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16 Cards in this Set
- Front
- Back
- 3rd side (hint)
What is rectification
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The process of changing AC to pulsating DC
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A. Supresses the negative phase of the sine wave
B. Inverting the negative sign of the sign of the sine wav |
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What are the 2 types of rectification
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Self rectification- X-ray tube
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Solid State Rectificaftion- Diode
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What is a capacitator
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A device capable of accumulating and storing an electric charge
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1. Works by applying direct current
2. Must be charge to operate 3. Usually charged by a battery 4. Used in mobile radiography |
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What are autotransformer
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Portions of the same winging acts as part of both the primary and secondary winding
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What are the 3 types of transformer loss
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1. Copper Loss- Resistance to current flow that is found in all conductors
2. Hysteresis Loss- Minimized by using silicon iron |
3. Eddy Current Loss- Minimized by using laminated core
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What are the 4 types of transformer cores
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1. Air core
2. Open core 3. Closed core 4. Shell type |
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What are the 2 types of transformers
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1. Step-up transformer- Increases voltage and decreases amp
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2. Step-down transformer- Decreases voltage and increases amp
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What are the components of transformers
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1. Two coils of a wire with soft iron cores
2. Sources of AC attached to one wire |
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What does transformer do
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Work on the principle of electromagnetic mutual induction
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All transformers work on AC to provide establishing, collapsing, and reestablishing of magnetic field
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What is the basic theory of motors
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Convert electrical energy to mechanical energy`
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Define Armature
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Loop of wire
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What is a tectifier
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Changing AC to DC before gettingt to x-ray tube
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AC going into rectifier and coming out as DC
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What is a half wave rectificaftin
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Half waves uses 1 diode 1/60 sec
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What is a full wave rectificaftin
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Full waves uses 4 diodes 1/120 sec
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What is the purpose of a semiconductor
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Allows flow of electrons in one direction, it is done by n-p junction
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Why do we use a galvometer
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A scale used to work kv and mas meters
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