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Associate CET Study Guide: Electronics Practice Exam Questions and Answers, Exams of Electrical and Electronics Engineering

A valuable set of practice exam questions and answers for the associate cet exam, covering various aspects of electronics. it's useful for students preparing for certification or those seeking to enhance their understanding of fundamental electronics concepts. The questions test knowledge of components, circuits, and signal properties, making it a practical resource for self-assessment and study.

Typology: Exams

2023/2024

Available from 05/05/2025

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The Associate CET Study Guide: 2024
AST Practice EXAM 2: Appendix A
Rated A+
A track on a computer removable disk is:
A. One record
B. Divided into sectors
C. Created as data written
D. One continuous path โœ”โœ”B. Divided into sectors
In PC type computers, extended memory is:
A. Memory above the basic 640 K
B. Memory above the basic 1 Megabyte
C. Added to basic RAM in 1mb blocks
D. Adjusted by the start up files โœ”โœ”B. Memory above the basic 1 Megabyte
Which video system has the highest resolution?
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Download Associate CET Study Guide: Electronics Practice Exam Questions and Answers and more Exams Electrical and Electronics Engineering in PDF only on Docsity!

The Associate CET Study Guide: 2024

AST Practice EXAM 2: Appendix A

Rated A+

A track on a computer removable disk is:

A. One record

B. Divided into sectors

C. Created as data written

D. One continuous path โœ”โœ”B. Divided into sectors

In PC type computers, extended memory is:

A. Memory above the basic 640 K

B. Memory above the basic 1 Megabyte

C. Added to basic RAM in 1mb blocks

D. Adjusted by the start up files โœ”โœ”B. Memory above the basic 1 Megabyte

Which video system has the highest resolution?

A. EGA

B. VGA

C. SVGA

D. XVGA โœ”โœ”D. XVGA

You would want to use a dual trace oscilloscope to measure:

A. Signal differences between two points

B. Suspected resistance problems in one circuit

C. One faulty circuit in voltage level while another is faulty in a current level

D. One fault is video and the other is audio โœ”โœ”A. Signal differences between two points

Common Intermediate Frequencies (IF's) for AM and FM commercial broadcast receivers are:

A. 455 kHZ and 1.2 GHz

B. 288 kHZ and 455 kHz

C. 455 kHz and 10.7 MHz

Standard line-level audio signals, such as the output from VCRs, DVD players, satellite receivers and set top boxes, for input to a TV, modulator or other equipment is of what amplitude?

A. 100 microvolts peak-to-peak

B. 1000 microvolts peak-to-peak

C. 1 millivolt peak-to-peak

D. 1 volt peak-to-peak โœ”โœ”D. 1 volt peak-to-peak

The noise level in a radio receiver is generated mostly in the:

A. IF stages

B. Local Oscillator

C. Audio section

D. RF section โœ”โœ”D. RF section

The charging rate for a NiCad or Ni-MH battery should not exceed __________% of its AHr, or ampere-hour rating.

A. 5

B. 100

C. 25

D. 10 โœ”โœ”D. 10

Which of these in a PC would be part of disk operations?

A. Serial port board

B. DMA ports

C. CGA controller

D. SATA or IDE controller โœ”โœ”D. SATA or IDE controller

An LED:

A. Only emits visible light when forward biased

B. Can be used as a fiber optic signal source

C. Does not need high current flow protection

D. May send or receive light signals โœ”โœ”B. Can be used as a fiber optic signal source

Which propagation condition would be significant for a UHF signal to be received at a distance of 500 miles?

A. Line-of-sight

B. Faraday rotation

C. Groundwave

D. Tropospheric ducting โœ”โœ”D. Tropospheric ducting

A three input NAND has two low inputs and one high input. The output is:

A. Low

B. High

C. Either high or low

D. Neither high or low โœ”โœ”B. High

Which of these would be considered a component of a "basic" power supply?

A. Feedback circuit

B. IC regulator with short circuit protection

C. Diode rectifier

D. Circuit breaker box โœ”โœ”C. Diode rectifier

A "Video Signal" is defined as:

A. Modulated RF

B. Baseband including sound information

C. Baseband including visual information

D. Broadband RF โœ”โœ”C. 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:

A. Should be disconnected

B. May be ignored

C. Should be discharged to chassis ground, through a suitable resistor

Which of these would be an important electrical consideration in the use of a transformer?

