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Subelement B-005

B-005

Section B-005-001

Section B-005-001

If a dial marked in megahertz shows a reading of 3.525 MHz, what would it show if it were marked in kilohertz?

  • 3 525 000 kHz
  • 352.5 kHz
  • Correct Answer
    3 525 kHz
  • 35.25 kHz

Mega is a million, kilo is a thousand. A megahertz is a thousand kilohertz. Converting from megahertz to kilohertz, from large units to smaller, requires more digits, the decimal point moves to the right by three positions, a thousand times more.

Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.

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If an ammeter marked in amperes is used to measure a 3000-milliampere current, what reading would it show?

  • Correct Answer
    3 amperes
  • 0.003 amperes
  • 0.03 amperes
  • 0.3 amperes

Milli is a thousandth. A thousand milliamperes is one ampere. Converting from milliamperes to amperes: from small units to larger units, requires fewer digits, the decimal point moves to the left by three positions, a thousand times less.

Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.

Tags: none

How many hertz is 1 kHz?

  • Correct Answer
    1 000 Hz
  • 10 Hz
  • 100 Hz
  • 10 000 Hz

"k" is the abbreviation of kilo. Kilo is a thousand. Converting from kilohertz to hertz: from large units to smaller units, requires more digits, the decimal point moves to the right by three positions, a thousand times more.

Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.

Tags: none

How many microfarads is 1 000 000 picofarads?

  • 0.001 microfarads
  • Correct Answer
    1 microfarad
  • 0.01 microfarads
  • 10 microfarads

Pico is a millionth of a millionth, micro is a millionth. Converting from picofarads to microfarads: from small units to larger units, requires fewer digits, the decimal point moves to the left by SIX positions, a MILLION times less.

Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.

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If you have a hand-held transceiver that puts out 500 milliwatts, how many watts would this be?

  • 5 watts
  • Correct Answer
    0.5 watts
  • 0.05 watts
  • 50 watts

A thousand milliwatts is one watt. Converting from milliwatts to watts: from small units to larger units, requires fewer digits, the decimal point moves to the left by three positions, a thousand times less.

Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.

Tags: none

A kilohm is:

  • 0.1 ohms
  • 0.001 ohms
  • 10 ohms
  • Correct Answer
    1000 ohms

Kilohm is a thousand ohms. Converting from kilohm to ohms: from large units to smaller units, requires more digits, the decimal point moves to the right by three positions, a thousand times more.

Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.

Tags: none

How many megahertz is 7040 kHz?

  • 70.40 MHz
  • 0.740 MHz
  • 0.074 MHz
  • Correct Answer
    7.040 MHz

Mega = million. "k" is the abbreviation of kilo. Kilo is a thousand. Converting from mega to kilo: from large units to smaller units, requires more digits, the decimal point moves to the right by three positions, a thousand times more.

Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.

Tags: none

A current of one quarter ampere may be written as:

  • 250 microamperes
  • 0.25 milliamperes
  • Correct Answer
    250 milliamperes
  • 2.5 milliamperes

One quarter ampere is 0.25 amperes. Milli is one thousandth. One ampere is a thousand milliamperes. Converting from ampere to milliampere: from large units to smaller units, requires more digits, the decimal point moves to the right by three positions, a thousand times more.

Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.

Tags: none

How many millivolts equal two volts?

  • 0.000 002 mV
  • 0.002 mV
  • Correct Answer
    2 000 mV
  • 2 000 000 mV

A millivolt is a thousandth of a volt. A volt is one thousand millivolts. Converting from volts to millivolts: from large units to smaller units, requires more digits, the decimal point moves to the right by three positions, a thousand times more.

Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.

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How can a frequency in megahertz be stated in gigahertz?

  • Correct Answer
    Divide by 1 000
  • Multiply by 1 000
  • Divide by 1 000 000
  • Multiply by 1 000 000

Mega is a million, giga is a thousand millions. Converting from megahertz to gigahertz: from units to larger units, requires fewer digits, the decimal point moves to the left by three positions, a thousand times less.

Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.

Tags: none

How many millihenries equal 10 000 microhenries?

  • 1000 millihenries
  • 100 millihenries
  • 1 millihenry
  • Correct Answer
    10 millihenries

Micro is a millionth, milli is a thousandth. Converting from microhenries to millihenries: from small units to larger units, requires fewer digits, the decimal point moves to the left by three positions, a thousand times less.

Original copyright; explanations transcribed with permission from Francois VE2AAY, author of the ExHAMiner exam simulator. Do not copy without his permission.

Tags: none

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