CETa study guide exam with complete solutions 2024_2025
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Course
CETa
Institution
CETa
8.33 meters is the full wavelength in air for what RF frequency?
36 MHz
Decimal 164 would appear as what in binary?
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A resistor has color stripes yellow, vi...
CETa study guide exam with complete
solutions 2024/2025
8.33 meters is the full wavelength in air for what RF frequency? - ANSWER- 36
MHz
Decimal 164 would appear as what in binary? - ANSWER- 10100100
A resistor has color stripes yellow, violet, violet, silver. It is? - ANSWER- 470
MegOhm +/- 10%
What is the total capacitance of three capacitors valued at 100uf, 100uf and 50uf
when connected in series? - ANSWER- 25 pf
What is the ripple frequency of a full wave single phase bridge rectifier operated
at 60 Hz? - ANSWER- 120 Hz
What emits a voltage when heated or cooled? - ANSWER- Thermocouple
Adding the binary numbers 101011 and 001110 will give you what result? -
ANSWER- 111001
A component that reduces in resistance as it is heated. - ANSWER- A negative
temperature coefficient thermistor
An autotransformer - ANSWER- has a single winding
A dual trace oscilloscope differs from a single trace in that only the dual trace
scope: - ANSWER- alternates sweeps
If an RF signal Voltage is reduced by 6db it is then : - ANSWER- half the original
size
, Applying positive voltage to the P end and negative to the N end of a germanium
diode: - ANSWER- will forward bias it
You would probably prefer a digital VOM over an ordinary analog meter: -
ANSWER- for most accuracy
You should expect the video amplifier in a radar or TV receiver to have a
frequency response of: - ANSWER- 0-6 MHzd
The radio communication mode that utilizes the basic frequency and one of the
side bands: - ANSWER- is called "SSB"
When using fiber optic to transfer a signal, the light must: - ANSWER- enter the
"cone of acceptance"
The energy stored in a coil is measured in: - ANSWER- Henrys
The telephone communication term "Cellular" refers to: - ANSWER- small
geographic areas covered by each base station
Integrated circuit failures often exhibit: - ANSWER- open or short conditions
Which of these would you normally choose to cause an LED to light? - ANSWER-
3 VDC
A capacitor (3/8"x1/8" ceramic or mica) marked 47K is: - ANSWER- 47 pf +/- 10%
A "digital storage oscilloscope": - ANSWER- uses micro processing and memory
to allow close analysis of signal.
Carbon microphones are much like variable: - ANSWER- resistors
An antenna that is longer than another: - ANSWER- will have a lower resonant
frequency
An 8 bit binary code allows how many logical combinations. - ANSWER- 256
An inductor in an electronic circuit: - ANSWER- resists AC current flow
A printer directly connected to a personal computer would use what kind of
connection? - ANSWER- usb or parallel centronics
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