ASSOCIATE CET PRACTICE EXAM
8.33 meters is the full wavelength in air for what RF frequency? - 36 MHz
Decimal 164 would appear as ________ in binary? -
A resistor has color stripes yellow, violet, violet, silver. It is: - 470 MegOhm +/- 10%
what is the total capacitance of three capacitors val...
8.33 meters is the full wavelength in air for what RF frequency? - 36 MHz
Decimal 164 would appear as ________ in binary? - 10100100
A resistor has color stripes yellow, violet, violet, silver. It is: - 470 MegOhm +/- 10%
what is the total capacitance of three capacitors valued at 100pf, 100pf, and 50pf when
connected in a series? - 25 pf
what is the ripple frequency of a full wave single phase bridge rectifier operated at
60Hz? - 120Hz
When heated or cooled, a ________emits a voltage. - theromcouple
Which wire size is physically largest? - #8
Adding the binary numbers 101011 and 001110 will give you what result? - 111001
A component that reduces in resistance as it is heated: - Is a negative temperature
coefficient thermistor
An autotransformer: - has a single winding
A dual trace oscilloscope differs from a single trace in that only the dual trace scope: -
alternates sweeps
If an RF signal voltage is reduced by 6 dB, it is then: - half the original size
Applying positive voltage to the P end and negative to the N end of a germanium diode:
- will forward bias it
You would probably prefer a digital VOM over an ordinary analog meter: - for most
accuracy
You should expect the video amplifier in a radar or TV receiver to have a frequency
response of: - 0-6 MHz
, The radio communication mode that utilizes the basic frequency and one of the side
bands: - is called "SSB"
When using fiber optics to transfer a signal, the light must: - Enter the "cone of
acceptance"
The energy stored in a coil is measured in: - Joules
The telephone communication term "cellular" refers to: - small geographic areas
covered by each base station.
Integrated Circuit failures often exhibit: - open or short conditions
Which of these would you normally choose to cause an LED to light? - 3 V DC
A capacitor (3/8" x 1/8" ceramic or mica) marked 47K is: - 47pf+/- 10%
A digital storage oscilloscope: - uses micro processing and memory to allow close
analysis of signals; is specially designed for analyzing digital signals; converts analog
input signals to a digital display
Carbon microphones are much like variable: - Resistors
An antenna that is longer than another: - will have a lower resonant frequency
An 8-bit binary code allows ______ logical combinations. - 256
An inductor in an electronic circuit: - resists AC current flow
A printer directly connected to a personal computer would use a _______ connection. -
USB or parallel Centronics
The digital method of representing characters by using combinations of zeros and ones
is called: - binary
Fm utilizes ______ where AM utilizes signal level variations. - frequency variations
What decimal number is represented by the binary number 01101010? - 106
Decimal 50 would appear as _____ in Hex. - 32
Of these choices, the display of a DMM would probably be: - LCD
A disadvantage of LCD is: - environmental temperature sensitivity
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