Electrical Engineering Mcqs

An isolator is installed_____________?
  • (A)  to operate the relay of circuit breaker
  • (B)  as a substitute for circuit breaker
  • (C)  always independent of the position of circuit breaker
  • (D)  generally on both sides of a circuit breaker
Hysteresis is desirable in Schmitt-trigger, because______________?
  • (A)  Energy is to be stored/discharged in parasitic capacitances
  • (B)  Effects of temperature would be compensated
  • (C)  Devices in the circuit should be allowed time for saturation and desaturation
  • (D)  It would prevent noise from causing false triggering