ASSOCIATE CET PRACTICE EXAM QUESTIONS ANSWERED CORRECTLY LATEST UPDATE 2026

ASSOCIATE CET PRACTICE EXAM QUESTIONS ANSWERED CORRECTLY LATEST UPDATE 2026 8.33 meters is the full wavelength in air for what RF frequency? - Answers 36 MHz Decimal 164 would appear as ________ in binary? - Answers A resistor has color stripes yellow, violet, violet, silver. It is: - Answers 470 MegOhm +/- 10% what is the total capacitance of three capacitors valued at 100pf, 100pf, and 50pf when connected in a series? - Answers 25 pf what is the ripple frequency of a full wave single phase bridge rectifier operated at 60Hz? - Answers 120Hz When heated or cooled, a ________emits a voltage. - Answers theromcouple Which wire size is physically largest? - Answers #8 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 Is 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 6 dB, 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 MHz The radio communication mode that utilizes the basic frequency and one of the side bands: - Answers is called "SSB" When using fiber optics to transfer a signal, the light must: - Answers Enter the "cone of acceptance" The energy stored in a coil is measured in: - Answers Joules 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 V DC A capacitor (3/8" x 1/8" ceramic or mica) marked 47K is: - Answers 47pf+/- 10% A digital storage oscilloscope: - Answers 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: - Answers Resistors An antenna that is longer than another: - Answers will have a lower resonant frequency An 8-bit binary code allows ______ 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 a _______ connection. - Answers USB or parallel Centronics The digital method of representing characters by using combinations of zeros and ones is called: - Answers binary Fm utilizes ______ where AM utilizes signal level variations. - Answers frequency variations What decimal number is represented by the binary number ? - Answers 106 Decimal 50 would appear as _____ in Hex. - Answers 32 Of these choices, the display of a DMM would probably be: - Answers LCD A disadvantage of LCD is: - Answers environmental temperature sensitivity A series DC motor maintains a constant speed with changing loads? - Answers may be damaged by excessive speed Which motor maintains constant speed with changing loads? - Answers Shunt A small power drill or electrics mixer would probably be powered by a/an ______ motor. - Answers series The rotor in an induction motor is not connected to AC or DC power. - Answers True 0 dBm, when referring to audio signals means: - Answers 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? - Answers exactly the same as the one input voltage is: - Answers potential difference between two points _______ is a term describing many op-amp circuits. - Answers Inverting The gain of an op-amp is inversely related to band width as input frequency increases. - Answers Always The audio detector circuit in an AM radio most commonly is a: - Answers Diode A differential amplifier with two identical in phase signals on the inputs will have an output __________. - Answers of zero A free running oscillator is also called a monostable multivibrator. - Answers false A fuse which has its fusible wire wrapped around an insulator is: - Answers a slo-blo type fuse The power transformer in a power supply: - Answers might step voltages up or down Which of the below would be considered "basic" components of a non switching power supply? - Answers filter, rectifier, transformer The average of a full sine wave rectified voltage is: - Answers .637 x peak The ripple frequency for a half wave rectifier operating from 60 Hz electrical power is: - Answers 60 Hz The effective voltage of a 100V peak to peak sine wave is: - Answers 35.35 A pi filter is an inductor with: - Answers a capacitor at each end to common An inductor opposes any change in: - Answers current A capacitor opposes any change in: - Answers voltage A capacitor will charge to what percent of full charge in one RC time? - Answers 63.2 Moving one plate of a capacitor further away from the other will: - Answers decrease capacitance The fact than an inductor opposes any change in current is true of: - Answers AC and DC signals If you increase the value of a capacitor, the capacitive reactance will: - Answers decrease In checking a capacitor to see if it is shorted, open or leaky, you would use the ________Ohm meter range. - Answers Highest The capacitor in a power supply capacitive filter: - Answers is in parallel with the load The time required to dicharge a capacitor depends on the _____________ across its terminals. - Answers the combination of LRC With a given filter type, pure filtering is easiest with: - Answers high frequencies Using a resistor instead of an inductor in a power supply pi filter: - Answers all of the above A power supply whose output voltage does not change whether the load