Standard Units
Physical Concepts of Energy
Physical Concepts of Energy
Is anything which occupies space and has inertia
What is matter?
An elementary positive particle with a mass of about 1.67 x 10-24 g
What is a proton?
The flow of electrons
What is current?
A material called that will attract small pieces of iron
What is a magnet?
The type of transformer has more coils in the secondary than in the primary
What is a step up transformer?
Oragnized and classified knowledge
What is science?
The type of bonding that involves the sharing of electrons
What is a covalent bond?
The unit for resistance
What is the ohm?
The two poles on a magnet
What are north and south?
When a current is induced in a secondary coil by simply changing the current in the primary
What is mutual induction?
The ability to do work
What is energy?
The smallest subdivision of a element having the characteristics properties of that element
What is an atom?
This surrounds every electrical current
What is a magnetic field?
The magnetic lines called that surround a magnet
What are flux lines
The type of transformer core is most widely used in radiographic equipment
What is closed core?
Converts chemical energy to mechanical energy
What is a gasoline engine?
The highest bonding energy of an atom is found in the electron's ________ shell.
What is the K-shell?
A coil of wire with a current
What is a solenoid?
The materials called that are weakly attracted to a magnet
What is a paramagnet?
Tapping windings of the autotransformer to supply voltage to the step-up transformer
What is an autotransformer?
An object at rest will remain at rest unless acted on by an external force
What is Newton's 1st law of motion
Cannot be created or destroyed, it only changes form
What is the Law of Conservation of Energy?
This device is used to transmit alternating current from a generator
What are slip rings?
Materials that are difficult to magnetize and demagnetize
What is retentivity?
Swirling currents called that are induced in transformers and produce heat losses
What are eddy currents?