23 3-50. In a simple shunt voltage regulator, what is the purpose of the shunt element?   1.     To regulate voltage through series resistance R_S   2.    To regulate voltage through parallel resistance V1   3.    To regulate current through series resistance R_S   4.     To regulate current through parallel resistance V1 3-51. In an electron tube voltage regulator, the electron tube replaces which of the following components?   1.    Variable resistor R_V   2.    Parallel resistor R_P   3.    Series resistor R_S   4.    Load resistor R_L 3-52. The primary purpose of the amperite regulator is to regulate   1.    power   2.    voltage   3.    current   4.    resistance 3-53. What method is used by a manufacturer of electronic equipment to reduce the cost of extensive wiring?   1.   Grounding the output of the power supply to the chassis   2.   Grounding the return side of the power transformer to the chassis   3.   Connecting all components in parallel   4.   Connecting all components in series 3-54. When working on electronic equipment, the technician should observe which of the following safety precautions?   1.   Make certain that the electronic equipment is properly grounded   2.   Make certain that the test equipment is properly grounded   3.   Make certain that the rubber mats are in good condition   4.   All of the above 3-55. Which of the following is/are the most widely used check(s) for testing electronic equipment?   1.    Smoke   2.    Visual   3.    Signal tracing   4.    Both 2 and 3 above 3-56. Any connection that is located close to the chassis or any other terminal should be examined for the possibility of which of the following problems?   1.    A short   2.    An open   3.    A low resistance   4.    A high resistance 3-57. What is the condition of a transformer that is discolored or leaking?   1.    Operational   2.    Shorted   3.    Cracked   4.    Open