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CETa Exam 100% Correct Answers
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CETa Exam 100% Correct AnswersVGA - ANSWER 640 x 480
256 Colors
15 Pins
SVGA - ANSWER 800 x 600
256 Colors
15 Pins
XGA - ANSWER 1024 x 768 or 1366 x 768
16 mil, HD Colors
15 Pins
Widescreen - ANSWER 1280 x 720 or 1920 x 1080
DVI or HDMI Connectors
Random Access Memory - ANSWER RAM
Read Only Memory - ANSWER ROM
Programmable Read Only Memory - ANSWER PROM
Electrical Programmable Read Only Memory - ANSWER EPROM
, Electrically Erasable PROM - ANSWER EEPROM
50 Ohms - ANSWER Impedance generally used in radio communications
RF Section - ANSWER Part of radio receiver, receives incoming RF electrical-magnetic
signal. Very broad banded, amplifies input signals. Most noise is produced here.
Mixer - ANSWER Part of radio receiver, heterodynes received signal with signal
produced by local oscillator circuit. Output contains the sum and difference
frequencies.
IF Section - ANSWER Part of radio receiver, uses a set frequency throughout. Amplifies
desired tuned frequency.
10.7 MHz - ANSWER Commonly used FM Radio Frequency
44 MHz - ANSWER Commonly used Television Frequency
1.6, 3.35, 9, and 40 MHz - ANSWER Commonly used Short Wave Radio Frequencies
Detector Circuit - ANSWER Part of radio receiver, made of a diode; rectifies incoming
RF signal.
AGC/AVC Section - ANSWER Part of radio receiver, samples the signal at the detector
and develops a control voltage that is fed back to the first IF Amp. Ideally amplifies weak
incoming signals and attenuates strong ones allowing a constant, desirable output
volume.
AF Section - ANSWER Part of radio receiver, audio amplification network that drives
speakers. The load must match the circuitry of the radio.
Dipole - ANSWER Used as reference and as a comparison in measuring "gain" of
another antenna.
Yagi - ANSWER "Beam" antenna that focuses all of its energy in a narrow beamwidth.
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