Ewrb - Study guides, Class notes & Summaries

EWRB Exam Questions with CORRECT ANSWERS

EWRB Theory Exam Questions with Complete Solutions

EWRB theory prep – MCBs Exam Questions with Complete Solutions

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...

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...

EWRB theory prep - MCBs WITH 100- CORRECT ANSWERS

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...

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

EWRB theory prep – MCBs EXAM well updated 2024 with questions and correct answers circuit breaker purpose - CORRECT ANSWERdetect SC/OL and break contact on fault detection at short circuit, PSCC fault occurs, what operating mechanism is used - CORRECT ANSWERmagnetic field two operating mech. of MCB is - CORRECT ANSWERmagnetic and thermal bedroom lighting MCB - CORRECT ANSWER16C for bedroom lighting powerpoints MCB - CORRECT ANSWER32/20C for powerpoints and appliances, e.g....