Term
| How does voltage behave in a parallel circuit? |
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Definition
| Voltage is equal across each branch. |
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Term
| How does current behave in a parallel circuit? |
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Definition
| The total circuit current is equal to the sum of the individual branch circuits. |
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Term
| How does resistance behave in a parallel circuit? |
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Definition
| The total resistance in a parallel circuit is less than any of the individual resistances. |
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Term
| How do like poles behave? |
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Definition
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Term
| How do unlike poles behave? |
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Definition
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Term
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Definition
| A material that is easily magnetized. |
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Term
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Definition
| A material that is somewhat magnetic. |
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Term
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Definition
| A material that tends to be non-magnetic. |
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Term
| What is the "Left-Hand Rule"? |
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Definition
| If you were to place your left hand onto a conductor with the thumb pointing in the direction of electron flow, your curved fingers would signify the direction of the force of the flux. |
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Term
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Definition
| An energy field created by a magnet. |
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Term
| How can you create a stronger magnetic field force with the same amount of current? |
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Definition
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Term
Complete this sentence:
The amount of magnetic field force generated is __________ to the number of turns in the coil multiplied by the current. |
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Definition
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Term
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Definition
| Magnetomotive force: any physical driving (motive) force that produces magnetic flux. |
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Term
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Definition
| Electromotive force: refers to voltage generated by a battery or by the magnetic force according to Faraday's Law, which states that a time varying magnetic field will induce an electric current. |
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Term
| What is electromagnetic induction? |
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Definition
| The production of electrical current across a conductor moving through a magnetic field. |
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Term
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Definition
| A device that transfers electrical energy from one circuit to another through inductively coupled conductors—the transformer's coils. |
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Term
| What constitutes a transformer? |
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Definition
| At least 2 coils in close proximity that creates a mutual inductive condition. |
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Term
| What is mutual inductance? |
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Definition
| The magnetic field flux generated by a coil induces a voltage in an adjacent coil. |
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Term
| What is a "step-up" transformer? |
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Definition
| The turn ratio is lower on the primary source side and higher on the secondary load side. This in effects steps up the voltage but steps down the current. |
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Term
| What is a "step-down" transformer? |
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Definition
| The turn ratio is higher on the primary source side and lower on the secondary load side. This in effects steps down the voltage but steps up the current. |
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Term
| What is the relationship between voltage to wire-turnings? |
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Definition
Secondary voltage # of turns on secondary
———————— = ——————————
Primary voltage # or turns on primary
Sutituting symbols for the above words:
Vs Ns
—— = ——
Vp Np
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Term
| What are the 3 transformer formula equations that are important to understand? |
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Definition
Vs Ns
—— = ——
Vp Np
VpIp = VsIs
Is Np
—— = ——
Ip Ns |
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Term
| How does a transformer work in a DC circuit? |
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Definition
| It doesn't! Transformers are considered an AC device and can only work with alternating currents. |
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Term
| What is an electrocardiogram? |
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Definition
| Commonly referred to as either EKG or ECG is a computerized machine that uses electrodes at specific locations on the body can measure electrical activity of the heart and graph the representation. |
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Term
| What can an EKG tell you? |
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Definition
| Whether the heart's electrical activity is normal. Non-normal EKG indicates one or more heart-related conditions. (Caution: Conditions that are not heart conditions can also cause changes in the EKG) |
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Term
| What are some non-heart condtions that may alter an EKG? |
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Definition
| CNS diseases Hypothermia Electrolyte abnormalities Esophageal disorders Pulmonary Embolism Drug related conditions |
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Term
[image]
UNDERSTAND THE CELL MAKE-UP, OPERATION, AND RATE OF THE NORMAL CONDUCTION PATHWAY. ALSO UNDERSTAND WHAT IS AN ARRHYTHMIA AND WHAT CAN CAUSE ONE. |
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Definition
A. SA Node
B. AV Node
C. Bundle of HIS
D. Left Bundle Branch
E. Right Bundle Branch
F. Left Anterior Division
G. Purkinje Fibers
H. Left Posterior Division
I. Bachman's Bundle
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Term
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Definition
| Electrodes are placed on the body at specific locations |
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Term
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Definition
| Adhesive patches that consist of silver and silver chloride gel |
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Term
| How does an electrode work? |
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Definition
| It contains an electrode and an electrolyte. the reaction (involving metal ions) causes the electrolyte to acquire a positive charge while the electrode acquires a negative charge. The potential difference creates an electric current. |
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Term
| What is the process from signal detection to signal acquisition? |
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Definition
Aquire, Amplify, Filter, Process
[the signal] |
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Term
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Definition
A. Signal
B. Transducer
C. Amplifier
D. Filter
E. Low Pass Filter
F. Analog Signal Processor
G. A/D Converter
H. Analog Display, Recorder, Storage
I. D/A Converter
J. CPU
K. Analysis
L. Digital Display, Printer, Storage |
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