Transformers Basics Quiz
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Questions and Answers

What are the two types of coils found in a transformer?

  • Primary and Auxiliary
  • Primary and Tertiary
  • Primary and Direct
  • Primary and Secondary (correct)

    • The transformer core is primarily made of plastic sheets.

    False

    What physical principle do transformers operate on?

    electromagnetic induction

    The movement of the magnetic flux generates an electromotive force in the ______ winding.

    <p>secondary</p> Signup and view all the answers

    Match the parts of a transformer with their function:

    <p>Core = Provides a path for magnetic flux Primary Winding = Receives electric voltage Secondary Winding = Delivers transformed voltage Insulation = Prevents electrical short circuits</p> Signup and view all the answers

    What is the main function of power transformers?

    <p>To vary the voltage while maintaining power</p> Signup and view all the answers

    Step-down transformers increase the output voltage relative to the input voltage.

    <p>False</p> Signup and view all the answers

    In a step-up transformer, which winding has more turns?

    <p>secondary winding</p> Signup and view all the answers

    A step-down transformer has more turns in the ______ winding than in the secondary winding.

    <p>primary</p> Signup and view all the answers

    Match the type of transformer with its description:

    <p>Power Transformer = Maintains power while varying voltage Step-up Transformer = Increases output voltage Step-down Transformer = Decreases output voltage Voltage Transformer = Not a standard type</p> Signup and view all the answers

    What is the primary function of a high voltage generator?

    <p>To release electrons from the cathode filament</p> Signup and view all the answers

    The high voltage transformer is responsible for the low voltage circuit in the generator.

    <p>False</p> Signup and view all the answers

    Name one component that acts as an electrical insulator in a high voltage generator.

    <p>Oil</p> Signup and view all the answers

    The high voltage generator releases electrons from the _______ due to incandescence.

    <p>cathode filament</p> Signup and view all the answers

    Match the components of the high voltage generator with their functions:

    <p>Autotransformer = Increases output power Low voltage transformer = Supplies power to the filament Rectifiers = Converts AC to DC Oil Filled Cavity = Acts as an electrical insulator</p> Signup and view all the answers

    What is the primary purpose of a rectifier?

    <p>To convert alternating current into direct current</p> Signup and view all the answers

    Diodes allow electric current to flow in both directions.

    <p>False</p> Signup and view all the answers

    What device is primarily used to achieve rectification?

    <p>diodes</p> Signup and view all the answers

    Electrons are accelerated from the cathode to the ______ to create X-rays.

    <p>anode</p> Signup and view all the answers

    Match the following terms with their definitions:

    <p>Rectification = The process of converting AC to DC Diode = An electronic device that allows current to flow in one direction Anode = The electrode where electrons are collected Cathode = The electrode from which electrons are emitted</p> Signup and view all the answers

    What happens to the secondary voltage in a high voltage transformer compared to the primary voltage?

    <p>It is higher than the primary voltage</p> Signup and view all the answers

    Transformers can operate with both alternating current (AC) and direct current (DC).

    <p>False</p> Signup and view all the answers

    In what unit is the secondary voltage of a high voltage transformer measured?

    <p>kilovolts peak (kVp)</p> Signup and view all the answers

    The primary current of a transformer is measured in _____ and the secondary current is measured in _____

    <p>amperes (A), milliamperes (mA)</p> Signup and view all the answers

    Match the following terms with their corresponding descriptions:

    <p>Primary Voltage = Measured in volts (V) Secondary Voltage = Measured in kilovolts peak (kVp) Primary Current = Measured in amperes (A) Secondary Current = Measured in milliamperes (mA)</p> Signup and view all the answers

    What is the purpose of the secondary connections on an autotransformer?

    <p>To adjust and control the output voltage</p> Signup and view all the answers

    An autotransformer can only decrease voltage, not increase it.

    <p>False</p> Signup and view all the answers

    What are the primary connections of an autotransformer labeled in the diagram?

