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15 Cards in this Set
- Front
- Back
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Analog Pros |
Battery is only needed for resistance measurements |
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Analog cons |
Draws a small amount of power from the source when measuring current |
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Digital Pros |
Easy to read measures AC an DC and is more accurate |
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Digital cons |
Difficult to observe rapid changes while making measurements requires batteries to operate |
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What must be done to measure resistance in a circuit |
Turn power off and remove one lead |
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What is the unit of measurement for current |
Amps |
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What is the unit of measurement for resistance |
Ohms |
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What is the unit of measurement for voltage |
E, volts |
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Convert 2500 milliamps to amps |
2.5 amps |
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Convert .350 Mega ohms to ohms |
350000 ohms |
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Describe the correct way to measure current |
Meter must be placed in series with the circuit with, digital meter plug black lead in to com and red lead into 10 amp set AC or DC, turn off power open the circuit connect leads in series then turn power back on to get measurements |
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What would be the result connecting ammeter to the terminals of a power supply |
It will damage the meter analog has no fuse protection digital has up to ten amp protection buy a fuse |
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What is necessary to induce a voltage in a piece of wire |
Magnetic lines of force and changing magnetic field |
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Describe the property of inductance |
An electrical conductor by which a change in current through it induces an EMF in both the conductor itself and in any nearby conductors by Mutual inductance |
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What type of Transformer would be used to prevent noise from being fed back to the line without changing voltage levels |
Isolation Transformer |
