The Maximum ground resistance in an equipment installation is required by Volume 1 of the Phillippine Electronic Code (Safety Code) is..
"5 ohms"
"5 ohms"
Monday 29 August 2011
The _________ is equal to the number of electrons emitted per second times the electron charge.
The _________ is equal to the number of electrons emitted per second times the electron charge.
"photocurrent"
"photocurrent"
A band of frequencies 200kHz wide is and is designated by its center frequency.
A band of frequencies 200kHz wide is and is designated by its center frequency.
"FM broadcast channel"
"FM broadcast channel"
When the electric flied in waveguide is perpendicular to the direction of wave propagation, the mode is said to be
When the electric flied in waveguide is perpendicular to the direction of wave propagation, the mode is said to be
"transverse electric"
"transverse electric"
The method of generating FM used by broadcast station is _______________.
The method of generating FM used by broadcast station is _______________.
"Indirect"
"Indirect"
The outer conductor of the coaxial cable is usually grounded
The outer conductor of the coaxial cable is usually grounded
"at the beginning and at the end of the cable"
"at the beginning and at the end of the cable"
A non-exclusive facility at which the public may, by the payment of appropriate fees, place as well as receive telephone calls or a telegram or other messages.
A non-exclusive facility at which the public may, by the payment of appropriate fees, place as well as receive telephone calls or a telegram or other messages.
"Public Toll Calling Station"
"Public Toll Calling Station"
Asynchronous transmission is
Asynchronous transmission is
"Asynchronous transmission is less efficient but simpler"
"Asynchronous transmission is less efficient but simpler"
The most commonly used amplitude demodulator is the ______?
The most commonly used amplitude demodulator is the ________?
"Envelope Detector"
"Envelope Detector"
PCM system require _______.
PCM system require _______.
PCM stands for Pulse Code Modulation.PCM technology is a means by which standard audio signals (which are represented by waveforms) are converted to digital audio signals (which are represented by 1's and 0's - much like computer data) with little, or no, compression. The method of audio conversion is used on most digital audio formats, including CDs and DVD-Audio, and is also used to some extent in Blu-ray and HD-DVD applications. The PCM signal is converted back to analog form for distribution to loudspeakers. readmore..
Therefore i conclude that PCM system require "large bandwith"
PCM stands for Pulse Code Modulation.PCM technology is a means by which standard audio signals (which are represented by waveforms) are converted to digital audio signals (which are represented by 1's and 0's - much like computer data) with little, or no, compression. The method of audio conversion is used on most digital audio formats, including CDs and DVD-Audio, and is also used to some extent in Blu-ray and HD-DVD applications. The PCM signal is converted back to analog form for distribution to loudspeakers. readmore..
Therefore i conclude that PCM system require "large bandwith"
What is an Erlang?
What is an Erlang?
"it is equal to the number of simultaneous calls originated during a specific hourly period"
"it is equal to the number of simultaneous calls originated during a specific hourly period"
What percentage is the reference black level of a horizontal sync pulse?
What percentage is the reference black level of a horizontal sync pulse?
"70%"
What is a device that detects both vertically and horizontally polarized signal simultaneously?
What is a device that detects both vertically and horizontally polarized signal simultaneously?
"orthomode transducer"
What is the channel number of an FM station with 88.1 MHz carrier?
What is the channel number of an FM station with 88.1 MHz carrier?
"201"
What is the purpose of the electromagnetic field which surrounds a travelling wave tube?
What is the purpose of the electromagnetic field which surrounds a travelling wave tube?
"to keep the electrons from spreading out"
Amplitude modulation that vary the carrier amplitude with the modulating signal by passing it through an attenuator work on the principle of
Amplitude modulation that vary the carrier amplitude with the modulating signal by passing it through an attenuator work on the principle of
"Variable Resistance"
Short wave broadcasting uses what kind of propagation?
Short wave broadcasting uses what kind of propagation?
"Sky Waves"
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