is light or heavy, would have what percent of regulation? - Answers 0 A power supply which measures 50 volts when under no load and 40 volts under a full load has what percent regulation using the % of regulation formula: (%=(EnL - EfL) / EfL x 100)? - Answers 25 Correctly connecting a properly rated zener diode across a power supply load will: - Answers limit the output DC A triac in a power control circuit: - Answers acts as an on/off switch Which wire gauge has the largest diameter? - Answers 20 What specification should NOT be of concern regarding wire conductors? - Answers Length The normal open circuit voltage for each nickelcadmium cell is approximatley ________. - Answers 1.2 Lead free type solder for electronics work is made from: - Answers silver and tin Soldering stations used for electronics circuit board work have historically been - Answers 30 watts Solder flux mainly: - Answers removes oxides on metals to be soldered Laminations used for the core of a transformer: - Answers must be insulated from each other. I=1 amp, R=10,000 ohms. What is the value of voltage? - Answers 10,000 volts If R=200 ohms and I=.02 amps. What is the value of P (power). - Answers .08 watts Which frequency will have a higher loss when using coaxial cable transmission line? - Answers 1 GHz A __________ is a reference antenna that all other antennas with gain are compared to. - Answers Dipole A high frequency antenna ________ than a low frequency one. - Answers is shorter Standing waves on a transmission cable: - Answers can be caused by poor termination Sideband frequencies are produced when a radio carrier frequency is: - Answers modulated Doubling the power in a transmitter output signal is ______ dB gain. - Answers 3 0 dBm V is what levle of received TV signal? - Answers 1000 microvolts A byte is: - Answers 8 bits In a 3 input AND gate: - Answers 3 input must be high for a high output An LCD operates by polarizing the light through filters. The fluid rotates ____________ degrees. - Answers 90 To test an SCR with an ohmmeter: - Answers With + to anode and - to cathode, short gate and anode together. Should go from near "open" to near "short." Using the R x 100 range and testing between the source and drain of an N channel JFET: - Answers readings should be equal in both directions With + voltage to drain or source and a - voltage to the gate on an N channel JFET, internal resistance of the JEFT will be: - Answers high Which is LEAST likey to cause ESD damage to a MOSFET? - Answers flux A logic probe: - Answers indicates high and low voltage conditions In a typical electrical generator, a small AC voltage applied to the field windings is able to control the output level of the generator. - Answers false When working with and testing lead acid batteries: - Answers always wear eye protection, never cause a spark and charge in a ventilated room Audio signals, such as the output from DVD players, satellite receivers and preamplifiers, usually are of what amplitude for input to a TV, modulator or other equipment? - Answers 1 volt peak to peak Which of these signal parameters does a spectrum analyzer show? - Answers Magnitude and frequency Permanent, non-volatile, non-removable data storage in a computer is: - Answers ROM What should be used first to clean a corroded plated soldering iron tip? - Answers Flux, cloth after heating When soldering high voltage connections: - Answers leave the terminal with smooth and rounded covering of solder Class AB operation of an audio amplifier means that current flows through the active device(tube, transistor, FET, IC) for ________ degrees of the input signal wave. - Answers more than 180 but less than 360 A track on a computer removable disk is: - Answers divided into sectors A PC has Conventional RAM and ROM memory area (in a PC it is 0 to 640 kilobytes); Upper memory area (640 Kb to 1 meg) and extended memory area (above 1 megabyte). What other names for internal memory types do PCs have? - Answers Tape drive Which video system has the highest resolution? - Answers XVGA You would want to use a dual trace oscilloscope to measure: - Answers signal differences between two points Common Intermediate Frequencies (IF's) for AM and FM commercial broadcast receivers are: - Answers 455 kHz and 10.7 MHz Analog radio receiver signal compression: - Answers reduces the high frequency received signal amplitude Coaxial cable line losses at RF frequencies are due to: - Answers wire resistance, capacitive and inductive reactance You are troubleshooting audio reproduction equipment and measure the signal to be input into the audio amplifier. What approximate RMS level would you except that signal to be? - Answers 1,000 millivolts The noise level in a radio receiver is generated mostly in the: - Answers RF section The fast charging rate for a NiCad or Ni-MH battery should not exceed _______% of its AHr, or ampere hour rating? - Answers 10