Biomedical Equipment Technician (BMET) CDC Set A Volume 3 Practice Exam

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• What is the total resistance of 10Ω, 20Ω, and 25Ω resistors connected in parallel?
• What groups of elements are doped into semiconductors to create impurities?
• In a circuit with a source voltage of 45 volts and a resistance of 5 ohms, what is the circuit's current in amperes?
• What component in a circuit is primarily responsible for limiting current flow?
• What is the fundamental principle that allows a transformer to operate?
• What type of documentation is crucial for tracking maintenance on medical devices?
• What is the primary function of a Zener diode?
• What electrical safety feature can help reduce the risk of electrocution in medical devices?
• Which type of circuit allows for different voltage and current values from a single supply voltage?
• What is the relationship between current, voltage, and resistance in a circuit?
• What advantage does the usage of test points provide?
• Which type of flip-flop has the simplest form and is used to store one bit of data?
• What principle does impedance spectroscopy rely on?
• Which stage of a DAC determines the reference voltage or current that appears at the output?
• What characteristic of the complementary metal-oxide-semiconductor (CMOS) makes it suitable for battery-powered equipment?
• Which component in ultrasound equipment is responsible for generating sound waves?
• For positive logic, what is the minimum signal level necessary to activate an OR gate?
• What does "forward bias" indicate regarding voltage in semiconductors?
• In a series circuit with resistors R1, R2, and R3 each rated at 20 ohms and an applied voltage of 180 volts, what is the current in amperes through R2?
• What combination of both number and letter designation would be used to identify a diode and semiconductor device?
• If the current is 3 amperes and the resistance is 45 ohms, what is the applied voltage in volts?
• In a reverse-biased PN junction diode, what happens to the holes and electrons at the junction?
• The process of creating a magnetic field through current is termed?
• Which device has two base leads?
• The total voltage applied to a voltage divider is equal to the?
• The transistor amplifier with characteristics of low input impedance and high output impedance is the common?
• What does a grounding wire do in medical equipment?
• If a transformer has a turns ratio of 3:1 and a primary voltage of 120 volts, what will be the secondary voltage?
• Which flip-flop is considered the main component in digital counters?
• An alternating-current generator converts which form of energy into electrical energy?
• Connecting capacitors in parallel causes the plate area to:
• What is used to ensure the credibility of your troubleshooting sequence?
• What type of electrical wave is primarily utilized in a standard EEG machine?
• Which type of biomedical device is often subject to rigorous testing before approval?
• What is a common indicator of electrical equipment malfunction?
• What occurs in a series direct-current (DC) motor when the load increases?
• What is the purpose of a multiplexer in digital circuits?
• What ensures that timing signals are synchronized in digital circuitry?
• What is the power delivered to a circuit if the current is 2 amperes and the voltage is 10 volts?
• What is the major distinguishing feature among the octal, decimal, and binary systems?
• What is the main purpose of service records in a biomedical context?
• Which state describes a Wheatstone bridge that has equal voltages across the two branches?
• What type of information is typically included in a medical device's technical manual?
• Which regulatory standard is primarily concerned with electrical safety in medical devices?
• Which component of a pressure sensor converts pressure to an electrical signal?
• What are the two basic types of optical coupled devices?
• Which is a common sterilization method for medical instruments?
• How does increasing the turns ratio of a transformer affect the voltage?
• What materials are preferred for BI testing to ensure effective sterilization?
• Which device measures blood pressure non-invasively?
• Which type of shift register can operate in all serial and parallel input/output combinations?
• Which characteristic is essential for items used as biological indicators?
• The transistor amplifier configuration which produces a 180° out of phase output from the input signal is the common?
• Where does the majority of current flow in a transistor with both the emitter-base and collector-base circuits connected?
• What is the main advantage of preventive maintenance in biomedical equipment?
• Which transistor configuration is known for providing the highest input impedance?
• Which imaging technique utilizes magnetic fields and radio waves for diagnostic purposes?
• What does the term “in-service training” refer to?
• Which of the following is an example of work not being done?
• What is the primary function of an alternating-current generator?
• What tool is typically used to measure electrical current?
• Which value is considered the most important for a sine wave?
• The binary numbering system uses which base?
• What is the total conductance, measured in Siemens, of a circuit containing a 10Ω and a 20Ω resistor connected in parallel?
• What feature do numbering systems use to denote the position of digits?
• In what way should medical equipment be stored to prevent damage?
