The best choice to shut down a dc power supply in case of an abnormally high voltage condition is an)
A) diac.
B) PUT.
C) triac.
D) SCR.
E) UJT.
Correct Answer:
Verified
Q14: The diac is equivalent to
A)two triacs in
Q15: The trigger voltage of an SCR is
Q16: A UJT has
A)one emitter lead.
B)two base leads.
C)two
Q17: A device is needed to trigger an
Q18: A silicon- controlled switch
A)has two gate leads.
B)has
Q20: The diac is an)
A)unidirectional device.
B)transistor.
C)bidirectional device.
D)three- layer
Q21: The voltage across a conducting SCR
A)equals the
Q22: A good choice to trigger a triac
Q23: Of the following applications, the likely one
Q24: The only way to stop an SCR
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