    <p>A and A'</p> Signup and view all the answers

    The autotransformer can increase the voltage to approximately _____ the input voltage.

    <p>twice</p> Signup and view all the answers

    Match the connections of the autotransformer with their functions:

    <p>A = Input power connection C = Increases voltage E = Decreases voltage A' = Input power connection</p> Signup and view all the answers

    What is the primary purpose of electric measurement transformers?

    <p>To vary high voltages or intensities for safe measurement</p> Signup and view all the answers

    Electric measurement transformers can measure both current intensity and voltage potential.

    <p>True</p> Signup and view all the answers

    What type of transformer is designed to handle three-phase systems?

    <p>Three-phase transformers</p> Signup and view all the answers

    Which of the following is NOT an external component of the RX tube?

    <p>Rotating Piece</p> Signup and view all the answers

    Electric measurement transformers use a high-voltage primary winding and a __________ secondary winding.

    <p>low-voltage</p> Signup and view all the answers

    Match the function to the type of electric measurement transformer:

    <p>Current transformer = Measures current intensity Potential transformer = Measures voltage potential Three-phase transformer = Handles three-phase power systems Voltage divider = Reduces voltage to a manageable level</p> Signup and view all the answers

    The X-rays are generated externally in the RX tube.

    <p>False</p> Signup and view all the answers

    What is the primary material used for the rotating anode in the RX tube?

    <p>Tungsten</p> Signup and view all the answers

    The ______ emits the electrons necessary for producing X-rays.

    <p>Cathode</p> Signup and view all the answers

    Match the components of the RX tube with their functions:

    <p>Anode = Target for electron interaction Electron Cloud = Collection of emitted electrons Filament = Heats up to emit electrons Glass Housing = Encases the internal structure</p> Signup and view all the answers

    What is the maximum frequency at which a synchronizing timer is designed to rotate its shaft?

    <p>60 revolutions per second</p> Signup and view all the answers

    Electronic timers are less precise than mA timers.

    <p>False</p> Signup and view all the answers

    What device automatically ends exposure once the needed radiation intensity is reached?

    <p>Automatic Exposure Control</p> Signup and view all the answers

    An mA timer monitors the product of mA and exposure time and ends exposure when the desired ______ value is reached.

    <p>mA</p> Signup and view all the answers

    Match the following timer types with their descriptions:

    <p>Synchronizing Timer = Uses an electric motor for synchronization at 60 revolutions per second Electronic Timer = Allows a wide range of selectable time intervals with high precision mA Timer = Ends exposure when the desired mA value is reached Automatic Exposure Control = Measures radiation reaching the image receptor and stops exposure accordingly</p> Signup and view all the answers

    What is the primary function of the timer circuit in an X-ray system?

    <p>To activate and deactivate the high voltage across the X-ray tube</p> Signup and view all the answers

    An automatic safety clock can allow continuous exposure of a patient for more than six seconds.

    <p>False</p> Signup and view all the answers

    What does mAs represent in radiographic exposure?

    <p>milliampere-seconds</p> Signup and view all the answers

    The timer circuit is typically found in the ______ equipment of the high-voltage transformer.

    <p>primary</p> Signup and view all the answers

    Match the component with its function in radiographic exposure:

    <p>mA = X-ray tube current Automatic safety clock = Limits exposure time Timer circuit = Controls high voltage activation High-voltage transformer = Increases voltage for X-ray production</p> Signup and view all the answers

    Study Notes

    High Voltage Generator Components

    • The device has a high voltage transformer
    • The device also has a low voltage transformer for the filament circuit
    • The device also has a high voltage transformer for the cathode-anode circuit
    • Rectifiers are in the high voltage circuit
    • Oil in the device acts as an electrical insulator

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    Description

    Test your knowledge about transformers, their types, and functions with this quiz. You'll explore key concepts such as step-up and step-down transformers and their components. Perfect for students looking to deepen their understanding of electrical engineering principles.

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