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CETA EXAM 2024/2025 WITH 100% ACCURATE SOLUTIONS, Exams of Nursing

CETA EXAM 2024/2025 WITH 100% ACCURATE SOLUTIONS

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2024/2025

Available from 09/12/2024

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CETA EXAM 2024/2025 WITH 100%

ACCURATE SOLUTIONS

8.33 meters is the full wavelength in air for what RF frequency? - Precise Answer ✔✔36 MHz Decimal 164 would appear as what in binary? - Precise Answer ✔✔ 10100100 A resistor has color stripes yellow, violet, violet, silver. It is? - Precise Answer ✔✔470 MegOhm +/- 10% What is the total capacitance of three capacitors valued at 100uf, 100uf and 50uf when connected in series? - Precise Answer ✔✔25 pf What is the ripple frequency of a full wave single phase bridge rectifier operated at 60 Hz? - Precise Answer ✔✔120 Hz What emits a voltage when heated or cooled? - Precise Answer ✔✔Thermocouple Adding the binary numbers 101011 and 001110 will give you what result? - Precise Answer ✔✔ 111001

A component that reduces in resistance as it is heated. - Precise Answer ✔✔A negative temperature coefficient thermistor An autotransformer - Precise Answer ✔✔has a single winding A dual trace oscilloscope differs from a single trace in that only the dual trace scope: - Precise Answer ✔✔alternates sweeps If an RF signal Voltage is reduced by 6db it is then : - Precise Answer ✔✔half the original size Applying positive voltage to the P end and negative to the N end of a germanium diode: - Precise Answer ✔✔will forward bias it You would probably prefer a digital VOM over an ordinary analog meter: - Precise Answer ✔✔for most accuracy You should expect the video amplifier in a radar or TV receiver to have a frequency response of: - Precise Answer ✔✔0-6 MHzd The radio communication mode that utilizes the basic frequency and one of the side bands: - Precise Answer ✔✔is called "SSB" When using fiber optic to transfer a signal, the light must: - Precise Answer ✔✔enter the "cone of acceptance"

The energy stored in a coil is measured in: - Precise Answer ✔✔Henrys The telephone communication term "Cellular" refers to: - Precise Answer ✔✔small geographic areas covered by each base station Integrated circuit failures often exhibit: - Precise Answer ✔✔open or short conditions Which of these would you normally choose to cause an LED to light? - Precise Answer ✔✔3 VDC A capacitor (3/8"x1/8" ceramic or mica) marked 47K is: - Precise Answer ✔✔47 pf +/- 10% A "digital storage oscilloscope": - Precise Answer ✔✔uses micro processing and memory to allow close analysis of signal. Carbon microphones are much like variable: - Precise Answer ✔✔resistors An antenna that is longer than another: - Precise Answer ✔✔will have a lower resonant frequency

An 8 bit binary code allows how many logical combinations. - Precise Answer ✔✔ 256 An inductor in an electronic circuit: - Precise Answer ✔✔resists AC current flow A printer directly connected to a personal computer would use what kind of connection? - Precise Answer ✔✔usb or parallel centronics The digital method of representing characters by using combinations of zeros and ones is called: - Precise Answer ✔✔Binary AM utilizes signal level variations where FM utilizes : - Precise Answer ✔✔Frequency variations What decimal number is represented by the binary number 01101010? - Precise Answer ✔✔ 106 Decimal 50 would appear as what number in Hex? - Precise Answer ✔✔ 32 The display of a DMM would probably be: - Precise Answer ✔✔LCD A disadvantage of LCD is: - Precise Answer ✔✔Environmental temperature sensitivity

A series DC motor with no load: - Precise Answer ✔✔maybe damaged by excessive speed Which motor maintains a constant speed with changing load? - Precise Answer ✔✔Shunt A small power drill or electric mixer would probably be powered by a - Precise Answer ✔✔Series Motor 0 db when referring to audio signals means: - Precise 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 shape be? - Precise Answer ✔✔Exactly the same as the one input Voltage is: - Precise Answer ✔✔Potential difference between two points What is a term describing many op-amp circuits? - Precise Answer ✔✔inverting The gain of an op-amp is directly, but inversely, related to bandwidth as input frequency increases: - Precise Answer ✔✔Always

