The voltage appearing across the contacts after opening of the circuit breaker is called__________voltage

A. slow making and breaking of load circuit contacts
B. foreign matter on the contact surface
C. too low contact pressure
D. all of the above

A. power
B. current
C. voltage wave
D. all of the above

A. high temperature
B. increase of mean free path
C. increasing field strength
D. all of the above

A. short-circuit
B. temperature
C. overload
D. over voltage

A. current
B. voltage
C. VAR
D. kVA

A. Impedance
B. Reactance
C. Either of the above
D. None of the above