Digital Electronics - Signals and Switches
Exercise "I never see what has been done; I only see what remains to be done."
- Marie Curie
26.
If the input voltage on the base of the transistor in the given figure is changed to +10 V, what is the new voltage at the collector Vc ?
A. Not enough information is provided. B. Vc = 10 VC. Vc = 0 VD. Vc = 5 V
Answer: A
Explanation:
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27.
Is the transistor in the given figure considered ON or OFF?
A. OFF B. ON C. Not enough information is provided.
Answer: D
Explanation:
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28.
Normal operation of an NPN bipolar transistor requires the base to be ________ with respect to the emitter, and ________ with respect to the collector.
A. positive, negative B. positive, positive C. negative, positive D. negative, negative
Answer: D
Explanation:
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29.
The abbreviation NO, when used with respect to electromechanical relays, stands for not operational.
Answer: C
Explanation:
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30.
In a graphical representation of voltage versus time, ________ is displayed on the ________ axis and ________ is displayed on the ________ axis.
A. time, y , voltage, x B. voltage, y , time, x
Answer: A
Explanation:
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