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Digital Electronics - Signals and Switches

Exercise : Signals and Switches - General Questions
16.
The serial format for transmitting binary information uses:
a single conductor
multiple conductors
infrared technology
fiber-optic
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
Which device(s) have almost ideal ON and OFF resistances?
electromechanical relays
manual switches
semiconductor devices (diodes and transistors)
electromechanical relays and manual switches
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
A diode placed in parallel across a relay coil serves what function?
to regulate input voltage
to protect the coil from arcing
to ensure most of the current passes through the coil
to reduce arcing across the relay contacts
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
Serial communication can be sped up by:
using silver or gold conductors instead of copper
using high-speed clock signals
adjusting the duty cycle of the binary information
using silver or gold conductors instead of copper and high-speed clock signals
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
What is the period of a clock waveform that has a frequency of 15.4 kHz?
649 s
6.49 s
64.9 s
0.649 s
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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