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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. 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:
watt
anaphoresis
volt
safety goggles
2. The path of electricity from the generating source through conductors and back to the original source is called a(n)
galvanic current
conductors
complete circuit
fuse
3. Is a unit that measures the resistance of an electric current
AC
direct current
Desincrustation
ohm
4. Is process used to soften and emulsify grease deposits (oil) and blackheads in the hair follicles.
converter
ohm
complete circuit
Desincrustation
5. Electric current that is constant - even - flowing and travels in one direction is:
energy
cold rays or actinic rays
Most commonly used modality is
direct current
6. 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
converter
True
Tesla current
Desincrustation
7. Makes up 5% of natural sunlight
alternating current
watt
Fuse and circuit breaker
Ultraviolet (UV) rays
8. An applicator that is used for directing the electric current from the machine to the clients skin is called a (n)
Most commonly used modality is
direct current
fuse
electrode
9. The flow of electricity along a conductor is called a(n)
infrared rays
wavelength
grounding
electric current
10. Prevents current from overload or excessive overload of circuit
cold rays or actinic rays
iontophoresis
galvanic current
Fuse and circuit breaker
11. The positive electrode of an electrotherapy device is called a (n):
infrared rays
polarity
anode
converter
12. An important way of promoting electrical safety is the principle of:
AC
measures strength of electric current
grounding
True
13. The current that is used for facial and scalp treatments is measured in :
iontophoresis
nonconductor
milliamperes
watt
14. The unit that measures how much electric energy is being used in one second is a (n)
violet ray
direct current
galvanic current
watt
15. Metals used in electric wiring and motors are materials that are considered good electricity:
nonconductor
conductors
watt
Most commonly used modality is
16. Produces moist - uniform heat that can be appiled to the head or face
steamer or vaporizer
alternating current
ohm
circuit breaker
17. The most commonly used modality that is a constant and direct current is:
electric current
galvanic current
grounding
converter
18. Uv rays are applied with a lamp at a distance of
30 to 36 inches
conductors
fuse
complete circuit
19. Amp
energy
complete circuit
measures strength of electric current
ohm
20. The device that changes direct current to alternating current is a(n)
True
nonconductor
iontophoresis
converter
21. The distance between two successive peaks is called the
measures strength of electric current
wavelength
electrode
Cataphoresis
22. Indicates the negative or positive pole of an electric current
wavelength
polarity
measures strength of electric current
circuit breaker
23. A thermal or heat- producing current with a high rate of oscillation that is used for scalp and facial treatments is :
galvanic current
direct current
Tesla current
conductors
24. Forces acidic substances into deeper tissue using galvanic current from the positive toward the negative pole
Cataphoresis
volt
Most commonly used modality is
True
25. Ultraviolet (UV) rays are also referred to as
milliamperes
cold rays or actinic rays
cathode
wavelength
26. The negative electrode of an electrotherapy device is called a (n)
cathode
polarity
Desincrustation
violet ray
27. Is a measurement of how much electric energy is being used in one second
True
cathode
conductors
watt
28. A switch that automatically interrupts or shuts off an electric current at the first indication of an overload is a (n)
infrared rays
circuit breaker
alternating current
electric current
29. A process that forces liquids into the tissuse from the negative toward the positive pole is called:
anaphoresis
converter
Cataphoresis
galvanic current
30. Meaning Alternating Current
iontophoresis
Ultraviolet (UV) rays
AC
ampere
31. Visible light - the part of the electromagnetic radiation spectrum that we can see - makes up what percentage of natural sunlight ?
35 percent
nonconductor
True
direct current
32. The device that prevents excessive current from passing through a circuit is a (n)
steamer or vaporizer
iontophoresis
Ultraviolet (UV) rays
fuse
33. Is a thermal or heat - producing current with a high rate of oscillation or vibration
cathode
Tesla high- frequency current
wavelength
anaphoresis
34. Tesla high- frequency current It is commonly called
anaphoresis
nonconductor
violet ray
Desincrustation
35. The long wavelenghts that penetrate the deepest and produce the most heat are:
infrared rays
conductors
energy
electrode
36. A rapid and interrupted current that flows in one direction then in the opposite direction is :
complete circuit
True
Ultraviolet (UV) rays
alternating current
37. Galvanic current
measures strength of electric current
Most commonly used modality is
Ultraviolet (UV) rays
electrode
38. The unit that measures the pressure or force that pushes the flow of electrons through a conductor is a (n)
volt
watt
watt
Tesla high- frequency current
39. Electricity is described as a form of:
energy
safety goggles
volt
electrode
40. The process of forcing water- soluble products into the skin with the use of electric current is called :
iontophoresis
30 to 36 inches
AC
watt
41. The unit that measures the amount of electric current is a(n)
energy
measures strength of electric current
ampere
anode
42. Electric wires are usually covered with a rubber substance that is used as an insulator or:
electrode
nonconductor
conductors
violet ray