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34 Cards in this Set
- Front
- Back
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What is a conductor?
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Any material that transmits electricity
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What is a insulator?
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confine electricity to path from it's source to device being powered.
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What is the best electrical conductor?
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Silver
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What are circuits?
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formed by wires, appliances, and other devices. Device uses electricity to perform a task such as powering a lamb. (outlet)
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What is a load in a circuit?
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The current in a circuit.
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What is the pros and cons of best electrical conductor?
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Silver
Pros - it's lustrous, malleable, and much better than copper and almunium. Cons - it's bad against rust monsters. |
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What type of conductor do we use in industries majority of time?
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Silver
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What is the third type of conductor? Name pors and cons?
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Copper
Pros - easy to bend, yet toughen. connections are easy, it does not loose connections, rewiring is easy Cons - price, shock hazard, bonding |
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How wires are measured?
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wires are measured in AWG (American Wire Gauge)
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What factors should you consider when choosing a wire size?
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(1) safe current carrying capacity without overheating.
(2) keeping voltage loss to an acceptable minimum. |
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What is the white wire used for?
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Neutral
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What is the black wire used for?
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Hot Wire
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What is a red wire used for?
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Hot Wire
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What is the green wire use for?
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ground wire
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What is the function of bare wire?
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Ground wire
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Why do we insulate wires?
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To keep ourselves from getting electrocuted and so electricity won't transfer to other objects.
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What does GFCI?
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Ground-fault circuit interruptor
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Where are GFCI outlets used?
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used electrical devices near damp areas such as bathrooms, kitchen, and outside.
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Why do we use hydraulic power?
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To move heavy things like steering in a car, bucket on a tractor, control surfaces on a aircraft.
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Why does hydraulic work better than pneumatic?
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hydraulic provide more pressure, accuracy, cost
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When working with hydraulic cylinder what is the "stroke"?
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Stroke - total distance of travel of cylinder
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What is a piston in a cylinder?
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the portion of cylinder which hydraulic works against to generate force.
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What is seal on a piston?
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Designed to ensure that fluid does not leak between piston and bore.
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Why do you need to clean hydraulics connections?
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to keep dirt and contiments from raming the piston on the remote head
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What is the use of hydraulics?
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to move any object
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What is a grain leg?
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It carries grain to the top of silo and drops it into the silo
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What is a short circuit?
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It is lower resistance than a normal circuit typicall from unintended contact.
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What makes wires heat up?
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defects in appliances and too many electrical cords can cause wires to heat up.
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Why do you get shocked?
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When a person or object with too much electrons touch a negative than it causes a static between the two
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What is the law conservation?
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measureable property of isolated physical system
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What is watt?
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measure of electricity power
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What is a volt?
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unit which electrical pressure is measured with a volt meter.
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What different types of insulator?
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Plastic, rubber, and glass
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What is a circuit breaker?
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heat sensitive switch which trips when electrical demand is too high which causes it to get too hot
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