Related Questions

According to the passage, what is a signal?
A The most difficult form of communication to describe.
B A form of communication which may be used across long distances.
C A form of communication that interrupts the environment.
D The form of communication most related to cultural perceptions
According to the passage , the passage, the culture of the Roman Empire was destroyed by -
A During 100 BC
B civil war
C religious conflicts
D an act of invasion
A given signal's second harmonic is twice the given signal's __________ frequency?
A Fourier
B Foundation
C Fundamental
D Field
Which of the following permits a microwave signal to travel in one direction with virtually no loss, but severely attenuates any signal attempting to travel in the reverse direction?
A Isolator
B Wave trap
C Tunnel diode
D Circulator
The transducers that converts the input signal into the output signal, which is a discrete function of time is known as ___________ transducer.
A Active
B Analog
C Digital
D Pulse
Signal will become zero when the feedback signal and reference signs are equal.
A Input
B Actuating
C Feedback
D Reference
The conventional mechnical transducer, which converts pressure signal to displacement signal is
A Spring
B Manometer
C Strain gauge
D None of these
After coding a document into a digital signal, it can be sent by telephone, telex or satellite to the receiver where the signal is decoded and an exact copy of the original document is made. What is it called?
A Telex
B Word processor
C Facsimile
D Electronic mail
E None of the above
A modulator converts a _____ signal to a(n) _____ signal.
A FSK; PSK
B PSK; FSK
C analog; digital
D digital; analog
E None of the above
Judging from the passage, we can say that this passage is mainly about __________.
A the superiority of human beings over some creatures in terms of senses
B how changes in the seasons are perceived by the deep-sea creatures
C life of sea creatures at the bottom of the sea

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