How is the initiation of electric arc at the instant of contact separation caused?

Related MCQs

• The transient voltages that appears across the contacts at the instant of arc extinction is called ..............voltage
• By using low resistance method for arc extension what is the value of arc resistance?
• The resistance of an electric arc can be increased by
• The heat produced at the contact point owing to flow of electric current is least affected by_____________________.
• The interrupting time of a circuit breaker is the period between the instant of _________.
• Which of the following medium is employed for extinction of arc in air circuit breaker ?
• Arc in a circuit behaves as
• The arc voltage produced in A.C. circuit breaker is always
• Arc in a circuit breaker is interrupted at
• The stability of arc in vacuum depends on _________.