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CETa study guide8.33 meters is the full wavelength in air for what RF frequency? - correct answer ✔✔36 MHz
Decimal 164 would appear as what in binary? - correct answer ✔✔10100100
A resistor has color stripes yellow, violet, violet, silver. It is? - correct answer ✔✔470 MegOhm +/- 10%
What is the total capacitance of three capacitors valued at 100uf, 100uf and 50uf when connected in
series? - correct answer ✔✔25 pf
What is the ripple frequency of a full wave single phase bridge rectifier operated at 60 Hz? - correct
answer ✔✔120 Hz
What emits a voltage when heated or cooled? - correct answer ✔✔Thermocouple
Adding the binary numbers 101011 and 001110 will give you what result? - correct answer ✔✔111001
A component that reduces in resistance as it is heated. - correct answer ✔✔A negative temperature
coefficient thermistor
An autotransformer - correct answer ✔✔has a single winding
A dual trace oscilloscope differs from a single trace in that only the dual trace scope: - correct answer
✔✔alternates sweeps
If an RF signal Voltage is reduced by 6db it is then : - correct answer ✔✔half the original size
,Applying positive voltage to the P end and negative to the N end of a germanium diode: - correct answer
✔✔will forward bias it
You would probably prefer a digital VOM over an ordinary analog meter: - correct answer ✔✔for most
accuracy
You should expect the video amplifier in a radar or TV receiver to have a frequency response of: - correct
answer ✔✔0-6 MHzd
The radio communication mode that utilizes the basic frequency and one of the side bands: - correct
answer ✔✔is called "SSB"
When using fiber optic to transfer a signal, the light must: - correct answer ✔✔enter the "cone of
acceptance"
The energy stored in a coil is measured in: - correct answer ✔✔Henrys
The telephone communication term "Cellular" refers to: - correct answer ✔✔small geographic areas
covered by each base station
Integrated circuit failures often exhibit: - correct answer ✔✔open or short conditions
Which of these would you normally choose to cause an LED to light? - correct answer ✔✔3 VDC
A capacitor (3/8"x1/8" ceramic or mica) marked 47K is: - correct answer ✔✔47 pf +/- 10%
A "digital storage oscilloscope": - correct answer ✔✔uses micro processing and memory to allow close
analysis of signal.
Carbon microphones are much like variable: - correct answer ✔✔resistors
, An antenna that is longer than another: - correct answer ✔✔will have a lower resonant frequency
An 8 bit binary code allows how many logical combinations. - correct answer ✔✔256
An inductor in an electronic circuit: - correct answer ✔✔resists AC current flow
A printer directly connected to a personal computer would use what kind of connection? - correct
answer ✔✔usb or parallel centronics
The digital method of representing characters by using combinations of zeros and ones is called: - correct
answer ✔✔Binary
AM utilizes signal level variations where FM utilizes : - correct answer ✔✔Frequency variations
What decimal number is represented by the binary number 01101010? - correct answer ✔✔106
Decimal 50 would appear as what number in Hex? - correct answer ✔✔32
The display of a DMM would probably be: - correct answer ✔✔LCD
A disadvantage of LCD is: - correct answer ✔✔Environmental temperature sensitivity
A series DC motor with no load: - correct answer ✔✔maybe damaged by excessive speed
Which motor maintains a constant speed with changing load? - correct answer ✔✔Shunt
A small power drill or electric mixer would probably be powered by a - correct answer ✔✔Series Motor
0 db when referring to audio signals means: - correct answer ✔✔decibels referenced to 1 milliwatt
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