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EWRB THEORY EXAM 2024/2025 WITH 100% ACCURATE SOLUTIONS
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EWRB THEORY EXAM 2024/2025 WITH 100% ACCURATE SOLUTIONS
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EWRB THEORY EXAM 2024/2025 WITH 100%ACCURATE SOLUTIONS
What is the minimum value of the permitted test result for the insulation
resistance test of a three-phase, 400V, mains cable? - Precise Answer
✔✔1MΩ
When carrying out testing on a low voltage electrical installation, which
document details the tests and checks required to be carried out? -
Precise Answer ✔✔AS/NZS 3000
What is the minimum or maximum test result value you would consider
acceptable for an Earth Continuity test? - Precise Answer ✔✔1Ω or less
State TWO types of electrical protection provided by a RCBO. - Precise
Answer ✔✔ANY TWO:
- Earth Leakage
- Overload
- Short Circuit
If the voltage and current are known, what TWO other factors are
required to calculate the power consumed by a three-phase motor? -
Precise Answer ✔✔√3 & Power Factor
, What type of single-phase motor can be reversed by reversing the
connections to the run winding? - Precise Answer ✔✔ANY ONE:
- Split-Phase Motor
- Capacitor Start Motor
- Cap-Start, Cap-Run Motor
What type of single-phase motor can be reversed by reversing the
connections to the armature brushes? - Precise Answer ✔✔ANY ONE:
- Universal Motor
- Series Motor
State ONE reason why the metal frame of a Class 1 electrical appliance
is earthed. - Precise Answer ✔✔ANY ONE:
- To ensure the operation of a protective device under fault conditions.
- To keep the frame of the appliance at earth potential under fault
conditions.
State TWO factors that determine the severity of electric shock upon the
human body. - Precise Answer ✔✔ANY TWO:
- Voltage Applied
- Shock Current Level
- Contact Duration
- Skin Dryness
- Current Path
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