HV Exit Exam • Set 5 Question 18 of 30

High vacuum is utilized as an electrical insulating medium in all of the following applications EXCEPT:

✓

Direct Answer

Option B: Low-voltage domestic appliance cords

Vacuum insulation requires sealed, rigid evacuated vessels (used in vacuum circuit breakers, X-ray tubes, particle accelerators), and is not applicable to domestic appliance flexible cords.

All Options

Particle accelerators

Low-voltage domestic appliance cords (Correct Answer)

Field emission and electron tubes

X-ray tubes and vacuum interrupters

Detailed Explanation & Context

Vacuum insulation requires sealed, rigid evacuated vessels (used in vacuum circuit breakers, X-ray tubes, particle accelerators), and is not applicable to domestic appliance flexible cords.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • High Voltage Safety Officer & Switchgear Operations (HV).

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