Signals and Switches Questions and Answers

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Showing 10 of 27 questions
Q1
 Why does the TTL family use a totem-pole circuit on the output?
  • A It provides active pull-up.
  • B It provides active pull-down.
  • C It provides active pull-up and active pull-down.
Answer: Option C
Q2
What is the frequency of a clock waveform if the period of that waveform is 1.25 s?
  • A 8 kHz
  • B 0.8 kHz
  • C 0.8 MHz
  • D 8 MHz
Answer: Option C
Q3
Internally, a computer's binary data are almost always transmitted on parallel channels, commonly referred to as the:
  • A parallel bus
  • B serial bus
  • C data bus
  • D memory bus
Answer: Option C
Q4
Why is parallel data transmission preferred over serial data transmission for most applications?
  • A It is much slower.
  • B It is cheaper.
  • C More people use it.
  • D It is much faster.
Answer: Option D
Q5
With surface-mount technology (SMT), the devices should:
  • A utilize transistor outline connections
  • B mount directly
  • C have parallel connecting pins
  • D require holes and pads
Answer: Option B
Q6
To forward bias a diode, a ________ potential is needed on the ________ and a ________ is needed on the ________.
  • A negative, cathode, positive, anode
  • B negative, anode, positive, cathode
Answer: Option A
Q7
To forward bias a diode, a ________ potential is needed on the ________ and a ________ is needed on the ________.
  • A negative, cathode, positive, anode
  • B negative, anode, positive, cathode
Answer: Option A
Q8
Why, in most applications, are transistor switches used in place of relays?
  • A They consume less power.
  • B They are faster.
  • C They are quieter and smaller.
  • D all of the above
Answer: Option D
Q9
The family of logic that is composed of bipolar junction transistors is ____.
  • A TTL
  • B CMOS
  • C DIP
  • D BJT
Answer: Option A
Q10
What can a relay provide between the triggering source and the output that semiconductor switching devices cannot?
  • A total isolation
  • B faster
  • C higher current rating
  • D total isolation and higher current rating
Answer: Option D

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