A. The operating frequency

B. Space requirements

C. Environmental temperatures

D. Number of laminations โœ”โœ”A. The operating frequency

If a 12v product is dissipating 50w, how much load resistance does the device represent?

A. .24 ohms

B. 24 ohms

C. 4.16 ohms

D. 2.9 ohms โœ”โœ”D. 2.9 ohms

An "Audio signal" is defined as:

A. Frequencies in the 20 Hz to 15,000 Hz range

B. Baseband including visual information

C. Frequencies above ultrasonic

D. Broadband RF โœ”โœ”A. Frequencies in the 20 Hz to 15,000 Hz range

__________ will cause a generator to produce DC voltage rather than AC.

A. Slip rings

B. Load

C. Armature loops

D. The commutator โœ”โœ”D. The commutator

You suspect the unit has an internal short,. To prevent further damage when you apply power, you should:

A. Short around the main fuse or breaker and proceed, watching for heat or arching

B. Replace the unit without attempting repairs, as it probably can't be repaired safely

C. Measure the resistance at the DC connectors and compare to factory specifications

D. There is no difference between the plates after charging begins โœ”โœ”A. Current is maximum at first, then reduces as the capacitor becomes charged

An electrolytic capacitor between the power transformer and the rectifiers in a power supply:

A. Protects the diodes from surges

B. Eliminates the need for filter capacitors

C. Is part of a voltage doubler circuit

D. Provides that earth ground be isolated from DC ground โœ”โœ”C. Is part of a voltage doubler circuit

Information travels through optic fiber via the flow of:

A. Protons

B. Lumens

C. Photons

D. Electrons โœ”โœ”C. Photons

You Would most likely prefer an analog VOM over a DMM for:

A. Intermittent fluctuations

B. Accuracy

C. Convenience

D. Safety โœ”โœ”B. Accuracy

Which of these circuits would most likely use a Zener diode?

A. A receiver 1 F section

B. A television tuner

C. A power regulator

D. A bridge rectifier โœ”โœ”C. A power regulator

A block in a digital diagram is called a NOR. Which is true?

A. It may also be called a NAND

B. It is a NOT OR or Inverted OR

A. The gate is turned on

B. At avalanche

C. It is forward biased

D. It is reversed biased โœ”โœ”C. It is forward biased

A Zener diode is rated 6.3 v. This tells you:

A. It conducts to limit the voltage across it to 6.3 v.

B. Requires 6.3 v gate voltage in order to turn on

C. Generates 6.3 v if activated by light

D. Regulates a power supply voltage at 6.3 v โœ”โœ”A. It conducts to limit the voltage across it to 6.3 v.

A Triac is frequently used:

A. For motor speed control

B. As a power supply rectifier

C. For power surge protection

D. To electronically turn equipment on and off โœ”โœ”D. To electronically turn equipment on and off

A technician must be knowledgeable about "ESD":

A. To be able to select the proper soldering device

B. Because voltage sensitive devices come in numerous sizes

C. In order that he will have the proper test equipment for them

D. Because static discharge can destroy many components โœ”โœ”D. Because static discharge can destroy many components

In a motor, the counter-emf voltage induced in the armature __________ the source current.

A. Adds to

B. Subtracts from

C. Does not affect

D. Is unaffected by โœ”โœ”B. Subtracts from

A. A klystron

B. An op-amp

C. An MOV

D. LCD's โœ”โœ”B. An op-amp

A transformer on a schematic has two leads connected to the primary and three to the secondary, one on each end and one in the middle. This is a/an:

A. Audio transformer

B. I F transformer

C. Center tapped secondary transformer

D. High voltage transformer โœ”โœ”C. Center tapped secondary transformer

The 9 pin DB9 connector serial port on a PC is commonly called the __________ standard.

A. Centronics

B. RS

C. DIN

D. USB โœ”โœ”B. RS

Three capacitors, of 470 pf, 560 pf and .47 pf are in parallel with each other. The total is:

A. .47 pf

B. 2.13 pf

C. 1030.47 pf

D. 1.03047 uf โœ”โœ”C. 1030.47 pf

Ohm's law provide equations relating to:

A. Volts, amps and resistance

B. Amps, joules and resistance

C. Decibels, resistance and volts

D. Power, emf and current โœ”โœ”A. Volts, amps and resistance

A power source such as a generator or battery might be compared to what component in a water supply system?