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
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
