Exercise: Thyristors

Questions for: Thyristors

The ________ can conduct current in either direction and is turned on when a breakover voltage is exceeded.
A:
SCR
B:
diac
C:
SCS
D:
triac
Answer: B
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The silicon-controlled switch (SCS) is similar in construction to the
A:
triac.
B:
diac.
C:
SCR.
D:
4-layer diode.
Answer: C
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Identify the symbol:
A:
SCS
B:
PUT
C:
LASCR
D:
diac
Answer: A
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An application of a(n) ________ is in a lighting system for power interruptions.
A:
SCR
B:
SCS
C:
diac
D:
triac
Answer: A
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You need a very efficient thyristor to control the speed of an AC fan motor. A good device to use would be
A:
a 4-layer diode.
B:
a PUT.
C:
a triac.
D:
a BJT.
Answer: C
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