HV Exit Exam • Set 6 Question 30 of 30
In a circuit breaker, the magnitude of the active recovery voltage depends upon:
✓
Direct Answer
Option D: All of the above
Active recovery voltage is governed by the system power factor (higher at zero power factor lagging), generator armature reaction, and whether the system neutral is solidly grounded or isolated.
All Options
A
System power factor (cosφ)
B
Armature reaction of the supplying generators
C
Circuit configuration and earthing conditions
D
All of the above
(Correct Answer)
Detailed Explanation & Context
Active recovery voltage is governed by the system power factor (higher at zero power factor lagging), generator armature reaction, and whether the system neutral is solidly grounded or isolated.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • High Voltage Safety Officer & Switchgear Operations (HV).
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