#Question 43) Magnetic blowout coils are generally used in (A) #Vacuum circuit breaker (B) #Air b

#Question 43) Magnetic blowout coils are generally used in

(A) #Vacuum circuit breaker

(B) #Air blast circuit breaker

(C) #SF6 circuit breaker

(D) #Oil circuit breaker

Correct answer (B)

Magnetic blowout coils are used in the air blast circuit breaker. A blowout coil is a safety

device used to suppress electric arcs created in the air gap between contacts when switching

very high currents. Magnetic blowout coils overcome this condition by providing

a magnetic field that pushes the arc away from the contact field.

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