The audio detector circuit in an AM radio most commonly is a: - Precise Answer ✔✔diode A differential amplifier with two identical in-phase signals on the inputs will have an output of: - Precise Answer ✔✔zero A fuse which has its fusible wire wrapped around an insulator is: - Precise Answer ✔✔Slo-blo type fuse The power transformer in a power supply: - Precise Answer ✔✔Might step voltages up or down Which of the below would be considered "basic" components of a non switching power supply? - Precise Answer ✔✔Filter, regulator, rectifier, transformer The average of a full sine wave rectified voltage is : - Precise Answer ✔✔.637 X Peak The ripple frequency for a half wave rectifier operating from 60 Hz electrical power is: - Precise Answer ✔✔60 HZ The effective voltage of a 100v Peak-to-peak sine wave is: - Precise Answer ✔✔35.35 VAC

A pi filter is an inductor with: - Precise Answer ✔✔A capacitor at each end to common An inductor opposes any change in: - Precise Answer ✔✔current A capacitor opposes any change in: - Precise Answer ✔✔voltage A capacitor will charge to what percent of full charge in one RC time? - Precise Answer ✔✔63. Moving one plate of a capacitor further away from the other will: - Precise Answer ✔✔decrease capacitance The fact that an inductor opposes any change in current is true of: - Precise Answer ✔✔AC and DC signals If you increase the value of a capacitor, the capacitive reactance will: - Precise Answer ✔✔decrease In checking a capacitor to see if it is really shorted, open or leaky: - Precise Answer ✔✔you would use the highest ohm meter range. The capacitor in a power supply capacitive filter: - Precise Answer ✔✔Is in parallel with the load

The time required to discharge a capacitor depends on the: - Precise Answer ✔✔combination of LRC across its terminals. With a given filter type, pure filtering is easiest with: - Precise Answer ✔✔High frequencies A power supply whose output voltage does not change whether the load is light or heavy would have what percent of regulation? - Precise Answer ✔✔ 0 A power supply which measures 50 volts when under a small load and 40 volts under a heavy load has what percent regulation using the % of regulation formula(%=(EnL-EfL)/EfLX100)? - Precise Answer ✔✔ 20 Correctly connecting a properly rated zener diode across a power supply load will: - Precise Answer ✔✔limit the output DC A triac in a power control circuit: - Precise Answer ✔✔acts as an on/off switch What specification should not be of concern regarding wire conductors?

  • Precise Answer ✔✔capacitance The normal open circuit voltage for each nickel-cadmium cell is approximately? - Precise Answer ✔✔1.2 volts

Lead free type solder for electronics work is made from: - Precise Answer ✔✔Silver and Tin Soldering stations used for electronics circuit-board work have historically been(approximately): - Precise Answer ✔✔30 Watts Solder flux mainly: - Precise Answer ✔✔removes oxides on metals to be soldered Laminations used for the core of a transformer: - Precise Answer ✔✔must be insulated from each other I=1 amp, R=10,000 ohms. What is the value of the voltage? - Precise Answer ✔✔10,000 volts If R=200 ohms and I=.02 amps. What is the value of P(power)? - Precise Answer ✔✔.08 watts Which frequency will have a higher loss when using coaxial cable transmission line? - Precise Answer ✔✔1 Ghz What is a reference antenna that all other antennas with gain are compared to? - Precise Answer ✔✔dipole A high frequency antenna is than a low frequency one. - Precise Answer ✔✔is shorter

Standing waves on a transmission cable: - Precise Answer ✔✔can be caused by poor termination Sideband frequencies are produced when an radio carrier frequency is: - Precise Answer ✔✔modulated Doubling the power in a transmitter output is a: - Precise Answer ✔✔ 3 db gain 0 db is what level of received TV signal? - Precise Answer ✔✔ 1000 microVolts A byte is: - Precise Answer ✔✔8 bits In a 3 input AND gate: - Precise Answer ✔✔3 input must be high for a high output An LCD operates by polarizing the light through filters. The fluid rotates the light: - Precise Answer ✔✔90 degrees To test an SCR with an ohmmeter. - Precise Answer ✔✔with + to anode and - to cathode, short gate and anode together