• Compute the total capacitance in microfarads (μF) of a parallel circuit containing two capacitors: 5 μF and 10 μF.
• Which of the following is an effect of mutual induction?
• Which capacitor type is polarized?
• In a transformer with a turns ratio of 1:4 and primary voltage of 20 volts, what is the secondary voltage?
• What is the primary function of an autotransformer?
• Resistors are classified primarily by which two characteristics?
• Collector current flow in a transistor is changed by varying the bias in the?
• A sine wave's peak is measured at 30 volts. What is its peak-to-peak value?
• What is the function of an electrosurgical unit?
• Which factor is considered most critical when choosing a replacement part for biomedical equipment?
• In the field of metrology, what does the acronym "NIST" stand for?
• What is the primary risk associated with miscalibrated infusion pumps?
• What mechanical property is crucial for materials used in surgical instruments?
• Total electrical energy expended in an electrical circuit can be defined as the product of which two factors?
• What could result from a defective battery in a medical device?
• What is the main purpose of the Joint Commission in healthcare?
• How frequently should medical lasers be inspected for safety?
• What does the acronym "ISO" stand for in the context of medical device standards?
• Why is it crucial to adhere to manufacturer specifications during equipment repair?
• When a silicon controlled rectifier's (SCR) anode and cathode are reversed biased, a trigger pulse applied on the gate will cause it to?
• What is the specific function of a Schmitt trigger?
• What is the primary advantage of the hexadecimal number system over the binary system?
• In a digital logic circuit, which voltage level pair appropriately represents negative logic?
• The resolution of an analog-to-digital converter (ADC) is based on what?
• An open in a parallel branch causes a circuit's total resistance to what?
• What is the term for when two coils are positioned close enough for their magnetic fields to interact?
• If both inputs are provided simultaneously to an RS latch flip-flop, what is the result?
• What device takes multiple input signals and mixes them into a fewer number of outputs?
• What kind of power supply is commonly used in laboratory equipment?
• What is the resistance level characteristic of a short circuit?
• What type of analysis involves assessing the risks associated with using a medical device?
• What are flip-flops primarily used for in digital circuitry?
• What does "reprocessing" refer to in the context of medical devices?
• If the voltage across the load is 20 volts and the current is 4 amperes, what is the power delivered to the load in watts?
• What does the term "biocompatibility" refer to?
• Most voltage measurements used to check proper circuit operation in electronic equipment are taken with respect to which reference point?
• What is the primary responsibility of a Biomedical Equipment Technician (BMET)?
• To achieve a high output from an exclusive OR gate with more than two inputs, what is required?
• In which section of a transistor does the input signal typically control the output?
• What is the equivalent resistance of six 120-ohm resistors connected in parallel?
• What is the decimal equivalent of binary 11001100?
• What type of current does a DC motor utilize?
• What is the power delivered to the load if the current is 4 amperes and the load resistance is 4 ohms?
• The term "common collector" in transistor configuration is synonymous with what other term?
• If an alternating current sine wave repeats itself 500 times in 1/5 of a second, what is its frequency in hertz (Hz)?
• Which factor does not affect capacitance?
• Which of the following configurations leads to maximum sensitivity in an OP AMP?
• What does "end-user training" entail?
• What is the primary purpose of a closed loop operational amplifier (OP AMP) configuration?
• In differential mode, what does an operational amplifier (OP AMP) amplify?
• What is one key performance criterion for ultrasound transducers?
• Which type of biomedical equipment requires specialized handling due to radiation?
• Which amplifier configuration allows for voltage gain greater than one?
• A series circuit consists of three resistors with voltage readings of 40V, 80V, and 100V. What is the total source voltage?
• Which regulatory body is responsible for overseeing medical device safety and effectiveness in the United States?
• What is the typical range of frequencies used in ultrasound imaging?
• The sum of the power absorbed by all loads in a voltage divider equals the?
• What are the two possible states of a Wheatstone bridge circuit?
• Convert binary 0111 to its decimal equivalent.
• What are the three important features of numbering systems?
• In a simple capacitor, the plate area is two square inches, the dielectric material is air, and the distance between the plates is 0.01 inch (0.254 mm). To increase the capacitance, you should:
• What is typically checked during an equipment inventory audit?
• What does "biomedical instrumentation" encompass?
• Which type of safety device is commonly used for preventing electrical overload?
• Impedance spectroscopy is particularly useful in which field?
