ABRET Board Exam Questions and Answers Graded A+

ABRET Board Exam 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