Download Associate CET Practice Exam Questions and Answers and more Exams Electrical and Electronics Engineering in PDF only on Docsity!
pg. 1 professoraxe
Associate CET Practice Exam With 100%
Correct Answers New 202 5/2026 Latest
Update
8.33 meters is the full wavelength in air for what RF frequency? - Correct Answer-36 MHz Decimal 164 would appear as ________ in binary? - Correct Answer- 10100100 A resistor has color stripes yellow, violet, violet, silver. It is: - Correct Answer-470 MegOhm +/- 10% what is the total capacitance of three capacitors valued at 100pf, 100pf, and 50pf when connected in a series? - Correct Answer-25 pf what is the ripple frequency of a full wave single phase bridge rectifier operated at 60Hz? - Correct Answer-120Hz When heated or cooled, a ________emits a voltage. - Correct Answer-theromcouple
pg. 2 professoraxe Which wire size is physically largest? - Correct Answer-# Adding the binary numbers 101011 and 001110 will give you what result? - Correct Answer- 111001 A component that reduces in resistance as it is heated: - Correct Answer-Is a negative temperature coefficient thermistor An autotransformer: - Correct Answer-has a single winding A dual trace oscilloscope differs from a single trace in that only the dual trace scope: - Correct Answer-alternates sweeps If an RF signal voltage is reduced by 6 dB, it is then: - Correct Answer-half the original size Applying positive voltage to the P end and negative to the N end of a germanium diode: - Correct Answer-will forward bias it
pg. 4 professoraxe Which of these would you normally choose to cause an LED to light? - Correct Answer-3 V DC A capacitor (3/8" x 1/8" ceramic or mica) marked 47K is: - Correct Answer-47pf+/- 10% A digital storage oscilloscope: - Correct 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: - Correct Answer- Resistors An antenna that is longer than another: - Correct Answer-will have a lower resonant frequency An 8-bit binary code allows ______ logical combinations. - Correct Answer- 256 An inductor in an electronic circuit: - Correct Answer-resists AC current flow
pg. 5 professoraxe A printer directly connected to a personal computer would use a _______ connection. - Correct Answer-USB or parallel Centronics The digital method of representing characters by using combinations of zeros and ones is called: - Correct Answer- binary Fm utilizes ______ where AM utilizes signal level variations. - Correct Answer-frequency variations What decimal number is represented by the binary number 01101010? - Correct Answer- 106 Decimal 50 would appear as _____ in Hex. - Correct Answer- 32 Of these choices, the display of a DMM would probably be: - Correct Answer-LCD A disadvantage of LCD is: - Correct Answer-environmental temperature sensitivity
pg. 7 professoraxe _______ is a term describing many op-amp circuits. - Correct Answer-Inverting The gain of an op-amp is inversely related to band width as input frequency increases. - Correct Answer-Always The audio detector circuit in an AM radio most commonly is a:
- Correct Answer-Diode A differential amplifier with two identical in phase signals on the inputs will have an output __________. - Correct Answer- of zero A free running oscillator is also called a monostable multivibrator. - Correct Answer-false A fuse which has its fusible wire wrapped around an insulator is: - Correct Answer-a slo-blo type fuse The power transformer in a power supply: - Correct Answer- might step voltages up or down
pg. 8 professoraxe Which of the below would be considered "basic" components of a non switching power supply? - Correct Answer-filter, rectifier, transformer The average of a full sine wave rectified voltage is: - Correct Answer-.637 x peak The ripple frequency for a half wave rectifier operating from 60 Hz electrical power is: - Correct Answer-60 Hz The effective voltage of a 100V peak to peak sine wave is: - Correct Answer-35. A pi filter is an inductor with: - Correct Answer-a capacitor at each end to common An inductor opposes any change in: - Correct Answer-current A capacitor opposes any change in: - Correct Answer-voltage A capacitor will charge to what percent of full charge in one RC time? - Correct Answer-63.
