Deck 52: The Triac

Question 1

When a triac is connected in an AC circuit, the output voltage is alternating current.

Answer 1

True

Question 2

The resistance can be adjusted to permit the triac to fire when the AC waveform reaches its peak value. This will cause one-____ of the AC voltage to be dropped across the triac.

A) fifth
B) fourth
C) third
D) half

Answer 2

D

Question 3

The triac is a PNPN junction connected parallel to a(n) ____________________ junction.

Answer 3

NPNP

Question 4

The triac operates in a manner similar to that of two connected ____.

A) SCRs
B) resistors
C) ICs
D) capacitors

Question 5

The triac is a member of the thyristor family, which means that it has only two states of operation, on and off.

Question 6

Why is the triac popular in industrial circuits?

Question 7

To obtain complete voltage control, the triac, like the SCR, must be ____________________.

Question 8

Describe how a triac can be tested.