thyristors-and-tranducers electronics question and answers -Page 3

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Thyristors and Tranducers problems

1. A TRIAC will control AC voltage during the positive half cycle only.
Options
A. True
B. False

Correct Answer: False

2. The DIAC conducts in only one direction when gated on.
Options
A. True
B. False

Correct Answer: False

3. A photodiode is a device that produces light.
Options
A. True
B. False

Correct Answer: False

4. A DIAC is a bidirectional diode that has a symmetrical switching mode.
Options
A. True
B. False

Correct Answer: True

5. The gate of a TRIAC can turn it on to have current flow in either direction.
Options
A. True
B. False

Correct Answer: True

6. A thermistor is a semiconductor device that acts like a piezoresistive resistor.
Options
A. True
B. False

Correct Answer: False

7. SCRs are four-layer devices that are either fully conducting or not conducting.
Options
A. True
B. False

Correct Answer: True

8. A silicon-controlled rectifier (SCR) has 3 terminals labeled base, collector, and emitter.
Options
A. True
B. False

Correct Answer: False

9. To turn an SCR off, simply remove the gate voltage.
Options
A. True
B. False

Correct Answer: False

10. The optically coupled isolator interrupter module is used to transfer switching information between two electrically isolated points.
Options
A. True
B. False

Correct Answer: False

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