECTRICAL THEORY PRACTICE TEST EXAM QUESTIONS AND ANSWERS WITH ACTUAL SOLUTIONS VERIFIED
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ELECTRICAL THEORY PRACTICE TEST EXAM QUESTIONS AND ANSWERS WITH ACTUAL SOLUTIONS VERIFIED 
Voltmeter 
A high resistance is connected in series with the internal coil of a galvanometer to make? 
If a transformer ratio is 20/1, what does it mean for the secondary? 
The primary voltage is 20 times greater than that of the secondary. 
If a motor enclosure is designed to contain sparks or flashes that could ignite surrounding vapors or gases, then the enclosure is considered to be which of the follow...
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EWRB THEORY EXAM PREP (2024) LATEST QUESTIONS & ANSWERS (GRADED A+)
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EWRB THEORY EXAM PREP (2024) LATEST QUESTIONS & ANSWERS (GRADED A+) 
types of MCB trips - correct answer>>>thermal 
magnetic 
 
thermal tripping - correct answer>>>bi-metal strip, used for overload currents protection 
 
magnetic tripping - correct answer>>>magnetic inductor, used for short circuit protection 
 
reset procedure - correct answer>>>reset to OFF 
reset to ON 
 
arc containment includes - correct answer>>>horns carry current to chute, all...
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EWRB theory prep - MCBs WITH 100- CORRECT ANSWERS
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EWRB theory prep - MCBs WITH 100- CORRECT ANSWERS
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EWRB Theory UPDATED Exam Questions and CORRECT Answers
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What is the minimum value of the permitted test result for the insulation resistance test of a 
three-phase, 400V, mains cable? - 1MΩ 
When carrying out testing on a low voltage electrical installation, which document details the 
tests and checks required to be carried out? - AS/NZS 3000 
What is the minimum or maximum test result value you would consider acceptable for an Earth 
Continuity test? - 1Ω or less 
State TWO types of electrical protection provided by a RCBO. - ANY TWO: 
- Earth...
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EWRB Theory Certification Exam Questions and CORRECT Answers
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What does BJT stand for? - Bipolar Junction Transistor 
What does the transducer do? - converts energy from one form to another 
State one factor that determines voltage drop - Length of cable 
State one reason why a class 1 electrical appliance is set at a maximum of 1 ohm - It 
prevents the touch voltages rising to dangerous levels
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