PHYS 151 Fall 2021-Comprehensive Final-151 Final (answered) 100% Scored
Fall 2021-Comprehensive Final-151 Final 1. What effect does a step-up transformer have on voltage from the primary windings to the secondary windings? 2. The quantity used to define dose received based on the type of ionizing radiation is called _____________. 3. What type(s) of disturbances in space does electromagnetic create? (1) Electric (2) Magnetic (3) Mechanical 4. Electromagnetic radiation varies in terms of its: (1) Wavelength (2) Frequency (3) Velocity (speed) 5. The autotransformer operates on the principle of _________________? 6. In which of the following scenarios is ionizing radiation occurring? 7. Once ionization occurs, which portion of the ion pair is deemed the positive ion? 8. Refer to the operating console circuit diagram. What device is indicated by the umber 1? 9. What is the advantage of configuring a wire carrying electric current into a coil (spring)? 10. The electronic device that converts AC current to DC current is a: 11. What does the mA selector do in the x-ray system circuit? Please choose the best answer. 12. What form of natural environmental radiation accounts for the greatest source of human exposure to ionizing radiation? 13. What is the velocity of electromagnetic radiation? 14. What kind of energy represents the strength of attachment between the orbiting electrons and the nucleus? 15. What standard system of units has been adopted by all countries and is used in all branches of science? 16. What type of current flows back and forth in a sine curve fashion between a positive and negative direction? 17. What type of electric circuit connects all circuit elements in a line along the same conductor? 18. What type of electromagnetic device uses an electric current supplied to a system of stators that produce a magnetic field to promote the rotation of a rotor? 19. What device is labeled as number 7 in this x-ray circuit diagram? 20. Which electron shell is closest to the nucleus? 21. Which fundamental particle has a neutral charge? 22. Which of the following has the highest energy? UV Xrays 23. Which term accounts for the number of waves that pass a set point in a set amount of time? 24. Which wave characteristic refers to the height of a wave? 25. A closed circuit will conduct electricity True or False 26. A device for holding and storing charges of electricity is a 27. A transformer utilizes a. the principles of electromagnetic mutual induction b. the application of Ohm's Law 28. A type of variable resistor used in the x-ray circuit is called a 29. An electric current is due to the difference of potential between two points True or False 30.An insulator is a substance that conducts electric current. True or False 31. Cosmic rays, terrestrial radiation and radon are examples of 32. During ionization, the orbital electron and the atom from which it was separated are called 33. Electric current is described as going from positive to negative. This means, that actual electron flow is 34. Which of the following conditions facilitates electrification by induction? 35. Electrostatic force between two charges is _____________ proportional to the product of their quantities and ______________ proportional to the square of the distance between them. 36. Fuses and circuit breakers are incorporated within electrical circuits to prevent 37. Gamma rays are produced 38. How many electrons will the N shell (it is the 4th shell out of 7) have? 39. In a sine wave the distance from one peak to another is called the 40. In an x-ray circuit, which of the following are true: 1. kVp is controlled by the autotransformer and kVp selector 2. mA is controlled by the filament transformer and rheostat 3. rectification is controlled by the mA and kVp selector 1 Only 3 Only 1 and 2 only 1, 2, and 3 41. Ohm's law states that electric potential is the product of _____ and _____ 42. Periodic variations in voltage about a steady value defines (the variations of the voltage across the x-ray tube) (the variations of not maintaining a constant kVp) 43. If 240 volts is applied to a step-up transformer with 12 turns in the primary and 48 turns in the secondary, what is the output voltage? 44. A device that contains P type and N type material is called a 45. The ability of an element in a circuit to reduce or impede the flow of electricity defines 46. The concentration of charges on a curved surface of a conductor will be greatest 47. The control for the amount of filament current is directly related to the 48. The kVp meter of an x-ray generator is placed 49. The kVp meter of an x-ray generator displays __________. 50. The lines of force in space associated with a magnet are called 51. The phenomenon in which a current in one conductor induces a current to flow in another conductor defines 52. The process by which alternating current is converted into direct current is called 53. The purpose of the line compensator is to 54. Which timer has the patient as the variable? 55. The type of current found between the secondary side of the step up transformer and the rectifiers is 56. Which of the following is a state of energy? 57. The unit of electric potential is the 58. This image is demonstrating 59. To get electrons to flow along a conductor, there must be 60. Transformers can operate on either AC or DC voltage. True or False 61. The primary circuit is considered a low voltage circuit True or False 62. Using this diagram, which of the following statements is not true 63. Wavelength is______proportional to frequency 64.What are the two principal classes of ionizing radiation? 65. Where does the high-voltage portion of the X-ray circuit receive the voltage it needs to provide the kVp set by the radiographer? 66. Which component is labeled as number 6 in the x-ray circuit diagram? 67. Which of the following are factors used to describe the flow of electrons 1. Quantity 2. Force 3. Resistance 4. Direction of travel 1 and 2 only 2 only 2 and 3 only 1,2, 3, and 4 68. Which of the following in this image has the highest energy? 69. Which of the following is an SI unit of mass? 70. Which of the following is the appropriate unit of measure for velocity? 71. Based on the following figure, the atomic number of uranium is _____________. 72. Lithium's atomic mass number is 73. When are X-ray photons actually produced?
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phys 151 fundamentals of physics i mechanics and thermodynamics
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fall 2021 comprehensive final 151 final
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what effect does a step up transformer have on voltage from the primary windings to the seconda