Using the Rx100 range and testing between the source and drain of an N channel JFET: - Precise 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 JFET will be: - Precise Answer ✔✔High Which is least likely to cause ESD damage to MOSFET - Precise Answer ✔✔flux A logic probe: - Precise Answer ✔✔indicates high and low voltage conditions In a typical electrical generator a small DC voltage applied to the field windings: - Precise Answer ✔✔is able to control the output level of the generator When working with and testing lead acid batteries - Precise Answer ✔✔Always wear eye protection and never cause a spark 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? - Precise Answer ✔✔1 voltage peak to peak

Which of these signal parameters does a spectrum analyzer show? - Precise Answer ✔✔Magnitude and frequency Permanent, non-volatile, non removable data storage in a computer is: - Precise Answer ✔✔ROM What should be used first to clean a corroded plated soldering iron tip? - Precise Answer ✔✔flux, cloth and heating When soldering high voltage connections: - Precise Answer ✔✔Leave the terminal with a 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 how many degrees of the input signal wave? - Precise Answer ✔✔more than 180 but less then 360 A track on a computer disk is: - Precise Answer ✔✔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 kilobytes to 1 meg) and extended memory area(above 1 meg). What other names for internal memory types do PCs have? - Precise Answer ✔✔Tape Drive Which video system has the highest resolution? - Precise Answer ✔✔XVGA

You would want to use a dual trace oscilloscope to measure: - Precise Answer ✔✔signal difference between two points Common Intermediate Frequencies(IF's) and FM commercial broadcast receivers are: - Precise Answer ✔✔455 MHz and 10.7MHz Analog radio receiver signal compression: - Precise Answer ✔✔reduces the high frequency received signal amplitude Coaxial cable line losses at RF frequencies are due to: - Precise 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 expect the signal to be? - Precise Answer ✔✔1000 millivolts The noise level in a radio receiver is generated mostly in the: - Precise Answer ✔✔RF section The fast charging rate for a NiCad of Ni-Mh battery should not exceed: - Precise Answer ✔✔10% of its AHr or ampere hour rating Which of the following in a PC would be part of disk operations? - Precise Answer ✔✔SATA or IDE controller

An LED - Precise Answer ✔✔can be used as a fiber optic signal source A dual trace oscilloscope may have - Precise Answer ✔✔A Z input for intensity modulation The gain of an op-amp connected as an inverting amplifier is determined by the external - Precise Answer ✔✔feedback and input resistors Which propagation condition would be significant for a UHF signal to be received at a distance of 500 miles? - Precise Answer ✔✔Tropospheric ducting A three input NAND has two low inputs and one high input. The output is: - Precise Answer ✔✔High Which of these would be considered a component of a "basic" power supply? - Precise Answer ✔✔diode rectifier A "Video Signal" is defined as: - Precise Answer ✔✔baseband including visual information You are servicing a power supply and have disconnected power. It has several 250 uf capacitors connected in parallel. To avoid shock these capacitors: - Precise Answer ✔✔Should be discharged to chassis ground, through a suitable resistor

A schematic used in electronic: - Precise Answer ✔✔is much like a road map for following signals High voltage should be discharged before servicing a product. After disabling AC input power, discharge a high voltage power source by: - Precise Answer ✔✔draining thru a large value resistor to chassis ground Which of these would be an important electrical consideration in the use of a transformer? - Precise Answer ✔✔The operating frequency If a 12v product is dissipating 50w, how much load resistance does the device represent? - Precise Answer ✔✔2.9 ohms An "audio signal" is defined as: - Precise Answer ✔✔frequencies in the 20Hz to 15000Hz range What will cause a generator to produce DC voltage rather then AC? - Precise Answer ✔✔the commutator You suspect the unit has an internal short. To prevent further damage when you apply power, you should: - Precise Answer ✔✔insert a low resistance high wattage(100ohm, 10w) resistor in series with the power input. A ripple counter: - Precise Answer ✔✔Is two or more logical flip-flops connected sequentially with the input pulses toggling the first one

