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  • If two resistors are placed in series, is the final resistance:
    A. Higher B. Lower C. The same D. Cannot be determined
  • This is a type of semiconductor in which the flow of current can be controlled through a base or gate terminal. It is usually used for electronic switching or amplifiers.
    A.    diode       B.    varistor         C.    resistor   D.   transistor
  • This is a type of display that uses tiny polarized crystals that align when currentis passed through them. Used in conjuction with a polarized lens they darkenwhen energized. They are very popular in watches, calculators, and lap-tops.
    A.    LCD     B.    CRT                      C.    LED       D. Quartz Crystal
  • What does the symbol stand for?
    A. diode B. potentiometer           C. amplifier D. OR gate
  • What does LED standfor?
         A.    Light Emitting Display     B.    Low Energy Display     C.    Light Emitting Diode D. Light Emitting Detector
  • This consists of two plates separated by a dielectric and can store a charge. Useful in tuning and filtering circuits, it blocks DC while passing AC.
    A.capacitor    B.transistor C.inductor      D.relay
  • This is a type of semiconductor that only allows current to flow in one direction. It is usually used to rectify AC signals (conversion to DC).
    A. diode           B.    transformer   C. resistor       D.   inductor
  • Connecting a lead from the negative to the positive of a battery will produce:
    A.    A high resistance circuit     B.    A short circuit               C.    A low current path D. An open circuit
  • What does the symbol stand for?
    A. photodiode            B. LED          C. LDR             D. phototransistor
  • What does the symbol stand for?
    A. fuse             B. potentiometer  C. variable resistor D. coil
  • Made from a variety of materials, such as carbon, this inhibits the flow of current.
    A.inductor      B.resistor C.capacitor    D.choke
  • What does the symbol stand for?
    A. transformer B. transistor C. thyristor D. relay
  • If a small value of capacitance is connected in parallel with a large value, the combined capacitance will be:
    A.  The sameB.  HigherC. Lower D. Cannot be determined
  • What does the symbol stand for?
    A. cell  B. AC power source           C. battery   D. capacitor
  • This consists of usually two coil windings which usually share a magnetic core. It is used to convert an AC source or signal into another AC source or signal with the same power (ideally) but different voltage and current.
    A. transistor     B. transformer   C. relay                D.choke
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