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