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TSA Basic Knowledge for Electrical Applications Copy
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Gravity
Terms in this set (91)
Current
What is 'I'
Voltage
What is 'E'
Resistance
What is 'R'
Watts
What is 'W'
George Simon Ohm
Who discovered Resistance
R x I
Equation for Voltage
V / I
Equation for Resistance
V / R
Equation for Current
W / I
Equation for Voltage with watts
V x I
Equation for Watts
W / V
Equation for Current with Watts
Conductor under certain cercumstances
Semi-Conductor
Conducts Electricity easily
Conductor
Resists or controls the current of Electricity
Resistor
Timer
555 Chip is a What?
Ground ( negative -)
1 on a 555 chip does what?
Trigger, it starts the timer or circuit
2 on a 555 chip does what?
Outputs, pulses out of the chip
3 on a 555 chip does what?
resets, stops all operation to reset then has to wait till pin 2 triggers again to start the timer.
4 on a 555 chip does what?
Controls volatage, it sends elctricity to a 10-.5uf capacitor to control the volage flow.
5 on a 555 chip does what?
Threshold, When voltage on the timing capacitor rises above .66vvc it resets the output pin.
6 on a 555 chip does what?
Discharge, provides a path from the timing capacitor when discharge is low.
7 on a 555 chip does what?
Provides positive charge (+) or Vcc
8 on a 555 chip does what?
There is no Chip 9 on a normal 555 chip.
What does pin 9 on a 555 chip do?
positive supply voltage
What is Vcc
A capacitor to control the time electricity leaves the 555 Chip.
What is the Timer Capacitor on a 555 chip
0, 1
What is black on a resistor Chart, what is its multiplier.
1, 10
What is brown on a resistor Chart, what is its multiplier.
2, 100
What is red on a resistor Chart, what is its multiplier.
3; 1,000
What is orange on a resistor Chart, what is its multiplier.
4; 10,000
What is Yellow on a resistor Chart, what is its multiplier.
5; 100,000
What is green on a resistor Chart, what is its multiplier.
6; 1,000,000
What is blue on a resistor Chart, what is its multiplier.
7; 10,000,000
What is violet on a resistor Chart, what is its multiplier.
8, no multiplier
What is grey on a resistor Chart, what is its multiplier.
9, no mutiplier
What is white on a resistor Chart, what is its multiplier.
no number, .1
What is gold on a resistor Chart, what is its multiplier.
no number, .01
What is silver on a resistor Chart, what is its multiplier.
Red, brown, green blue, violet, grey, gold, silver
what colors have a tolerance
+1 %
What is the tolerance of Brown
+2 %
What is the tolerance of Red
+.5 %
What is the tolerance of green
+.25 %
What is the tolerance of Blue
+.10 %
What is the tolerance of Violet
+.05 %
What is the tolerance of Grey
+5 %
What is the tolerance of Gold
+10 %
What is the tolerance of Silver
The Omega Symbol
What is the ohm symbol
Silicon-Controled Retrifier
What does SCR stand for
is a solid state switching device which can provide fast, infinitely variable proportional control of electric power. A semiconductor device that functions as an electrically controlled switch.
What does a SCR do
A diode is a discrete component that allows current to flow in one direction only. + to -
What does a diode do
Light Emmiting Diode
What does LED stand for
- and +
Cathode is __ and Anode is __
Positive
What is 'P' in a PNP os NPN transistor
Negative
What is 'N' is a PNP os NPN transistor
Emmiter Base Collector
What is the symbol for a PNP transistor
Collector Base Emitter
What is the Symbol for a NPN transtors
Current flows from Emitter to Collector but the base controls the flow.
How does a PNP transistor work
It works as an amplifier or switch
What does a transistor do
Current flows from Collector to Emitter but the base controls the flow.
How does a NPN transistor work
A PNP and a NPN connected the first 'P is PNP is the positive and the last N in NPN is negative, the last P is PNP is the middle P in NPN is connected to form the base. Or just a diode with a gate.
What is an SCR layout
A Chart for the Voltage, Current, Resistance, and Power
What does a EIRP Chart do
Watts (SI unit)
What is Power
International System of Units
What is SI
Stephen Gray
Who discovered conductace
Benjamin Franklin
Who dicovered Current
Hans Oersted
Who discovered the solenoid
A coil of wire with a current that acts as a bar magnet or an electromagnet
What is a Solenoid
the magnetic field of an activated solenoid has positive and negative poles that will attract or repel material sensitive to magnets. In a solenoid, the electromagnetic field causes the piston to either move backward or forward, which is how motion is created by a solenoid coil.
What does a solenoid do
Alessandro Volta
Who discovered Voltage
André-Marie Ampère
Who discovered Amperes
Ground
Symbol
Capacitor
symbol
Circuit Breaker
Symbol
Restistor
Symbol
LED
Symbol
Diode
Symbol
555 chips
Symbol
SCRs
Symbol
NPN
Symbol
PNP
Symbol
Battery
Symbol
Negative
Symbol
Positive
Symbol
The power consumption at a rate of one watt per hour
What are watt hours
The measure of 1000 watts. In a kilowatt hour there are roughly 1000 watts per hour.
What are Kilowatts
An electical current which periodically switches directions. Wall sockets use alternating current and run at 60 hertz in the U.S.
What is alternating current (AC)
An electrical current that flows one way. For example, battery cells in flashlights use Direct Current
What is direct current (DC)
15 volts
Find E when the resistance is 5 ohms and the current is 3 amps
0.09 amps, or 90 miliamps
Find I when the voltage is 9 volts and when the resistance is 100 ohms
0.55 ohms
Find R when the voltage is 5.5 volts and the current is 100 miliamps. ( Remember, 1 miliamp equals 0.001 amps and 1 amp equals 1,000 miliamps
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Verified questions
ENGINEERING
A 25 Ω resistor and a 10 mH inductor are connected in parallel. This parallel combination is also in parallel with the series combination of a 30 Ω resistor and a 10 μF capacitor. These three parallel branches are driven by a sinusoidal current source whose current is 125 sin(2500t + 60°) A. a) Draw the frequency-domain equivalent circuit. b) Reference the voltage across the current source as a rise in the direction of the source current, and find the phasor voltage. c) Find the steady-state expression for ν(t).
ENGINEERING
Motion of the bar is controlled by the constrained paths of A and B. If the angular velocity of the bar is 2 rad/s counterclockwise as the position is passed, determine the speeds of points A and P.
ENGINEERING
In the metal processing industry, heat treatment of metals is commonly done using electrically heated draw batch furnaces. Consider a furnace that is situated in a room with surrounding air temperature of $30^\circ C$ and an average convection heat transfer coefficient of $12 W/m^2 \cdot K.$ The furnace front is made of a steel plate with thickness of 20 mm and a thermal conductivity of $25 W/m \cdot K.$ The outer furnace front surface has an emissivity of 0.23, and the inside surface is subjected to a heat flux of $8 kW/m^2.$ Determine the outside surface temperature of the furnace front.
ENGINEERING
Two smooth disks A and B each have a mass of 0.5 kg. If both disks are moving with the velocities shown when they collide, determine their final velocities just after collision. The coefficient of restitution is e=0.75.