Electronics - Thyristors and Tranducers

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Exercise : Thyristors and Tranducers - General Questions
1.
A TRIAC:
can trigger only on positive gate voltages
can trigger only on negative gate voltages
cannot be triggered with gate voltages
can be triggered by either a positive or a negative gate voltage
Answer: Option
Explanation:
No answer description is available. Let's discuss.

2.
When checking a good SCR or TRIAC with an ohmmeter it will:
show high resistance in both directions
show low resistance with positive on anode and negative on cathode, and high resistance when reversed
show high resistance with negative on anode and positive on cathode, and low resistance when reversed
show low resistance in both directions
Answer: Option
Explanation:
No answer description is available. Let's discuss.

3.
What does a hall effect sensor sense?
temperature
moisture
magnetic fields
pressure
Answer: Option
Explanation:
No answer description is available. Let's discuss.

4.
What causes the piezoelectric effect?
heat or dissimilar metals
pressure on a crystal
water running on iron
a magnetic field
Answer: Option
Explanation:
No answer description is available. Let's discuss.

5.
Which is the DIAC?
mca14_10012a1.gif
mca14_10012b1.gif
mca14_10012c1.gif
mca14_10012d1.gif
Answer: Option
Explanation:
No answer description is available. Let's discuss.