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ABRET (4) UPDATED ACTUAL Exam Questions and CORRECT Answers

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ABRET (4) UPDATED ACTUAL Exam Questions and CORRECT Answers The amount by which the differential amplifier increases the magnitude of the input signal is...? - CORRECT ANSWER - Sensitivity What is a device that alters the frequency composition of a signal? - CORRECT ANSWER - Filte

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  • February 9, 2025
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • ABRET
  • ABRET
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MGRADES
ABRET (4) UPDATED ACTUAL Exam
Questions and CORRECT Answers
The amount by which the differential amplifier increases the magnitude of the input signal is...? -
CORRECT ANSWER - Sensitivity


What is a device that alters the frequency composition of a signal? - CORRECT
ANSWER - Filter



High data sampling rates in a digital EEG Machine creates... - CORRECT ANSWER -
smooth, connected lines


Which of the following is not useful in digital EEG recordings? - CORRECT ANSWER -
Bio-calibration


Slow sampling rate may cause fast frequencies to appear slower, the term for this is...? -
CORRECT ANSWER - Aliasing



Digital EEG montages are reformatted by using... - CORRECT ANSWER - an average
reference


Clipping of the waveforms occurs when? - CORRECT ANSWER - the signal is outside
the range of the digitizer


What is voltage resolution? - CORRECT ANSWER - an analog-to-digital converter


What occurs when a signal common to both inputs when using a differential amplifier has like
frequencies, amplitudes, and phases are - CORRECT ANSWER - cancellation

, What kind of amplifier uses Common Mode Rejection? - CORRECT ANSWER -A
differential amplifier


In a differential amplifier, if input 1 receives a voltage of +50 µV and input 2 a voltage -100 µV,
the output voltage and deflection would be approximately...? - CORRECT ANSWER - 150
µV downward


The sharpness of the frequency response curve is determined by the filters - CORRECT
ANSWER - Roll-off


The amount by which the differential amplifier increases the magnitude of the input signal is
dependant on...? - CORRECT ANSWER - Sensitivity



A device that alters the frequency composition of a signal is...? - CORRECT ANSWER -
Filter


The ability of an amplifier to reject like signals is called...? - CORRECT ANSWER -
Common Mode Rejection


The basic unit for measuring current flow is...? - CORRECT ANSWER - Ampere



The basic unit of resistance is...? - CORRECT ANSWER - Ohm


Which of the following is not a unit for measuring alternating frequencies? - CORRECT
ANSWER - Volts



Which of the following describes the action of a capacitor? - CORRECT ANSWER -
Stores energy


A circuit that allows some frequencies to pass through it, while other are blocked is called a...? -
CORRECT ANSWER - Filter

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