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CETa EXAM QUESTIONS AND ANSWERS8.33 meters is the full wavelength in air for what RF frequency? - Answers -36 MHz
Decimal 164 would appear as what in binary? - Answers -10100100
A resistor has color stripes yellow, violet, violet, silver. It is? - Answers -470 MegOhm
+/- 10%
The telephone communication term "Cellular" refers to: - Answers -small geographic
areas covered by each base station
Integrated circuit failures often exhibit: - Answers -open or short conditions
Which of these would you normally choose to cause an LED to light? - Answers -3 VDC
A capacitor (3/8"x1/8" ceramic or mica) marked 47K is: - Answers -47 pf +/- 10%
A "digital storage oscilloscope": - Answers -uses micro processing and memory to allow
close analysis of signal.
Carbon microphones are much like variable: - Answers -resistors
An antenna that is longer than another: - Answers -will have a lower resonant frequency
An 8 bit binary code allows how many logical combinations. - Answers -256
An inductor in an electronic circuit: - Answers -resists AC current flow
A printer directly connected to a personal computer would use what kind of connection?
- Answers -usb or parallel centronics
The digital method of representing characters by using combinations of zeros and ones
is called: - Answers -Binary
AM utilizes signal level variations where FM utilizes : - Answers -Frequency variations
What decimal number is represented by the binary number 01101010? - Answers -106
Decimal 50 would appear as what number in Hex? - Answers -32
The display of a DMM would probably be: - Answers -LCD
A disadvantage of LCD is: - Answers -Environmental temperature sensitivity
, What is the total capacitance of three capacitors valued at 100uf, 100uf and 50uf when
connected in series? - Answers -25 pf
What is the ripple frequency of a full wave single phase bridge rectifier operated at 60
Hz? - Answers -120 Hz
What emits a voltage when heated or cooled? - Answers -Thermocouple
Adding the binary numbers 101011 and 001110 will give you what result? - Answers -
111001
A component that reduces in resistance as it is heated. - Answers -A negative
temperature coefficient thermistor
An autotransformer - Answers -has a single winding
A dual trace oscilloscope differs from a single trace in that only the dual trace scope: -
Answers -alternates sweeps
If an RF signal Voltage is reduced by 6db it is then : - Answers -half the original size
Applying positive voltage to the P end and negative to the N end of a germanium diode:
- Answers -will forward bias it
You would probably prefer a digital VOM over an ordinary analog meter: - Answers -for
most accuracy
You should expect the video amplifier in a radar or TV receiver to have a frequency
response of: - Answers -0-6 MHzd
The radio communication mode that utilizes the basic frequency and one of the side
bands: - Answers -is called "SSB"
When using fiber optic to transfer a signal, the light must: - Answers -enter the "cone of
acceptance"
The energy stored in a coil is measured in: - Answers –Henrys
A series DC motor with no load: - Answers -maybe damaged by excessive speed
Which motor maintains a constant speed with changing load? - Answers -Shunt
A small power drill or electric mixer would probably be powered by a - Answers -Series
Motor
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