CWEA STUDY GUIDE 2026
ELECTRICAL AND INSTRUMENTATION EXAM
QUESTIONS WITH DETAILED ANSWERS
Receiving job instruction and planning
equipment use are part of:
a. craft data.
b. job preparation.
c. work factors.
d. leveled time. - ANSWER-b. job preparation
Anticipating other tasks or problems:
a. usually creates additional problems.
b. wastes time.
c. sharply reduces the number
of emergencies.
d. often is not worth the effort. - ANSWER-c sharply reduces the number
of emergencies
Making job planning a group effort:
a. wastes time.
b. improves productivity.
c. causes confusion.
d. All the above - ANSWER-b improves productivity
Rubber safety gloves should be tested how often?
a Every 12 months
b. Every 9 months
c. Every 6 months
,d. Every 4 months - ANSWER-a Every 12 months
Rubber safety blankets should be tested how often?
a. Every 6 months
b. Every 9 months
c. Every 12 months
d. Every 18 months - ANSWER-b Every 9 months
What is the interrupting current of a GFIC receptacle?
a. 20 VAL
b. 5 MA
c. 10 UDL
d. 20 MA - ANSWER-b 5 MA
What type of stepladder is forbidden while working on electrical equipment?
a. Wood
b. Fiberglass
c. Aluminum
d. Ceramic - ANSWER-c Aluminum
What is the killer of electrical shock?
a. Voltage
b. Current
c. Resistance
d. Ohms - ANSWER-b Current
The relationship between an electric
current and a magnetic field is called:
a. matter.
b. atoms.
c. electromagnetism.
,d. element - ANSWER-c electromagnetism
Electrons flowing from one place to
another make a:
a. current.
b. track.
c. circuit.
d. channel - ANSWER-a current
Between two objects, the development
of static charges creates a:
a. potential difference.
b. battery.
c. thermocouple.
d. resistance - ANSWER-a potential difference
A coil of wire that carries an electric
current is called a:
a. conductor.
b. thermocouple.
c. electrocurrent.
d. electromagnet - ANSWER-d electromagnet
Metals are good conductors because
they have many:
a. insulators.
b. free electrons.
c. resistors.
d. inductors. - ANSWER-b free electrons
The amount of potential difference a layer of
, insulation can withstand without breaking down is:
a. resistance.
b. voltage drop.
c. dielectric strength.
d. ampacity - ANSWER-c dielectric strength
What is the property of a coil of wire that opposes any change in the current in the coil?
a. Inductance
b. Resistance
c. Impedance
d. Watts - ANSWER-a Inductance
What is the correct name for "voltage" or electromotive force?
a. Element
b. Electron
c. Circuit
d. Potential difference - ANSWER-d Potential difference
A rate of flow of one coulomb per second
is called one:
a. ampere.
b. joule.
c. volt.
d. olhum. - ANSWER-a ampere
What is the name for the proportional relationship
between potential difference and current?
a. Voltage drop
b. Voltmeter
c. Ampmeter
ELECTRICAL AND INSTRUMENTATION EXAM
QUESTIONS WITH DETAILED ANSWERS
Receiving job instruction and planning
equipment use are part of:
a. craft data.
b. job preparation.
c. work factors.
d. leveled time. - ANSWER-b. job preparation
Anticipating other tasks or problems:
a. usually creates additional problems.
b. wastes time.
c. sharply reduces the number
of emergencies.
d. often is not worth the effort. - ANSWER-c sharply reduces the number
of emergencies
Making job planning a group effort:
a. wastes time.
b. improves productivity.
c. causes confusion.
d. All the above - ANSWER-b improves productivity
Rubber safety gloves should be tested how often?
a Every 12 months
b. Every 9 months
c. Every 6 months
,d. Every 4 months - ANSWER-a Every 12 months
Rubber safety blankets should be tested how often?
a. Every 6 months
b. Every 9 months
c. Every 12 months
d. Every 18 months - ANSWER-b Every 9 months
What is the interrupting current of a GFIC receptacle?
a. 20 VAL
b. 5 MA
c. 10 UDL
d. 20 MA - ANSWER-b 5 MA
What type of stepladder is forbidden while working on electrical equipment?
a. Wood
b. Fiberglass
c. Aluminum
d. Ceramic - ANSWER-c Aluminum
What is the killer of electrical shock?
a. Voltage
b. Current
c. Resistance
d. Ohms - ANSWER-b Current
The relationship between an electric
current and a magnetic field is called:
a. matter.
b. atoms.
c. electromagnetism.
,d. element - ANSWER-c electromagnetism
Electrons flowing from one place to
another make a:
a. current.
b. track.
c. circuit.
d. channel - ANSWER-a current
Between two objects, the development
of static charges creates a:
a. potential difference.
b. battery.
c. thermocouple.
d. resistance - ANSWER-a potential difference
A coil of wire that carries an electric
current is called a:
a. conductor.
b. thermocouple.
c. electrocurrent.
d. electromagnet - ANSWER-d electromagnet
Metals are good conductors because
they have many:
a. insulators.
b. free electrons.
c. resistors.
d. inductors. - ANSWER-b free electrons
The amount of potential difference a layer of
, insulation can withstand without breaking down is:
a. resistance.
b. voltage drop.
c. dielectric strength.
d. ampacity - ANSWER-c dielectric strength
What is the property of a coil of wire that opposes any change in the current in the coil?
a. Inductance
b. Resistance
c. Impedance
d. Watts - ANSWER-a Inductance
What is the correct name for "voltage" or electromotive force?
a. Element
b. Electron
c. Circuit
d. Potential difference - ANSWER-d Potential difference
A rate of flow of one coulomb per second
is called one:
a. ampere.
b. joule.
c. volt.
d. olhum. - ANSWER-a ampere
What is the name for the proportional relationship
between potential difference and current?
a. Voltage drop
b. Voltmeter
c. Ampmeter
