T5B-2010: Math for electronics; decibels, electronic units and the metric system
T5B01:
How many milliamperes is 1.5 amperes?
1,500 milliamperes
15 milliamperes
150 milliamperes
15,000 milliamperes
T5B02:
What is another way to specify a radio signal frequency of 1,500,000 hertz?
1500 kHz
1500 MHz
15 GHz
150 kHz
T5B03:
How many volts are equal to one kilovolt?
One thousand volts
One one-thousandth of a volt
One hundred volts
One million volts
T5B04:
How many volts are equal to one microvolt?
One one-millionth of a volt
One million volts
One thousand kilovolts
One one-thousandth of a volt
T5B05:
Which of the following is equivalent to 500 milliwatts?
0.5 watts
0.02 watts
5 watts
50 watts
T5B06:
If an ammeter calibrated in amperes is used to measure a 3000-milliampere current, what reading would it show?
3 amperes
0.003 amperes
0.3 amperes
3,000,000 amperes
T5B07:
If a frequency readout calibrated in megahertz shows a reading of 3.525 MHz, what would it show if it were calibrated in kilohertz?
3525 kHz
0.003525 kHz
35.25 kHz
3,525,000 kHz
T5B08:
How many microfarads are 1,000,000 picofarads?
1 microfarad
0.001 microfarads
1000 microfarads
1,000,000,000 microfarads
T5B09:
What is the approximate amount of change, measured in decibels (dB), of a power increase from 5 watts to 10 watts?
3 dB
2 dB
5 dB
10 dB
T5B10:
What is the approximate amount of change, measured in decibels (dB), of a power decrease from 12 watts to 3 watts?
6 dB
1 dB
3 dB
9 dB
T5B11:
What is the approximate amount of change, measured in decibels (dB), of a power increase from 20 watts to 200 watts?
10 dB
12 dB
18 dB
28 dB
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