UJTs, SCRs, diacs, and triacs belong to a family of devices known as ____.
A. FETs
B. thyristors
C. BJTs
D. ICs
Answer: B
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The primary winding of a 120 V transformer has 200 turns. The secondary winding has 20 turns. What is the secondary winding voltage?
A) 12 V B) 1,200 V C) 60 V D) 24 V
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The most common fan used for moving air through ductwork in residential air conditioning is:
A) Vane axial. B) Forward-curved centrifugal. C) Propeller. D) Backward-curved centrifugal.
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If you are under 21 years of age and your BAC measures 0.01% or higher on the breath test (PAS) you may be suspended for:
a. 18 months b. one year c. 180 days
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Which of the following is not a type of relay?
A. time-delay B. latching C. double-throw D. diffuse
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