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Subel. T5
13 questions
Subelement T5

ELECTRICAL PRINCIPLES

Section T5B

Math for electronics: conversion of electrical units, decibels

How many milliamperes is 1.5 amperes?

  • 0.0000015 milliamperes
  • 0.0015 milliamperes
  • Correct Answer
    1500 milliamperes
  • 1,500,000 milliamperes
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Which is equal to 1,500,000 hertz?

  • Correct Answer
    1500 kHz
  • 1500 MHz
  • 15 GHz
  • 150 kHz
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Which is equal to one kilovolt?

  • One one-thousandth of a volt
  • One hundred volts
  • Correct Answer
    One thousand volts
  • One million volts
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Which is equal to one microvolt?

  • Correct Answer
    One one-millionth of a volt
  • One million volts
  • One thousand kilovolts
  • One one-thousandth of a volt
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Which is equal to 500 milliwatts?

  • 5 watts
  • Correct Answer
    0.5 watts
  • 500,000 watts
  • 500,000,000 watts
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Which is equal to 3000 milliamperes?

  • 0.003 amperes
  • 0.3 amperes
  • 3,000,000 amperes
  • Correct Answer
    3 amperes
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Which is equal to 3.525 MHz?

  • 0.003525 kHz
  • 35.25 kHz
  • Correct Answer
    3525 kHz
  • 3,525,000 kHz
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Which is equal to 1,000,000 picofarads?

  • 0.001 microfarads
  • Correct Answer
    1 microfarad
  • 1000 microfarads
  • 1,000,000,000 microfarads
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Which decibel value most closely represents a power increase from 5 watts to 10 watts?

  • 2 dB
  • Correct Answer
    3 dB
  • 5 dB
  • 10 dB
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Which decibel value most closely represents a power decrease from 12 watts to 3 watts?

  • -1 dB
  • -3 dB
  • Correct Answer
    -6 dB
  • -9 dB
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Which decibel value represents a power increase from 20 watts to 200 watts?

  • Correct Answer
    10 dB
  • 12 dB
  • 18 dB
  • 28 dB
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Which is equal to 28400 kHz?

  • 28.400 kHz
  • 2.800 MHz
  • 284.00 MHz
  • Correct Answer
    28.400 MHz
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Which is equal to 2425 MHz?

  • 0.002425 GHz
  • 24.25 GHz
  • Correct Answer
    2.425 GHz
  • 242.5 GHz
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