When a BJT is biased in the cutoff region the collector-to-emitter voltage is typically equal to ____（）
A. the emitter voltage
B. 0.03V
C. the collector current times the collector resistor
D. the collector supply voltage
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β is the ratio of _____（）
A. collector current to emitter current
B. base current to collector current
C. collector current to base current
D. emitter current to collector current
Why is the arrow on the BJT schematic symbol important（）
A. It identifies the emitter terminal and the type of BJT
B. It identifies the collector terminal and the type of BJT
C. It identifies the base terminal and the type of BJT
D. None of the above
In a small-signal transistor, the typical range of the parameter α is _____（）
A. greater than 1
B. between 0 and 1
C. almost equal to 1 but always less than 1 （0.9 to 1.0）
D. almost equal to 1 but always greater than 1 （1.0 to 1.1）
Pentavalent atoms are often referred to as _____（）
A. donor atoms
B. minority carriers
C. acceptor atoms
D. majority carriers
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