BEE - Comprehensive

  1. How many basic types of filter circuits are there?
    4
  2. What percent of a half-wave rectifier is the ripple frequency of a full-wave rectifier?
    200%
  3. What is one of the most commonly used filters primarily used in radio receivers, small audio amplifier power supplies, and in any type of power supply where the output current is low and the load current is relatively constant?
    LC capacitor-input filter
  4. Which type of diode blocks current until a specified voltage is applied?
    Zener diode
  5. What is a short-circuit protection device that automatically limits the current to a safe value?
    Current Limiter
  6. Which type of device has two or more diodes arranged so that load current flows in the same direction during each half cycle of the ac supply?
    Full-wave rectifier
  7. What is current called that flows in pulses in the same direction?
    Pulsating DC
  8. Most power supplies are made up of the following four basic sections: transformer, rectifier, filter, and what else?
    Regulator
  9. What steps up or steps down the input line voltage and isolates the power supply from the power line?
    Transformer
  10. What converts the alternating current input signal to a pulsating direct current?
    Rectifier
  11. What maintains the output of the power supply at a constant level in spite of large changes in load current or input line voltages?
    Regulator
  12. What provides two equal voltages to the conventional full-wave rectifier?
    Center-tapped transformer
  13. What is the conversion of an alternating current to a pulsating direct current?
    Rectification
  14. Which terms are AC voltages normally specified in?
    RMS values
  15. What is defined as the time it takes a capacitor to charge to 63.2 percent of the applied voltage or to discharge to 36.8 percent of its total charge?
    One time constant
  16. Which circuitry provides a constant current output?
    Current regulator
  17. What is the most basic type of power supply filter?
    Capacitor filter
  18. What are used primarily to develop high voltages where low current is required?
    Voltage multipliers
  19. Which type of filter is primarily used in power supplies where voltage regulation is important and where the output current is relatively high and subject to varying load conditions?
    LC choke-input
  20. The DC output of the voltage multiplier ranges from 1000 to how many volts?
    30,000
  21. Electrolytic capacitors are available in sizes up to how many microfarads or greater?
    10,000
  22. What are the two widely used checks in testing electronic equipment?
    Signal tracing and Visual
  23. 115 volts AC can vary from about 105 volts AC to how many volts AC?
    125
  24. What gives an indication of how much the output voltage changes over a range of load resistance values?
    Figure of merit
  25. Basic voltage regulators are classified as one of what two ways?
    Series or Shunt
  26. In order for a silicon NPN transistor to conduct, the base must be between how many volts more positive than the emitter?
    0.6 to 0.7 volts
  27. What is a basic tool used to solve electrical problems?
    Algebra
  28. What is the basic unit of power?
    Watt
  29. Wirewound resistors are made in values between 5 and how many watts?
    200
  30. How many watts are required to equal one horsepower?
    746
  31. Which type of circuit contains only one path for current flow?
    Series
  32. Which law states that "The algebraic sum of the voltage drops in any closed path in a circuit and the electromotive forces in that path is equal to zero."?
    Kirchhoff’s voltage law
  33. What is an arbitrarily chosen point to which all other points in the circuit are compared?
    Reference point
  34. Which type of circuit has more than one current path connected to a common voltage source?
    Parallel
  35. The equivalent resistance of a parallel circuit is always less than the resistance of any what?
    Branch
  36. What are installed in equipment circuits to prevent damage caused by increases in current?
    Fuses
  37. What are emf sources that would tend to force current in opposite directions said to be?
    Series opposing
  38. Which term represents a quantity so large it cannot be measured?
    Infinity
  39. Which type of current does not flow through any of the load devices?
    Bleeder
  40. Which term is used to denote a common electrical point of zero potential?
    Ground
  41. When resistors with wattage ratings greater than how many watts are needed, wirewound resistors are used?
    5
  42. Who proved by an experiment that a precise relationship exists between current, voltage, and resistance?
    George Simon Ohm
  43. Which type of current regularly changes direction?
    Alternating
  44. What is frequency always measured and expressed in?
    Hertz
  45. What is the time required to complete one cycle of a waveform called?
    Period
  46. What is the distance from zero to the maximum value of each alternation called?
    Amplitude
  47. What is the amount by which one sine wave leads or lags another sine wave measured in?
    Degrees
  48. What is the maximum value reached during one alternation of a sine wave called?
    Peak Value
  49. The average value of a sine wave of voltage or current is the average of all the instantaneous values during one alternation. The average value is equal to what amount of the peak value?
    0.636
  50. How many times the peak value is the effective value of a sine wave?
    0.707
  51. What is the amplitude of direct current in a wire when a coulomb of electrons moves past a point in a wire in one second and all of the electrons are moving in the same direction?
    One ampere
  52. Which type of current is practically used by all modern commercial electric power companies?
    Alternating
  53. Which type of device can step up or down alternating voltages amplitudes?
    Transformer
  54. Which type of patterns are plotted on graph paper that result from changes in amplitude with respect to time?
    Waveform
  55. What is the most commonly used means for producing or using electricity?
    Magnetism
  56. What year did Hans Christian Oersted discover a definite relationship between magnetism and electricity?
    1819
  57. Which conductor rule can the relation between the direction of the magnetic lines of force around a conductor and the direction of electron current flow in the conductor be determined?
