PLC chapter 2

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  1. method of representing negative numbers in binary, whereby the negative representation is derived by inverting each bit from right to left, but only after detecting the first bit that is a 1
    two's complement
  2. In binary representation of both positive and negative numbers, this term refers to the most-significant bit
    sign bit
  3. a seven bit binary code used to represent a standard character set to allow communication and data transfer between digital devices
    ASCII
  4. method of representing negative numbers in binary, whereby the negative representation of a number is derived simply by inverting each bit - that is changing each one to a zero and each zero to a one
    one's complement
  5. The left-most position of a binary number
    most-significant bit
  6. Name given to the fixed numeric value given to each position of a number so that a number of any size can be expressed by whatever the number system
    place value
  7. term given to the right half of a 16-bit word
    least-significant byte
  8. A four-bit code, by which each decimal digit from 0 through 9 is represented by its binary equivalent. This coee provides a method that allows decimal numbers to be input to or output from a digital system
    binary coded decimal
  9. this number format which allows representation of a very large and very small numbers, consists of two parts - the mantissa and the exponent
    floating-point numbers
  10. A binary code, similar to BCD, in which only one bit changes and the number is incremented. This code is used in positioning decoders where positioning accuracy is required
    gray code
  11. This term refers to a grouping of eight binary digits
    byte
  12. The term given t the left-half of a sixteen bit word
    most-significant byte
  13. A grouping of sixteen binary digits, or two or more butes
    word
  14. name of the number system based on the number two
    binary
  15. the name given t each position or digit of a binary number
    place value
  16. an ordered scheme whereby a fixed set of symbols is used to represent numeric values
    ASCII
  17. term given to the right-most position of a binary number
    least-significant bit
  18. number system based on the number eight
    octal
  19. in each number system, the number that determines the total number of counting symbols used
    base number or radix
  20. number system based on the number sixteen
    hexadecimal
  21. a grouping of 32-bits
    double-word
  22. The BJT switch should be designed to work with the ____ hFE.
    minimum
  23. In cut-off, the BJT collector-emitter voltage (Vce) is
    high
  24. The transistor output characteristic curves have constant
    Ib
  25. For a transistor there are input, output and transfer characteristic curves. The _____ transfer characteristic curves may be most useful in switch design.
    output
  26. In saturation, the BJT collector-emitter voltage (Vce) is
    minimum
  27. The transistor output characteristic curves show ___ on vertical axis.
    Ic
  28. In saturation, the BJT is fully
    on
  29. In saturation, the BJT collector current (Ic) is
    maximum
  30. The transistor output characteristic curves show ___ on horizontal axis.
    Vce
  31. In cut-off, the BJT is fully
    off
  32. The rule of thumb for designing the base resistor for a 2N3904 switch is to use hFE=____.
    20
  33. If the transistor is biased into the linear region, it will be used as
    an amplifier
  34. In cut-off, the BJT base current is
    zero
  35. In cut-off, the BJT collector current (Ic) is
    zero
  36. One way to design for a power transistor is allow ___ more base current than you actually need, to make sure the device remains saturated.
    5x
  37. In both cut-off and saturation, _____ power is dissipated in the transistor.
    minimum
  38. In saturation, the BJT base current is
    maximum
  39. If the transistor is biased into saturation or cut-off, it will be used as
    a switch
  40. A bipolar junction transistor (BJT) can be used in many circuit configurations; as an amplifier, oscillator, filter rectifier or just used as a
    switch
  41. For use as a switch, the BJT operates in the regions of the output curves called
    saturation and cut-off

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Author:
lacythecoolest
ID:
328045
Filename:
PLC chapter 2
Updated:
2017-02-06 16:33:54
Tags:
engineering plc
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Description:
chapter 2 quiz
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