logo

CuriousTab




Buy on Amazon
Thyristors and Tranducers (Electronics) Question and Answers-Page first

Thyristors and Tranducers problems


Share: 
  • 1. Once a DIAC is conducting, the only way to turn it off is with:

  • Options
  • A. a positive gate voltage
  • B. a negative gate voltage
  • C. low-current dropout
  • D. breakover

  •           Discuss     

  • 2. What does a hall effect sensor sense?

  • Options
  • A. temperature
  • B. moisture
  • C. magnetic fields
  • D. pressure

  •           Discuss     

  • 3. The only way to close an SCR is with:

  • Options
  • A. a trigger input applied to the gate
  • B. forward breakover voltage
  • C. low-current dropout
  • D. valley voltage

  •           Discuss     

  • 4. What type of application would use a photovoltaic cell?

  • Options
  • A. an automobile horn
  • B. a TI 92 calculator
  • C. a magnetic field detector
  • D. a remote power source

  •           Discuss     

  • 5. The DIAC is a:

  • Options
  • A. transistor
  • B. unidirectional device
  • C. three-layer device
  • D. bidirectional device

  •           Discuss     

  • 6. When checking a good SCR or TRIAC with an ohmmeter it will:

  • Options
  • A. show high resistance in both directions
  • B. show low resistance with positive on anode and negative on cathode, and high resistance when reversed
  • C. show high resistance with negative on anode and positive on cathode, and low resistance when reversed
  • D. show low resistance in both directions

  •           Discuss     

  • 7. Which is the seven-segment display?

  • Options
  • A.
  • B.
  • C.
  • D.

  •           Discuss     

  • 8. What is an SCR?

  • Options
  • A. a PNPN thyristor with 3 terminals
  • B. a PNPN thyristor with 4 terminals
  • C. a PNP thyristor with 3 terminals
  • D. an NPN thyristor with 3 terminals

  •           Discuss     

  • 9. Which is the DIAC?

  • Options
  • A.
  • B.
  • C.
  • D.

  •           Discuss     

  • 10. A TRIAC:

  • Options
  • A. can trigger only on positive gate voltages
  • B. can trigger only on negative gate voltages
  • C. cannot be triggered with gate voltages
  • D. can be triggered by either a positive or a negative gate voltage

  •           Discuss     


First 2 3 4