• What is the circuit resistance in ohms if the applied voltage is 48 volts and the current is 0.5 amperes?
• How is electrical power generally measured in circuits?
• Compute the total capacitance in microfarads (μF) of a series circuit containing two capacitors: 5 μF and 10 μF.
• What troubleshooting step is eliminated if there is a visual indicator that has lit up?
• In a defibrillator, what is the purpose of the paddles or pads?
• What is the basic unit of inductance?
• What is the main function of a demultiplexer?
• What is the primary function of a manometer in medical applications?
• In the context of a DAC, what does the term "scaling" refer to?
• A capacitor has a capacitance of one farad (F) if it stores one coulomb of charge when connected across an electromotive force (EMF) of:
• What type of circuit connection is characterized by resistors arranged so that they provide only one path for current?
• Hexadecimal numbers are typically preceded by which symbol?
• What does a pulse oximeter measure?
• What is an undesirable characteristic of a Zener diode?
• What happens to the armature in a DC motor when resistance is added to the circuit?
• During a functional inspection of a ventilator, which parameter is essential to evaluate?
• What is the main function of a patient monitor in a clinical setting?
• What does the term "biohazard" refer to in the context of biomedical equipment?
• What can increase the strength of the magnetic field from an electromagnet?
• In a voltage divider, the total resistance is represented by which element?
• How are photosensitive devices classified?
• What is the octal equivalent of binary 110011?
• Which factor directly affects the amount of current flowing in a circuit?
• Which number represents the binary equivalent of octal 766?
• What does PM stand for in the context of biomedical equipment maintenance?
• Which OP AMP configuration provides a voltage gain of 1?
• In which mode does an OP AMP exhibit its high stability characteristics?
• In what manner must a transistor be biased to conduct current flow?
• In a parallel circuit, if one branch opens, the current through that branch will?
• Capacitance is the ability of an electrical circuit or device to:
• In a three-branch parallel circuit with resistors rated at 4Ω, 5Ω, and 6Ω, the current is highest through which resistor?
• Which of the following is the most predominant general-purpose linear integrated circuit?
• Which agency enforces regulations on medical device manufacturing in the U.S.?
• In a closed circuit, what must be true about the sum of voltages?
• Which of the following describes a key function of biomedical instrumentation?
• What phenomenon is observed when the voltage drop across resistors in a series circuit is equal to the total source voltage?
• What tool would a BMET use to measure electrical current?
• What type of signal is typically output from a thermocouple?
• What type of biological response is of risk when using implantable devices?
• What is the function of the clock signal in digital circuitry?
• What is the role of the Center for Devices and Radiological Health (CDRH)?
• In an up-counter, which flip-flop is incremented by one when a trigger is applied?
• What voltage range is considered invalid by transistor-transistor logic (TTL)?
• Why is it important to maintain accurate logs of equipment maintenance?
• What tool is used to test the insulation integrity of electrical equipment?
• How often is preventive maintenance typically performed on critical medical equipment?
• When performing an electrical safety test, what aspect is crucial to assess?
• What is a key characteristic of an autotransformer?
• The fractional and whole part of a number in the binary system are separated by the?
• The output voltage of a digital-to-analog converter (DAC) can be as large as what?
• Who does not establish the frequency of equipment preventive maintenance (PM)?
• The unit of electrical conductance is measured in?
• What is the role of a biological indicator in sterilization?
• What is the minimum number of resistors needed to create a series-parallel circuit?
• Which benefit does a properly managed preventive maintenance (PM) program provide?
• Which voltage should a typical clinical equipment power supply provide?
• Which semiconductor device requires an external trigger pulse for operation?
• What does a circle (negation symbol) on the output of a gate represent in positive logic?
• Which of the following is an example of a critical care device?
• What device protects a circuit from excessive current?
• Which three types of direct-current motors are fundamental?
• What is the purpose of calibration in biomedical equipment?
• What type of circuit requires at least one closed loop to function correctly?
• What is the most important step when troubleshooting equipment?
• What is the proper term for the network of inputs in a differential amplifier?
• What is the best practice for connecting medical equipment to avoid ground loops?
• Which section of the FDA regulations outlines medical device quality system requirements?
• What numbering system is primarily used by digital computers?
• The transistor amplifier with high input impedance, low output impedance, and current gain of less than one is the common?
• When servicing a sterilizer, which component is critical to inspect for proper operation?
• Which operational amplifier configuration is typically used to isolate stages in a circuit?