CWEA E1 FINAL STUDY PAPER 2026
COMPLETE QUESTIONS AND ANSWERS
◉ Inductor. Answer: Coil of wire that opposes any change in current.
◉ Magnetic Flow Meters show what when the water is low in
conductivity. Answer: 0 reading if the fluid is low in conductivity.
"Empty Meter"
◉ Purple U.S.A. marking. Answer: Reclaimed water.
◉ Orange U.S.A. marking. Answer: Telecommunication, alarm or
signal lines conduit.
◉ Red U.S.A. marking.. Answer: Electric power lines, cables or
conduit.
◉ What happens when a motor loses one phase out of 3?. Answer:
Single phasing will cause the motor to trip the overload heaters.
◉ What does a Pitot tube do?. Answer: Measures velocity of low to
medium gas flow applications.
,◉ PH range?. Answer: 0-14
7 is neutral.
Less than 7 is acidic.
More than 7 is base (alkaline)
◉ How long is a confined space permit valid for according to OSHA?.
Answer: No longer than it takes to get the work done.
Entry permits are valid for more than one shift if permit info
contains provisions covering shifts.
◉ The voltage from phase to ground in a 480v transformer is?.
Answer: 277 volts.
◉ Signal range for pneumatics?. Answer: 3-15psi. 3-6-9-12-15
◉ Intrinsic safety is?. Answer: Barrier preventing excess voltage or
current from reaching in hazardous area.
◉ How do you add capacitors in series?. Answer: Same as resistors.
◉ How many paths in a parallel circuit?. Answer: More than 1.
, ◉ Determined "Power Factor" formula.. Answer: PF=kw/kva
◉ 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
◉ How long before digging do you notify "dig alert"?. Answer: 2
days.
◉ Dig Alert number?. Answer: 811
◉ What instrument do you use to measure 4-20 mA?. Answer: DC
clamp meter.
COMPLETE QUESTIONS AND ANSWERS
◉ Inductor. Answer: Coil of wire that opposes any change in current.
◉ Magnetic Flow Meters show what when the water is low in
conductivity. Answer: 0 reading if the fluid is low in conductivity.
"Empty Meter"
◉ Purple U.S.A. marking. Answer: Reclaimed water.
◉ Orange U.S.A. marking. Answer: Telecommunication, alarm or
signal lines conduit.
◉ Red U.S.A. marking.. Answer: Electric power lines, cables or
conduit.
◉ What happens when a motor loses one phase out of 3?. Answer:
Single phasing will cause the motor to trip the overload heaters.
◉ What does a Pitot tube do?. Answer: Measures velocity of low to
medium gas flow applications.
,◉ PH range?. Answer: 0-14
7 is neutral.
Less than 7 is acidic.
More than 7 is base (alkaline)
◉ How long is a confined space permit valid for according to OSHA?.
Answer: No longer than it takes to get the work done.
Entry permits are valid for more than one shift if permit info
contains provisions covering shifts.
◉ The voltage from phase to ground in a 480v transformer is?.
Answer: 277 volts.
◉ Signal range for pneumatics?. Answer: 3-15psi. 3-6-9-12-15
◉ Intrinsic safety is?. Answer: Barrier preventing excess voltage or
current from reaching in hazardous area.
◉ How do you add capacitors in series?. Answer: Same as resistors.
◉ How many paths in a parallel circuit?. Answer: More than 1.
, ◉ Determined "Power Factor" formula.. Answer: PF=kw/kva
◉ 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
◉ How long before digging do you notify "dig alert"?. Answer: 2
days.
◉ Dig Alert number?. Answer: 811
◉ What instrument do you use to measure 4-20 mA?. Answer: DC
clamp meter.
