HV Exit Exam • Set 3 Question 15 of 30
Air blast circuit breakers are particularly preferred for applications requiring:
✓
Direct Answer
Option C: Repeated frequent duty
Because compressed air is continually replenished and leaves no chemical breakdown residues, air blast circuit breakers are well-suited for repeated duty and fast arc clearing.
All Options
A
Short duty only
B
Intermittent duty only
C
Repeated frequent duty
(Correct Answer)
D
DC traction sub-stations only
Detailed Explanation & Context
Because compressed air is continually replenished and leaves no chemical breakdown residues, air blast circuit breakers are well-suited for repeated duty and fast arc clearing.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • High Voltage Safety Officer & Switchgear Operations (HV).
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