6-12 Test Questions w ith 100% Ver ifi ed Cor r ect
Answ er s
1. architectual drafting: the creation of drawings and models used to build structure
2. electrical drafting: formulate charts, plans and drawings that consist of electric wiring designs, which are
used to set up and restore electrical equipment
3. mechanical drafting: based on technical drafting and computer-aided drafting (CAD) that concentrates on
blueprints of machines and machine components used by engineers. Deals with 2d and 3d drafting and robotics
4. line conventions: Standardization of lines used on technical drawings by line weight and style.
5. dimensioning: The process of placing measurements and notes on a drawing to completely communicate
its meaning.
6. orthographic: 2D flat reprsentation of a 3D object (ortho means straight, rectangular, upright) view of an
object when you look at the top, front, back, left, right.
7. auxiliary view: planes through the object which are not common planes, surfaces that dont line up with
the 3 major axes. view that is used to show features that are located on an inclined surface in true size and shape. is
an orthographic view which is projected onto any plane other than the frontal, horizontal, or profile plane. (aux means to
help)
8. resolution: number of lines per inch that a device can create
9. touch screen: Arrays of infrared light sources and array of
detectors are used to generate invisible light
grids. A finger interrupts two light beams and
,provides x and y coordinates.
10. AC: alternating current. the flow of charge that changes direction periodically. As a result, the voltage level also
reverses along with the current. AC is used to deliver power to houses, oflce buildings, etc.
11. DC: direct current. an electric current that flows in one direction steadily. provides a constant current or
voltage. Batteries provide DC, which is generated from a chemical reaction inside of the battery. Everything that runs ott
of a battery, plugs in to the wall with an AC adapter, or uses a USB cable for power relies on DC.
12. Kirchoff's law: law that deals with the conservation of energy around a closed circuit path. His voltage
law
states that for a closed loop series path the algebraic sum of all the voltages around any closed loop in a circuit is equal to
zero.
13. Ohm's law: how electrical resistance is measured; current = voltage/resistance or I = V × R which means
current
will rise when voltage rises but resistance is cut in half
14. analog circuit: information is translated into electric pulses of varying amplitude. denoted by sine
waves. example: human voice
15. digital circuit: translation of information is into binary format (zero or one) where each bit is
representative of two distinct amplitudes. denoted by square waves. example: computer, CD
16. electrical current: the flow of electrons. it only exists when there is a flow of electrons in one direction.
it's measured in amperes (A).
17. 1 ampere (A): how we measure the strength of electrical currents and says how many electrons pass a
fixed point in one second. the flow of one coulomb of charge per second.
18. coulomb's law: describes the relationship between 2 charged particles. F=k(q:q q2/d2) where f is
, force and q are 2 ditterent particles and d2 is distance. like charges repel and opposite charges attract.
1 amp of current in 1 second. describes the magnitude of a charge but amps are the moving charge, the current, so they
are more important :p
19. electrical resistance: the property of a material that resists electric current, measured in ohms. some
metals, like copper, have no resistance while rubber has a high resistance.
20. voltage: this is pressure in an electrical system that pushes the electrons in a direction. there must be a
ditterence in pressure on opposing ends of the circuit. example: battery which has high pressure on one end and
low pressure on the other.
21. nuclear energy: the potential energy stored in the nucleus of an atom that is separated with nuclear
fission.
a chain reaction then happens which makes energy in the form of heat. this heat goes into water in nuclear reactors, steam
rises up, goes into turbines which power electric generators.
22. fuel cell: A device that converts hydrogen or another fuel into electricity. It powers space shuttles and
buildings.
Cant use it on cars because the amount of hydrogen gas needed to power a car has too much volume to work
23. electrical charge: an excess or deficit of electrons on an object. like charges repel, opposite charges
attract
24. fossil fuel: made of dead fossils that are hydrogen and carbon. coal is carbon. gas is in porous rocks
(main ingredient in it is methane). oil in porous rocks or in pools and then is purified to be gas, kerosene, diesel
25. router: device that routes packets of data between two or more networks, the internet
26. cache memory: in the CPU, its a type of high-speed memory used to hold frequently used data
immediately