ABRET Board Exam 2023/ 125 Questions and
Answers/Graded A+
The basic unit for measuring current flow is
A. atomic weight
B. Coulomb
C. Volt
D. Ampere - -D. Ampere
-The basic unit of resistance
A. Ohm
B. Coulomb
C. Ampere
D. Volt - -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) - -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 - -B. Volts
-Which of the following describes the action of a capacitor?
A. opposes changes in current flow
B. Converts alternating current to direct current
C. Creates a direct current resistance
,D. Stores energy - -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 - -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 - -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 - -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 - -B. Upward
-Common mode rejection is...
A. The ability of an amplifier to cancel out ECG artifact
, 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 - -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 - -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 - -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 - -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% - -C. 40%
Answers/Graded A+
The basic unit for measuring current flow is
A. atomic weight
B. Coulomb
C. Volt
D. Ampere - -D. Ampere
-The basic unit of resistance
A. Ohm
B. Coulomb
C. Ampere
D. Volt - -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) - -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 - -B. Volts
-Which of the following describes the action of a capacitor?
A. opposes changes in current flow
B. Converts alternating current to direct current
C. Creates a direct current resistance
,D. Stores energy - -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 - -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 - -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 - -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 - -B. Upward
-Common mode rejection is...
A. The ability of an amplifier to cancel out ECG artifact
, 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 - -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 - -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 - -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 - -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% - -C. 40%