When voltage is applied to a capacitor: - Precise Answer ✔✔current is maximum at first, then reduces as the capacitor becomes charges. An electrolytic capacitor in series between the power transformer and the rectifiers in a power supply: - Precise Answer ✔✔is part of a voltage doubler circuit Information travels through optic fiber via the flow of: - Precise Answer ✔✔photons You would most likely prefer an analog VOM over a DMM for: - Precise Answer ✔✔accuracy Which of these circuits would most likely use a zener diode? - Precise Answer ✔✔a power regulator A block in a digital diagram is called a NOR. Which is true? - Precise Answer ✔✔It is a NOT OR or Inverted OR Which of these statements is most true relating to schematic diagrams of electronic devices? - Precise Answer ✔✔They represent signal paths In personal computer technology, ROM indicates: - Precise Answer ✔✔memory that may only be read from

A light emitting diode will light when: - Precise Answer ✔✔It is forward biased. A zener diode is rated 6.3V. This tells you: - Precise Answer ✔✔it conducts to limit the voltage across it to 6.3V A triac is frequently used: - Precise Answer ✔✔for motor speed control, to electronically turn equipment on and off A technician must be knowledgeable about "ESD": - Precise Answer ✔✔because static discharge can destroy many components. In a motor, the counter-emf voltage induced in the armature the source current. - Precise Answer ✔✔subtracts from One significant difference between a TV antenna and a CB antenna would be: - Precise Answer ✔✔TV is polarized horizontal while CB is vertical "Switching power supplies": - Precise Answer ✔✔sometimes called DC to DC converters, maybe operated of AC or DC sources Which of these would you likely find in a DC motor speed control circuit? - Precise Answer ✔✔An op-amp

A transformer on a schematic has two leads connected to the primary and three to the secondary, one to each end and one in the middle. This is an: - Precise Answer ✔✔center tapped secondary transformer The 9 pin DB9 connector serial port on a PC is commonly called the: - Precise Answer ✔✔RS232 standard Three capacitors, of 470pf, 560pf and .47pf are in parallel with each other. The total is: - Precise Answer ✔✔1030.47pf Ohm's law provides equations relating to: - Precise Answer ✔✔Volts, amps and resistance A power source such as a generator or battery might be compared to what component in a water supply system? - Precise Answer ✔✔A water tank Which of these is a good indication of the quality of an analog meter? - Precise Answer ✔✔The ohms per volt rating The vertical axis of an oscilloscope display is also called the: - Precise Answer ✔✔Y axis If you increase the value of an inductor, the inductive reactance will: - Precise Answer ✔✔increase

Which would least likely be a high-voltage(above 1000V) capacitor? - Precise Answer ✔✔electrolytic The rechargeable cell currently used in many consumer portable products would be: - Precise Answer ✔✔Lithium-ion A solid-state regulator: - Precise Answer ✔✔Varies conduction to maintain a level output voltage A current-carrying conductor is placed in a magnetic field perpendicular to the lines of flux. It tends to move in what direction to the force of magnetic lines of flux, as determined by Flemings left-hand rule. - Precise Answer ✔✔an opposite The antenna used to compare the gain of other antennas is called a: - Precise Answer ✔✔dipole The component that effectively becomes a short when turned on, and is turned off by disconnecting the path from the anode to cathode is the: - Precise Answer ✔✔silicon controlled rectifier Which of these terms would you most expect to see when referring to types of resistors? - Precise Answer ✔✔metal film "microwave" as used in radio electronics, refers to: - Precise Answer ✔✔1 GHz - 100 GHz radio frequencies

