Quiz  /  Solid State Switching Circuits Gate & PSU MCQ Questions With...

  • 1. 
    A phototransistor produces more current than a photodiode because - (Choose an answer to complete this sentence)

  • the phototransistor can be more heavily doped than the photodiode.
  • the photo transistor accepts a wider spectrum of light than the photodiode.
  • the current produced by photons is amplified by the hfe (gain) of the transistor.
  • the photodiode is normally used in low light conditions.

  • 2. 
    What is the purpose of Optocoupler shown in the pic

  • to isolate 2 circuits on both end and transfer signal through light
  • to provide amplification of signal
  • to change the output
  • to isolate 2 circuits on both end and transfer signal through dc voltage

  • 3. 
    What do you mean by Solid State Relay (SSR)?

  • electronic switching device
  • complete state
  • motion
  • none of the above

  • 4. 
    Electromechanical relays face high arching problems as it has moving parts

  • True
  • False

  • 5. 
    The switch that has the fastest speed of operation is ………….. switch

  • mechanical
  • electronic
  • electromechanical
  • none of the above

  • 6. 
    Solid state relays face high arching problems as it has moving parts

  • True
  • False

  • 7. 
    The disadvantage/s of a mechanical switch is that it………….

  • is noisy
  • has moving parts
  • has high inertia/slow
  • All of the above

  • 8. 
    An LED and phototransistor is equivalent to a/an

  • Thermocouple
  • FET
  • Optocoupler
  • Regulator

  • 9. 
    If you need to switch very small load currents or high frequency signals such as audio or video signals, which type of relay will you choose

  • Electromechanical Relay
  • Solid State Relay

  • 10. 
    Identify the device

  • Opto- isolator
  • Electromechanical Relay
  • Solid State Relay
  • Photo Transistor

  • 11. 
    Optocoupler is otherwise known as

  • Laser
  • Photodiodes
  • Opto- isolator
  • Photoconductive cell

  • 12. 
    Solid State Relays (SSRs) have a

  • coil and contact arrangement
  • optocoupler
  • SCR
  • none of the above

  • 13. 
    Identify the device highlighted.

  • Diode
  • Photodiode
  • Photo transistor
  • Optocoupler

  • 14. 
    If you need faster response and long life, which type of relay will you choose

  • Electromechanical Relay
  • Solid State Relay

  • 15. 
    Solid state relays have only one moving part which helps in switching between “ON” and “OFF” position.

  • True
  • False

  • 16. 
    Electromechanical Relays have a

  • coil and contact arrangement
  • optocoupler
  • SCR
  • none of the above

  • 17. 
    A relay is a/an ……….. switch

  • mechanical
  • electronic
  • electromechanical
  • none of the above
Report Question
warning
access_time
  Time