ABRET Board Exam Questions And Answers |Latest 2025 | Guaranteed Pass.

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ABRET Board Exam Questions And Answers
|Latest 2025 | Guaranteed Pass.


The basic unit for measuring current flow is
A. atomic weight
B. Coulomb
C. Volt

D. Ampere - Answer✔D. Ampere
The basic unit of resistance
A. Ohm
B. Coulomb
C. Ampere

D. Volt - Answer✔A. Ohm
Which of the following is not a valid expression of Ohm's law?
A. R=EI or (R=VI)
B. E=IR or (V=IR)
C. I= E/R or (I=V/R)

D. R= E/I or (R= V/I) - Answer✔A. R=EI or (R=VI)
Which of the following is not a unit for measuring alternating frequencies
A. Cycles per second
B. Volts
C. Hertz

D. Kilocycles - Answer✔B. Volts
Which of the following describes the action of a capacitor?

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A. opposes changes in current flow
B. Converts alternating current to direct current
C. Creates a direct current resistance

D. Stores energy - Answer✔D. Stores energy
A circuit that allows some frequencies to pass through it, while others are blocked is a...
A. Resistor
B. Transistor
C. Filter

D. Reactor - Answer✔C. Filter
A combination of electronic components designed to increase the power, voltage, or current of
a signal
A. Amplifier
B. Line filter
C. Master gain control

D. Sensitivity - Answer✔A. Amplifier
A small fluctuating output recorded by the EEG instrument even when there is no input signal is
called...
A. output voltage
B. Linear Distortion
C. 60Hz interferance

D. Noise - Answer✔D. Noise
The EEG amplifier is designed so that when input 1 is more negative than input 2 the deflection
will be...
A. downward
B. upward
C. absent

D. sinusoidal - Answer✔B. Upward
Common mode rejection is...
A. The ability of an amplifier to cancel out ECG artifact


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B. The characteristics of an amplifier that rejects external interference
C. is dependent on the sampling rate

D. Controlled by the 60- cycle notch filter - Answer✔B. The characteristics of an amplifier that
rejects external interference
Which of the following is most attenuated by a low frequency filter of 1 Hz
A. 0.5 Hz
B. 5.0 Hz
C. 10.0 Hz

D. 0.1 Hz - Answer✔D. 0.1 Hz
Time constant is defined as the time required...
A. for the deflection to fall (decay) to 47% of the peak deflection
B. for the deflection to fall (decay) 57% of the peak deflection
C. for the deflection to fall (decay) 67% of the peak deflection

D. for the deflection to fall (decay) to 67% of the peak deflection - Answer✔D. for the deflection
to fall (decay) to 67% of the peak deflection
An EEG record has 3/sec spike & wave discharges. Both the spike and the slow wave have
voltages of 100uV. If this discharge is recorded with a LFF of 5Hz and a sensitivity of 10uV/mm,
what would be the deflection of the spike and the wave?
a. spike 10mm & wave 6mm
b. spike 6mm & wave 10mm
c. spike 10mm & wave 10mm

d. spike 6mm & wave 6mm - Answer✔a. spike 10mm & wave 6mm
A high frequency setting of 35 Hz would attenuate 50 Hz muscle activity by approximately what
percentage
A. 10%
B. 20%
C. 40%

D. 100% - Answer✔C. 40%
The filters creating a very narrow band pass that should rarely be used clinically are
A. LF 5.0 Hz and HF 70 Hz

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