A differential amplifier whose two input signals are equal, but 180 degrees out of phase, will have an - Precise Answer ✔✔maximum output signal Which of these can be used to control the output level of a generator? - Precise Answer ✔✔small DC voltage applied to the field winding Impedance(Z, in ohms) includes: - Precise Answer ✔✔Resistance, capacitive reactance and inductive reactance The velocity factor in an RF transmission line is determined by: - Precise Answer ✔✔the dielectric material between the center conductor and shield A fuse, marked 250V, 650 ma can be used in circuits with an "open- fuse" supply voltage of: - Precise Answer ✔✔125 volts A thermistor: - Precise Answer ✔✔changes resistance with temperature When a transformer is designed, what most determines the output voltage from the secondary? - Precise Answer ✔✔The ratio of primary to secondary turns Adding armature windings in parallel to a generator's existing windings:

  • Precise Answer ✔✔improves its voltage stability

A 10W signal is received at 5W. How many dB loss? - Precise Answer ✔✔3 dB loss It is desired to raise the power to a speaker from 15W to 30. This is a: - Precise Answer ✔✔3dB increase Which of these IC or semiconductor devices normally requires the most careful handling to avoid damage by static electricity? - Precise Answer ✔✔CMOS Which of these components most closely compares to the output of a solar cell? - Precise Answer ✔✔A NiCad battery Three series inductors have values of 20mh, 30mh and 40mh respectively total inductance is: - Precise Answer ✔✔90mh Phototransistors: - Precise Answer ✔✔can be sensitive to invisible light To simplify the following of an electrical signal path through circuitry you could: - Precise Answer ✔✔use a block diagram AC power outlet strips with surge suppressors will include at least one: - Precise Answer ✔✔MOV

Connecting 3 capacitors of .05uf, 20uf and 40uf in series results in a total capacitance of: - Precise Answer ✔✔.0498uf You would use the formula(Lt = L1+L2+L3): - Precise Answer ✔✔To find the total inductance in a series circuit The fifth color band on a 5% resistor is yellow. This tells you: - Precise Answer ✔✔its failure rate VHF or UHF antennas don't use waveguides as feed lines because: - Precise Answer ✔✔the large dimensions at these wavelengths make other trans lines more practical. To trace a logic path, you might use: - Precise Answer ✔✔A logic pulser Ordinary alpha numeric information transmitted by a computer is converted to binary using: - Precise Answer ✔✔an encoder In electronic devices what term refers to residual magnetism? - Precise Answer ✔✔Hysteresis Some variable capacitors are made so the plates interleave. The capacitance varies as the plates open(separate) and close. As they open: - Precise Answer ✔✔The capacitance decreases

In VOM's voltage multiplier resistors are important: - Precise Answer ✔✔in the voltage scales In a series tuned circuit, to increase the resonant frequency, you would need to: - Precise Answer ✔✔decrease the inductance A mosfet: - Precise Answer ✔✔amplifies signal voltage variations Torroid cones are used in transformers for: - Precise Answer ✔✔concentrating the magnetic lines of flux A PLL or phase locked loop circuit, contains a VCO, or voltage controlled oscillator. The output of the VCO is an: - Precise Answer ✔✔AC changing frequency signal A variable capacitor depends on: - Precise Answer ✔✔the plate separation being adjustable While anode and cathode voltages are maintained the gate level in an SCR drops below the trigger point. What happens? - Precise Answer ✔✔The SCR stays on The combination of resistance and reactance which restricts the flow of alternating current is called: - Precise Answer ✔✔Impedance

The output of a thermocouple would most likely be measured in: - Precise Answer ✔✔millivolts The Z axis on an oscilloscope is: - Precise Answer ✔✔intensity When soldering transistor or IC chip legs. What should be used to prevent overheating of the small discrete components/ - Precise Answer ✔✔heat sink clip Which of the below would normally be used for the core of a transformer? - Precise Answer ✔✔Ferrite The '1' in binary number 100000 carries a weight of: - Precise Answer ✔✔ 32 You would choose an LCD if you needed: - Precise Answer ✔✔a low current digital display Germanium diodes: - Precise Answer ✔✔normally drop about .3V with forward current RF signal propagation that is normally considered "live of sight" would be: - Precise Answer ✔✔UHF