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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
An ideal OP-AMP is an ideal__________?
  • (A)  Current controlled Current source
  • (B)  Current controlled Voltage source
  • (C)  Voltage controlled Voltage source
  • (D)  Voltage controlled Current source