Digital Multimeter Units 1-5 Flashcards
A “digital multimeter (DMM)” is a test tool used to measure _____ or more electrical values.
Answer 1: two
Answer 2: three
Answer 3: four
Answer 4: five
two
Electrical Measurement Safety
“Personal protective equipment (PPE)” is clothing and/or equipment worn by a technician to reduce the possibility of injury in the work area.
Answer 1: True
Answer 2: False
True
Personal Protective Equipment
A “transient voltage” (voltage spike) is a(n) _____ voltage in an electrical circuit.
Answer 1: constant, unchanging
Answer 2: temporary, undesirable
Answer 3: unstable, highly flammable
Answer 4: none of these
temporary, undesirable
International Electrotechnical Commission (IEC) 61010 Safety Standard
Electrical circuits are _____ to safeguard equipment and personnel against the hazards of electric shock.
Answer 1: bonded
Answer 2: jumpered
Answer 3: de-energized
Answer 4: grounded
grounded
Grounding
“Lockout” is the process of removing the source of electrical power and installing a _____ that prevents the power from being turned on.
Answer 1: bar
Answer 2: lock
Answer 3: key
Answer 4: all of these
lock
Lockout/Tagout
“Tagout” is the process of placing a _____ tag on the source of electrical power, which indicates that the equipment may not be operated until the tag is removed.
Answer 1: no trespassing
Answer 2: yellow
Answer 3: time-out
Answer 4: danger
danger
Lockout/Tagout
An “_____” is a discharge of electric current across an air gap.
Answer 1: electric arc
Answer 2: arc flash
Answer 3: arc blast
Answer 4: none of these
electric arc
Arc Blast Safety
The “flash protection boundary” is the distance at which personal protective equipment (PPE) is optional to prevent burns when an arc occurs.
Answer 1: True
Answer 2: False
False
Arc Blast Safety
DMMs can be broadly classified as _____ DMMs.
Answer 1: general-purpose
Answer 2: standard
Answer 3: advanced
Answer 4: any of these
any of these
DMM Types
Characteristics of a general-purpose DMM include _____.
Answer 1: the ability to measure two or more basic electrical quantities
Answer 2: a continuity test mode
Answer 3: a display usually limited to three digits
Answer 4: all of these
all of these
DMM Types
A standard DMM is useful for _____.
Answer 1: taking measurements
Answer 2: troubleshooting
Answer 3: a and b
Answer 4: none of these
a and b
DMM Types
An advanced DMM can be used for standard DMM applications, troubleshooting complex problems, and identifying conditions that lead to _____.
Answer 1: problems
Answer 2: short circuits
Answer 3: ground faults
Answer 4: arc flashes
problems
DMM Types
fA DMM is commonly used for measuring electrical quantities such as _____ in electrical and electronic circuits.
Answer 1: voltage
Answer 2: amperage
Answer 3: resistance
Answer 4: all of these
all of these
DMM Usage
DMMs commonly use _____ to represent a quantity or term for quick recognition.
Answer 1: scientific notation
Answer 2: standard abbreviations
Answer 3: a and b
Answer 4: none of these
standard abbreviations
DMM Usage
The minimum and maximum quantity that a DMM can safely and accurately measure is known as the “_____ range.”
Answer 1: measuring
Answer 2: capture
Answer 3: amplitude
Answer 4: sample
measuring
DMM Usage
The “trigger level” is the _____ level at which the DMM counter is triggered.
Answer 1: constant
Answer 2: variable
Answer 3: fixed
Answer 4: none of these
fixed
DMM Usage
