CETa study guide Questions With Answers Graded A+ Assured Success
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Course
CETa
Institution
CETa
Audio signals, such as the output from DVD players, satellite receivers and preamplifers, usually are of
what amplitude for input to a TV, modulator or other equipment? - 1 voltage peak to peak
The gain of an op-amp is directly, but inversely, related to bandwidth as input frequency increases: -
...
CETa study guide
Audio signals, such as the output from DVD players, satellite receivers and preamplifers, usually are of
what amplitude for input to a TV, modulator or other equipment? - 1 voltage peak to peak
The gain of an op-amp is directly, but inversely, related to bandwidth as input frequency increases: -
Always
Applying positive voltage to the P end and negative to the N end of a germanium diode: - will
forward bias it
Some variable capacitors are made so the plates interleave. The capacitance varies as the plates
open(separate) and close. As they open: - The capacitance decreases
A resistor has color stripes yellow, violet, violet, silver. It is? - 470 MegOhm +/- 10%
What is the total capacitance of three capacitors valued at 100uf, 100uf and 50uf when connected in
series? - 25 pf
What is the ripple frequency of a full wave single phase bridge rectifier operated at 60 Hz? - 120
Hz
What emits a voltage when heated or cooled? - Thermocouple
Adding the binary numbers 101011 and 001110 will give you what result? - 111001
A component that reduces in resistance as it is heated. - A negative temperature coefficient
thermistor
8.33 meters is the full wavelength in air for what RF frequency? - 36 MHz
,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 6db it is then : - half the original size
You would probably prefer a digital VOM over an ordinary analog meter: - for most accuracy
Decimal 164 would appear as what in binary? - 10100100
You should expect the video amplifier in a radar or TV receiver to have a frequency response of: -
0-6 MHzd
The radio communication mode that utilizes the basic frequency and one of the side bands: - is
called "SSB"
When using fiber optic to transfer a signal, the light must: - enter the "cone of acceptance"
The energy stored in a coil is measured in: - Henrys
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 VDC
, A capacitor (3/8"x1/8" ceramic or mica) marked 47K is: - 47 pf +/- 10%
A "digital storage oscilloscope": - uses micro processing and memory to allow close analysis of
signal.
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 how many logical combinations. - 256
An inductor in an electronic circuit: - resists AC current flow
A printer directly connected to a personal computer would use what kind of connection? - usb or
parallel centronics
The digital method of representing characters by using combinations of zeros and ones is called: -
Binary
AM utilizes signal level variations where FM utilizes : - Frequency variations
What decimal number is represented by the binary number 01101010? - 106
Decimal 50 would appear as what number in Hex? - 32
The display of a DMM would probably be: - LCD
A disadvantage of LCD is: - Environmental temperature sensitivity
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