pg. 10 professoraxe Using a resistor instead of an inductor in a power supply pi filter: - Correct Answer-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? - Correct Answer- 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)? - Correct Answer- 25 Correctly connecting a properly rated zener diode across a power supply load will: - Correct Answer-limit the output DC A triac in a power control circuit: - Correct Answer-acts as an on/off switch Which wire gauge has the largest diameter? - Correct Answer- 20
pg. 11 professoraxe What specification should NOT be of concern regarding wire conductors? - Correct Answer-Length The normal open circuit voltage for each nickelcadmium cell is approximatley ________. - Correct Answer-1. Lead free type solder for electronics work is made from: - Correct Answer-silver and tin Soldering stations used for electronics circuit board work have historically been - Correct Answer-30 watts Solder flux mainly: - Correct Answer-removes oxides on metals to be soldered Laminations used for the core of a transformer: - Correct Answer-must be insulated from each other. I=1 amp, R=10,000 ohms. What is the value of voltage? - Correct Answer-10,000 volts
pg. 13 professoraxe 0 dBm V is what levle of received TV signal? - Correct Answer- 1000 microvolts A byte is: - Correct Answer-8 bits In a 3 input AND gate: - Correct Answer-3 input must be high for a high output An LCD operates by polarizing the light through filters. The fluid rotates ____________ degrees. - Correct Answer- 90 To test an SCR with an ohmmeter: - Correct Answer-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: - Correct Answer-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: - Correct Answer-high
pg. 14 professoraxe Which is LEAST likey to cause ESD damage to a MOSFET? - Correct Answer-flux A logic probe: - Correct Answer-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. - Correct Answer-false When working with and testing lead acid batteries: - Correct Answer-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? - Correct Answer-1 volt peak to peak Which of these signal parameters does a spectrum analyzer show? - Correct Answer-Magnitude and frequency
pg. 16 professoraxe Which video system has the highest resolution? - Correct Answer-XVGA You would want to use a dual trace oscilloscope to measure: - Correct Answer-signal differences between two points Common Intermediate Frequencies (IF's) for AM and FM commercial broadcast receivers are: - Correct Answer-455 kHz and 10.7 MHz Analog radio receiver signal compression: - Correct Answer- reduces the high frequency received signal amplitude Coaxial cable line losses at RF frequencies are due to: - Correct Answer-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? - Correct Answer-1,000 millivolts
pg. 17 professoraxe The noise level in a radio receiver is generated mostly in the: - Correct Answer-RF section The fast charging rate for a NiCad or Ni-MH battery should not exceed _______% of its AHr, or ampere hour rating? - Correct Answer- 10 Which one of the following in a PC would be part of disk operations? - Correct Answer-SATA or IDE controller An LED: - Correct Answer-can be used as a fiber optic signal source A dual trace oscilloscope may have: - Correct Answer-a Z input for intensity modulation The gain of an-amp connected as an inverting amplifier is determined by the external _______. - Correct Answer- feedback and input resistors Diodes are made from one type of material. - Correct Answer- false
pg. 19 professoraxe HV PS by: - Correct Answer-draining through a large value resistor to chassis ground Which of these would be an important electrical consideration in the use of a transformer? - Correct Answer-The operating frequency If a 12v product is dissipating 50w, how much load resistance does the device represent? - Correct Answer-2.9 ohms An "audio signal" is often defined as: - Correct Answer- frequencies in the 20 Hz to 15,000 Hz range _____________ will cause a generator to produce DC voltage rather than AC. - Correct Answer-The communtator You supect the unit has an internal short. To prevent further damage when you apply power, you should: - Correct Answer- insert a low resistance high wattage (100 ohm, 10w) resistor in series with the power input
pg. 20 professoraxe A ripple counter: - Correct Answer-is two or more logical flip- flops connected sequentially with the input pulses toggling the first When a voltage is applied to a capacitor: - Correct Answer- current is maximum at first, then reduces as the capacitor becomes charged An electrolytic capacitor in series between the power transformer and the rectifiers in a power supply: - Correct Answer-is part of a voltage doubler circuit Information travels through optic fiber via the flow of: - Correct Answer-photons You would most likely prefer an analog VOM over a DMM for:
- Correct Answer-intermittent functuations Which of these circuits would most likely use a Zener diode? - Correct Answer-a power regulator A block in a digital diagram is called a NOR. Which is true? - Correct Answer-It is a NOT OR or inverted OR
