Industrial Electronics

11. A transduction principle used primarily in optical sensors.

  1. Photoconductive transduction
  2. Photovoltaic transduction
  3. Electromagnetic transduction
  4. Piezoelectric transduction

Correct answer: (B)
Photovoltaic transduction

12. A triac can pass a portion of _________ half cycle through the load

  1. only positive
  2. only negative
  3. both positive and negative
  4. neither positive nor negative

Correct answer: (C)
both positive and negative

13. A triac is a _________ switch.

  1. unidirectional
  2. mechanical
  3. bidirectional
  4. omnidirectional

Correct answer: (C)
bidirectional

14. A triac is equivalent to two SCRs

  1. in parallel
  2. in inverse-parallel
  3. in series
  4. in inverse-series

Correct answer: (B)
in inverse-parallel

15. A UJT is sometimes called a _________ diode.

  1. double-based
  2. single-based
  3. a rectifier
  4. a switching diode

Correct answer: (A)
double-based

16. AC power in a load can be controlled by connecting

  1. two SCRs in series
  2. two SCRs in parallel
  3. two SCRs in parallel opposition
  4. two SCRs in series opposition

Correct answer: (C)
two SCRs in parallel opposition

17. Acceleration transducers are also called

  1. gyros
  2. force transducers
  3. tachometers
  4. accelerometers

Correct answer: (D)
accelerometers

18. An effect that reduces the possibility of accidental triggering of the SCS.

  1. Miller effect
  2. Rate effect
  3. End effect
  4. Flywheel effect

Correct answer: (B)
Rate effect

19. An SCR combines the feature of

  1. a rectifier and resistance
  2. a rectifier and capacitor
  3. a rectifier and transistor
  4. a rectifier and inductor

Correct answer: (C)
a rectifier and transistor

20. An SCR is a _________ triggered device.

  1. current
  2. power
  3. voltage
  4. noise

Correct answer: (A)
current

Previous
Page 2 of 10
Next
Copyright © EngineeringMCQ.com