Show:
Electromagnetism
Atoms
Transformers
Electricity and Circuits
Waves
100
The smallest unit of electrical charge is the _____.
What is electron.
100
What are the fundamental particles of an atom?
What is proton, electron,and neutron.
100
The operating console contains circuits that are _____. both high voltage and low voltage high voltage only low voltage only non-voltage
What is low voltage only.
100
The charges on an electrified object are distributed _____.
What is evenly throughout the object
100
The velocity of light is written as _____.
What is c = 3 x 10 to the 8th m/s
200
Rubber and glass are _____.
What is insulators.
200
The chemical element is determined by the number of _____ in the atom.
What is protons.
200
The _____ circuit provides electrons for the x-ray tube current.
What is filament.
200
An alternating (AC) current is represented by a _____ line.
What is sinusoidal.
200
The rate of rise and fall of a sine wave is called its _____.
What is frequency.
300
When a group of dipoles are aligned, they create a _____.
What is magnetic domain.
300
The binding energies, or energy levels, of electrons are represented by their _____.
What is shells.
300
What is the formula for the transformer law to calculate voltage?
What is Used to calculate voltage change Formula: Vs = Vp (Ns/Np) or Vs/Vp =Ns/Np Vs = Voltage in secondary winding Vp = Voltage in primary winding Ns = Number of turns in secondary winding Np = Number of turns in primary winding
300
Circuit devices that will conduct electrons in only one direction are: 1. resistors. 2. valve tubes. 3. solid-state diodes.
What is valve tubes and solid-state diodes.
300
A hertz (Hz) is equal to:
What is 1 cycle per second.
400
What is the SI unit of magnetic field strength?
What is tesla.
400
The atomic number of an element is symbolized by the letter _____.
What is Z
400
The secondary side of a transformer has 300,000 turns; the primary side has 600 turns. What is the turns ratio?
What is Turns ratio = Ns/Np Ns = 300, 000 Np = 600 300,000/600 = 500 Turns ratio = 500:1
400
Electrical power is measured in _____.
What is watts.
400
The lowest energy range of the electromagnetic spectrum is _____.
What is radio waves.
500
One tesla equals _________________ guass
What is 10,000.
500
The shell number of an atom is called the _____.
What is principal quantum number.
500
There are 125 turns on the primary side of a transformer and 90,000 turns on the secondary side. If 110 V AC is supplied to the primary winding, what is the voltage induced in the secondary winding?
What is Vs/Vp = Ns/Np x/110 = 90,000/125 9,900,000 = 125 x 9,900,000/125 = 79,200 V 79,200 V = 79.2 kV
500
In the United States alternating current goes through a complete cycle every _____ second.
What is 1/60.
500
Photons with the highest frequencies have the shortest _____.
What is wavelengths.