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CETa Study Guide Exam With Accurate Answers 100% Correct
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CETa Study Guide Exam With AccurateAnswers 100% Correct
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 produces a voltage when heated or cooled? - ANSWER Thermocouple
The addition of the binary numbers 101011 and 001110 will produce what? - ANSWER
111001
A component that decreases in resistance as it is heated. - ANSWER A negative
temperature coefficient thermistor
An autotransformer - ANSWER has one 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 uses 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
The digital method of representing characters by using combinations of zeros and ones
is called: - ANSWER Binary
AM uses signal level variations where FM uses : - ANSWER Frequency variations
What decimal number is represented by the binary number 01101010? - ANSWER 106
Decimal 50 would appear as what number in Hex? - ANSWER 32
The display of a DMM would likely be: - ANSWER LCD
A disadvantage of LCD is: - ANSWER Sensitivity to environmental temperature
A series DC motor with no load: - ANSWER might be damaged by excessive speed
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