    Left-Hand rule
  58. Which unit indicates one cycle per second?
    Hertz
  59. What is the number of complete cycles of alternating current or voltage completed each second referred to as?
    Frequency
  60. What is the distance along the waveform from one point to the same point on the next cycle called?
    Wavelength
  61. What is formed by wire wound around a core?
    Coil
  62. How many maximum or AC peak values during each complete cycle of AC are there?
    2
  63. What is the effect called when a conductor is in a magnetic field and either the field or the conductor moves, an emf (voltage) is induced in the conductor?
    Electromagnetic induction
  64. What are alternating voltage and current usually expressed in?
    Effective values
  65. Which alternating voltage or current value is the value of voltage or current at one particular instant?
    Instantaneous
  66. What is the value of alternating voltage or current that will have the same effect on a resistance as a comparable value of direct voltage or current will have on the same resistance?
    Effective
  67. Which method is the rate at which heat is produced in a resistance form a convenient basis for establishing an effective value of alternating current known as?
    Heating effect
  68. Which law states that current is directly proportional to the applied voltage?
    Ohms law
  69. What are two sine waves that are precisely in step with one another said to be?
    In phase
  70. Which type of elements are resistors, lamps, and heating elements examples of?
    Resistive
  71. Which type of temporary storage device is used to store data, memory addresses, and operation codes?
    Register
  72. Which type of register can the contents be shifted one or more places to the left or right?
    Shift register
  73. Which term means that the data is moved along a single line one bit at a time?
    Serial transfer
  74. What is the feature known as when the output of one logic circuit can be used as the input to another logic circuit?
    Compatibility
  75. What is an example of the law of absorption?
    A·(A+B) = A or A+(AB) = A
  76. Which type of logic gate is a logic circuit that requires all inputs to be TRUE at the same time in order for the output to be TRUE?
    And
  77. Which type of logic device has an output opposite of the input?
    Inverter
  78. Which gate is simply an AND gate with an inverter (NOT gate) at the output?
    NAND
  79. What is an example of idempotent law?
    AA = A, A+A = A
  80. What is an example of the law of intersection?
    0 (A·1 = A, A·0 = 0)
  81. What is defined as the science of reasoning?
    Logic
  82. What is a term that is TRUE in one part of an expression will be TRUE in all parts of the expression?
    Law of identity
  83. Which type of voltage is used to represent the logic 1 state of a statement?
    Logic polarity
  84. Which law is defined as the order in which terms are written does not affect their value (AB =BA, A+B = B+A)?
    Commutative law
  85. What will be used to illustrate all possible input and corresponding output combinations?
    Truth table
  86. What are the "decision-making" circuits of computers and other types of digital equipment?
    Logic gates
  87. What is an example of Associative law?
    A(BC) = ABC or A+(B+C) = A+B+C
  88. Who developed Boolean Algebra?
    George Boole
  89. What is an example of the law of union?
    (A+1 = 1, A+0 = A)
  90. What is a description of the input conditions necessary to get the desired output?
    Boolean expression
  91. What is an example of distributive law?
    A+(BC) = (A+B) · (A+C)
  92. Which gate is a modified OR gate that produces a HIGH output when only one of the inputs is HIGH?
    Exclusive OR
  93. Which type of bistable device changes state on command from a common input terminal?
    Toggle
  94. What is the most widely used FF because of its versatility?
    J-K FF
  95. What is a timing signal generated by the equipment to control operations?
    Clock
  96. The frequency stability of the astable multivibrator can be increased by applying what to the circuit?
    Trigger pulse
  97. What allow functions involving more than one operation to be completed during a single clock cycle?
    Multiphase clocks
  98. What do most modern high-speed equipment use as the basis for their timing networks?
    Crystal-controlled oscillators
  99. What is defined as a loop of bistable devices (flip-flops) interconnected in such a manner that only one of the devices may be in a specified state at one time?
    Ring counter
  100. Which term means to change the magnitude of a number?
    Scaling
  101. What are groups of logic circuits that are based on particular types of elements (resistors, transistors, and so forth)?
    Logic families
  102. What are combinations of logic gates that combine binary values to obtain a sum?
    Adders
  103. Which circuit can add two binary digits but will not produce a carry?
    Quarter adder
  104. What may be used to store data temporarily, to multiply or divide, to count operations, or to receive and transfer information?
    Flip-flops
  105. What is designed to combine two binary digits and produce a carry?
    Half adder
  106. Subtraction is accomplished in computers by the R’s complement and what other method?
    ADD
  107. What is the total number of counts or stable states a counter can indicate called?
    Modulus
  108. Which term is used to describe the count capability of counters?
    Modulo
  109. Which term means that the events (setting and resetting of FFs) occur one after the other rather than all at once?
    Asynchronous
  110. High-frequency operations require that all the FFs of a counter be triggered at the same time to prevent errors. Which type of counter is used for this type of operation?
    Synchronous
  111. Which term means that each bit of data is moved on its own line and that all bits transfer simultaneously?
    Parallel transfer
Author
Coreyk58
ID
359015
Card Set
BEE - Comprehensive
Description
Updated