Gas - Worksheets Flashcards
An atom has one of its electrons removed and becomes a charged particle known as an “ion”. What is the charge on this ion?
Positive.
What determines whether a material is going to be a good conductor or a good insulator?
Number of valence electrons.
Magnetism caused by the movement of electrons is the definition of?
State 2 places where gasfitters would use the defintion of the description above.
Electromagnetism.
Gas valves and safety valves.
Of the six sources of electricity which are the two most used in the gas fitting industry? Of those two are they sources of direct current or alternating current?
Heat - Direct current.
Magnetism - Alternating current.
Define direct current and alternating current.
Direct current - One direction only.
Alternating current - Both directions.
An abnormal connection between two nodes of an electric circuit intended to be at different voltages is the defintion of?
Short circuit.
What is the order of components in an electrical circuit?
A. Source Switch Load.
B. Switch Load Source.
C. Load Source Switch.
D. Conductor Load Source.
A. Source Switch Load.
Where are the three particles present in an atom located in the atom?
Electron: Revolves around the nucleus.
Neutron: Located in the center of the nucleus.
Proton[][]: Located in the center of the nucleus.
What is an ion?
A negatively or positively charged atom.
What is the “law of electrical charges”?
“Like charges repel and unlike charges attract.”
What is the force that keeps electrons in their orbit and what is the force that is trying to move the electrons out of their orbit?
“Attraction of the nucleus” keeps the electrons in their orbit.
“Centrifugal force” tries to move the electrons out of their orbit.
Why is it important to understand valence shells when dealing with electricity?
The electrons in the valence shell are the electrons that are set free most easily.
The flow of tiny particles (electrons) is the definition of?
Electrical current.
A force created by magnets is the definition of?
Magnetism.
Magnetism caused by the movement of electrons is the defintion of?
Electromagnetism.
What are some uses of electromagnetism?
CD Players.
Clocks[][][][]]
Cranes[][][][]]
Generators.
Motors[][][][]]
Testers[][][][]]
Washing Machines.
A scenario where there is a complete path for electricity to flow is the definition of?
Electric circuit.
What components are essential in an electric circuit?
Source - Switch - Load.
Basic measure of a quantity of electrical charge is the definition of?
Coloumb.
What is voltage?
How do you measure voltage?
Electrical pressure.
Multimeter/Voltmeter.
What is current?
How do you measure current?
Electrical Flow.
Measured in amps or amperes.
What is ohm’s?
How do you measure ohm’s?
Electrical resistance.
Measured in ohm’s[][]
What is ohm’s law for power?
P = E x I.
All loads wired to each other.
One goes out, all go out[][][][][]
Operating controls should be wired this way.
Voltage decreases as loads are added to the circuit.
Current remains constant[][][][][][][][][][][][][][][][][][][][][][][][][][][]
Series circuit.