HV Exit Exam • Set 7 Question 21 of 30
If the minimum arcing voltage for platinum is 16 V, it can be concluded that at system voltages below 16 V:
✓
Direct Answer
Option C: Circuit current can be interrupted without sustaining an electric arc
The minimum arcing voltage is the threshold below which an electric arc cannot initiate or be sustained in the contact gap, permitting arcless interruption.
All Options
A
It will be impossible to interrupt the circuit
B
It will be impossible to conduct current
C
Circuit current can be interrupted without sustaining an electric arc
(Correct Answer)
D
Contacts will weld together upon opening
Detailed Explanation & Context
The minimum arcing voltage is the threshold below which an electric arc cannot initiate or be sustained in the contact gap, permitting arcless interruption.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • High Voltage Safety Officer & Switchgear Operations (HV).
Advertisement
Practice Full HV Set 7
Test yourself with 30 interactive questions, live timer, and instant score.