Electronics-Thyristors and Tranducers
Electronics-Thyristors and Tranducers
11. Once a DIAC is conducting, the only way to turn it off is with:
- a positive gate voltage
- a negative gate voltage
- low-current dropout
- breakover
12. The DIAC is a:
- transistor
- unidirectional device
- three-layer device
- bidirectional device
13. What type of application would use an injection laser diode?
- a 10BASE-T Ethernet
- a liquid crystal display
- a fiber optic transmission line
- a good flashlight
14. The PUT (programmable unijunction transistor) is actually a type of:
- UJT thyristor
- FET device
- TRIAC
- SCR
15. A transducer's function is to:
- transmit electrical energy
- convert energy
- produce mechanical energy
- prevent current flow
16. The primary function of the bias circuit is to
- hold the circuit stable at VCC
- hold the circuit stable at vin
- ensure proper gain is achieved
- hold the circuit stable at the designed Q-point
17. A JFET
- is a current-controlled device
- has a low input resistance
- is a voltage-controlled device
- is always forward-biased
18. The capacitor that produces an ac ground is called a(n)
- coupling capacitor
- dc open
- bypass capacitor
- ac open
19. In a class B push-pull amplifier, the transistors are biased slightly above cutoff to avoid
- crossover distortion
- unusually high efficiency
- negative feedback
- a low input impedance
20. The depletion-mode MOSFET
- can operate with only positive gate voltages
- can operate with only negative gate voltages
- cannot operate in the ohmic region
- can operate with positive as well as negative gate voltages