Associate CET practice exam Questions and Answers 100% Pass

Associate CET practice exam Questions and Answers 100% Pass 8.33 meters is the full wavelength in air for what RF frequency? - Answer- 36 MHz Decimal 164 would appear as ________ in binary? - Answer- 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 100pf, 100pf, and 50pf when connected in a series? - Answer- 25 pf what is the ripple frequency of a full wave single phase bridge rectifier operated at 60Hz? - Answer- 120Hz When heated or cooled, a ________emits a voltage. - Answer- theromcouple Which wire size is physically largest? - Answer- #8 Adding the binary numbers 101011 and 001110 will give you what result? - Answer- 111001 A component that reduces in resistance as it is heated: - Answer- Is a negative temperature coefficient thermistor An autotransformer: - Answer- has a single 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 6 dB, 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 MHz The radio communication mode that utilizes the basic frequency and one of the side bands: - Answer- is called "SSB" When using fiber optics to transfer a signal, the light must: - Answer- Enter the "cone of acceptance" The energy stored in a coil is measured in: - Answer- Joules 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 V DC A capacitor (3/8" x 1/8" ceramic or mica) marked 47K is: - Answer- 47pf+/- 10% A digital storage oscilloscope: - Answer- 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: - Answer- Resistors An antenna that is longer than another: - Answer- will have a lower resonant frequency An 8-bit binary code allows ______ 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 a _______ connection. - Answer- USB or parallel Centronics The digital method of representing characters by using combinations of zeros and ones is called: - Answer- binary Fm utilizes ______ where AM utilizes signal level variations. - Answer- frequency variations What decimal number is represented by the binary number ? - Answer- 106 Decimal 50 would appear as _____ in Hex. - Answer- 32 Of these choices, the display of a DMM would probably be: - Answer- LCD A disadvantage of LCD is: - Answer- environmental temperature sensitivity A series DC motor maintains a constant speed with changing loads? - Answer- may be damaged by excessive speed Which motor maintains constant speed with changing loads? - Answer- Shunt A small power drill or electrics mixer would probably be powered by a/an ______ motor. - Answer- series The rotor in an induction motor is not connected to AC or DC power. - Answer- True 0 dBm, when referring to audio signals means: - Answer- decibels referenced to 1 milliwatt If a class A differential amplifier is using only one of its two possible inputs, what will the output signal shape be? - Answer- exactly the same as the one input voltage is: - Answer- potential difference between two points _______ is a term describing many op-amp circuits. - Answer- Inverting The gain of an op-amp is inversely related to band width as input frequency increases. - Answer- Always The audio detector circuit in an AM radio most commonly is a: - Answer- Diode