CWEA ELECTRICAL AND INSTRUMENT
EXAM STUDY GUIDE 2026 COMPLETE
QUESTIONS WITH VERIFIED SOLUTIONS
◉ Is the Oxygen Safe Zone at 22% Safe?
Answer: Yes, the safe zone is between 19.5% to 23.5%
◉ L.O.T.O.
Answer: Lock out tag out
◉ In a 480 transformer, the voltage from one phase to ground is?
Answer: 277 volts.
◉ What is the main electrical danger when using corded power
tools?
Answer: A short circuit
◉ Shielding protects an analog meter from?
Answer: Stray magnetic fields.
◉ The frame, core, winding and end plates are all parts of?
,Answer: A stator.
◉ If 17.32v are applied across a resistance of 50 ohms, how much
power is expended in the resistor?
Answer: 6.0 watts.
Formula: V squared/R = P
17.32 squared(299.98)/50=5.99
◉ Signal range for pneumatics?
Answer: 3-15psi. 3-6-9-12-15
◉ If transformer primary=120v and secondary 12v=20 amps, what
are the amps on the primary?
Answer: 2 amps.
Formula:
I =Amps/Volume of current
E = Volts/Force moving the current
P = Watts, Electrical power produced
I x E=P
12 x 20=240watts
In a transformer watts stay the same so now:
P/E=I
, 240/120v=2 amps
◉ What happens when a motor loses one phase out of 3?
Answer: Single phasing will cause the motor to trip the overloads
◉ What instrument do you use to measure 4-20 mA?
Answer: DC clamp meter
◉ How do you connect an ammeter to check an electrical circuit?
Answer: In series with the load.
◉ If you are angry or impatient with one worker you should?
Answer: Avoid transferring that feeling to others.
◉ First step in troubleshooting a programmable logic
controller(PLC) system is?
Answer: Knowing and understanding the process
◉ Which of the following actions should be taken before working on
controls that may disrupt plant operations?
Answer: Have an operator present.
EXAM STUDY GUIDE 2026 COMPLETE
QUESTIONS WITH VERIFIED SOLUTIONS
◉ Is the Oxygen Safe Zone at 22% Safe?
Answer: Yes, the safe zone is between 19.5% to 23.5%
◉ L.O.T.O.
Answer: Lock out tag out
◉ In a 480 transformer, the voltage from one phase to ground is?
Answer: 277 volts.
◉ What is the main electrical danger when using corded power
tools?
Answer: A short circuit
◉ Shielding protects an analog meter from?
Answer: Stray magnetic fields.
◉ The frame, core, winding and end plates are all parts of?
,Answer: A stator.
◉ If 17.32v are applied across a resistance of 50 ohms, how much
power is expended in the resistor?
Answer: 6.0 watts.
Formula: V squared/R = P
17.32 squared(299.98)/50=5.99
◉ Signal range for pneumatics?
Answer: 3-15psi. 3-6-9-12-15
◉ If transformer primary=120v and secondary 12v=20 amps, what
are the amps on the primary?
Answer: 2 amps.
Formula:
I =Amps/Volume of current
E = Volts/Force moving the current
P = Watts, Electrical power produced
I x E=P
12 x 20=240watts
In a transformer watts stay the same so now:
P/E=I
, 240/120v=2 amps
◉ What happens when a motor loses one phase out of 3?
Answer: Single phasing will cause the motor to trip the overloads
◉ What instrument do you use to measure 4-20 mA?
Answer: DC clamp meter
◉ How do you connect an ammeter to check an electrical circuit?
Answer: In series with the load.
◉ If you are angry or impatient with one worker you should?
Answer: Avoid transferring that feeling to others.
◉ First step in troubleshooting a programmable logic
controller(PLC) system is?
Answer: Knowing and understanding the process
◉ Which of the following actions should be taken before working on
controls that may disrupt plant operations?
Answer: Have an operator present.
