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Test your basic knowledge |
Basic Of Electricity 3
Start Test
Study First
Subject
:
engineering
Instructions:
Answer 42 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Ultraviolet (UV) rays are also referred to as
direct current
cold rays or actinic rays
volt
ampere
2. The unit that measures how much electric energy is being used in one second is a (n)
watt
alternating current
steamer or vaporizer
35 percent
3. Indicates the negative or positive pole of an electric current
watt
polarity
nonconductor
milliamperes
4. Electric wires are usually covered with a rubber substance that is used as an insulator or:
conductors
converter
nonconductor
milliamperes
5. Makes up 5% of natural sunlight
volt
electric current
Ultraviolet (UV) rays
True
6. The path of electricity from the generating source through conductors and back to the original source is called a(n)
cold rays or actinic rays
converter
complete circuit
anode
7. The unit that measures the amount of electric current is a(n)
Cataphoresis
35 percent
ampere
electrode
8. An applicator that is used for directing the electric current from the machine to the clients skin is called a (n)
electrode
fuse
direct current
energy
9. A thermal or heat- producing current with a high rate of oscillation that is used for scalp and facial treatments is :
cathode
AC
Fuse and circuit breaker
Tesla current
10. The distance between two successive peaks is called the
iontophoresis
ampere
wavelength
violet ray
11. Tesla high- frequency current It is commonly called
True
violet ray
grounding
AC
12. To avoid damage to the eyes of a client or practitioner when using light therapy treatments - the eyes should be protected with saturated cotton pads or:
galvanic current
safety goggles
cold rays or actinic rays
30 to 36 inches
13. Is a thermal or heat - producing current with a high rate of oscillation or vibration
energy
AC
Tesla high- frequency current
cathode
14. The process of forcing water- soluble products into the skin with the use of electric current is called :
ohm
wavelength
iontophoresis
polarity
15. The device that changes direct current to alternating current is a(n)
iontophoresis
wavelength
converter
AC
16. Prevents current from overload or excessive overload of circuit
nonconductor
cathode
Fuse and circuit breaker
conductors
17. The positive electrode of an electrotherapy device is called a (n):
polarity
anaphoresis
anode
AC
18. A rapid and interrupted current that flows in one direction then in the opposite direction is :
wavelength
volt
Ultraviolet (UV) rays
alternating current
19. Is a unit that measures the resistance of an electric current
conductors
ohm
steamer or vaporizer
polarity
20. Meaning Alternating Current
AC
violet ray
35 percent
ampere
21. Electric current that is constant - even - flowing and travels in one direction is:
direct current
Tesla high- frequency current
cathode
Cataphoresis
22. A switch that automatically interrupts or shuts off an electric current at the first indication of an overload is a (n)
electrode
circuit breaker
electric current
watt
23. Electricity is described as a form of:
infrared rays
electric current
energy
converter
24. Visible light - the part of the electromagnetic radiation spectrum that we can see - makes up what percentage of natural sunlight ?
direct current
True
35 percent
anaphoresis
25. Amp
30 to 36 inches
cathode
measures strength of electric current
grounding
26. An important way of promoting electrical safety is the principle of:
AC
iontophoresis
alternating current
grounding
27. The device that prevents excessive current from passing through a circuit is a (n)
fuse
Cataphoresis
cathode
galvanic current
28. Galvanic current
ohm
direct current
watt
Most commonly used modality is
29. Produces moist - uniform heat that can be appiled to the head or face
steamer or vaporizer
conductors
anode
energy
30. The unit that measures the pressure or force that pushes the flow of electrons through a conductor is a (n)
electric current
wavelength
milliamperes
volt
31. The flow of electricity along a conductor is called a(n)
alternating current
Tesla current
grounding
electric current
32. Is a measurement of how much electric energy is being used in one second
watt
polarity
galvanic current
ampere
33. The long wavelenghts that penetrate the deepest and produce the most heat are:
Tesla current
infrared rays
electric current
safety goggles
34. A process that forces liquids into the tissuse from the negative toward the positive pole is called:
milliamperes
30 to 36 inches
Tesla current
anaphoresis
35. Metals used in electric wiring and motors are materials that are considered good electricity:
ohm
milliamperes
steamer or vaporizer
conductors
36. The most commonly used modality that is a constant and direct current is:
volt
ampere
polarity
galvanic current
37. Forces acidic substances into deeper tissue using galvanic current from the positive toward the negative pole
conductors
energy
complete circuit
Cataphoresis
38. Uv rays are applied with a lamp at a distance of
Desincrustation
conductors
30 to 36 inches
energy
39. Is process used to soften and emulsify grease deposits (oil) and blackheads in the hair follicles.
35 percent
complete circuit
Desincrustation
galvanic current
40. The current that is used for facial and scalp treatments is measured in :
ampere
energy
milliamperes
True
41. The negative electrode of an electrotherapy device is called a (n)
conductors
direct current
cathode
ampere
42. Tesla high frequency current should not be used on clients who pregnant - suffer from epilepsy or asthma - high blood pressure - sinus blockage - pacemaker or metal implants
ampere
electrode
True
Fuse and circuit breaker