CWEA Electrical & Instrument Grade 2
Study Guide 2024-2025. Graded A+
.15KvA transformer 480-120. How much amps can you pull on 120 side? - ANS1.25
amps 150/120=1.25 amp
· When finding volume, the tank maybe 30' high but only filled to 14' read the question
and make sure you are performing the formula as it pertains to the question. - ANS?
4-20 mA output for a device with a range of 0-63,535. Read is 6 mA. What is the
measurement reading? - ANS6mA/20mA= 0.3, 0.3 x 63,535= 19,060.5
A 12V battery rated to provide 1amp for 20 hours across a 2000w load. How long will
the battery continue to produce an output? - ANSA. 1 hour
B. 10 hour
C.*** 100 hour
D. 1000 hour
A 3 phase motor shows 15 FLA.(Full Load Amperes) You have readings of 15.6, 16.1
and 15.9, what is the condition of the motor? - ANSThe motor is overloaded.
A 3 phase motor with an FLA of 25 amps has these readings, A phase 26a, B phase
26.9a, C phase 27a. This motor is what? - ANSA. Overloaded
B. Needs adjustment
C. Fine
D. Duty rated
A 36" pipe has an elevation gain of 300', the process reaches an elevation of 200'. What
is the PSI? - ANSDo Calculation
A 480V, 3 phase motor, Delta connected, has one leg shorted, what will the resistance
be compared to the other legs - ANSA. Greater
*B. Lower
C. Same
D. Greater or lower
A 500hp, 3 phase, 460v, 8-pole, 900 rpm motor is connected to a 5:1 gear box. What is
the rpm of the output shaft? Forget about all the needless information. The question
gives the rpm of the motor that's all you need. - ANSDo Calculations
A commutator is found in what piece of equipment? - ANSDC motor
A diaphragm type gauge protector is used in which type of environment? -
ANSCorrosive
, A flow meter that uses a small hole in a plate to measure flow is a what? - ANSA.
Venturi
B. Orifice
C. Magnetic
D. Rotometer
A molded case breaker is designed to protect against what? - ANSA. Overcurrent
B. Overcurrent and short circuits
C. Short circuits
A pipe has a 10" opening , and produces 2500 GPM. How many cubic feet/sec? -
ANSDo Calculations
A resistor with the colors orange, orange/white, XXX, XXX, what is its value? Know your
resistor color values. - ANS33 G ohms
A reversing starter reverses a three-phase
motor by interchanging: - ANStwo of the line leads
A signal that goes from - to + is called a what? - ANSAC
A soft starter works by? - ANScontrolling the amount of voltage running through the
motors circuits. It does this by limiting torque in the motor. This in turn allows the soft
starter to reduce the voltage and allows it to gradually stop reducing the voltage to allow
for a smooth progression of current.
A tank is 30' high, 26' wide, filled 14'. What is the volume? I believe you should assume
this tank is a cylinder. Pay attention if the question ask for the tanks volume or the
volume of the fluid inside the tank. - ANSDo Calculations
Absoulte Pressure Gauge? What is True? - ANSPossible answer: Read more accurate
or 14.7 PSI higher
AC reads out how? - ANSPeak to peak.
Arc-rated clothing is rated? - ANSCal/Cm2
Best way to check a 4-20ma signal? - ANSPlace DMM selector to mA and put leads in
series with the circuit.
Best way to test someone after training them? - ANSHave them teach others or have
them perform the task under supervision
Chlorine Analyzer reads lower ever time but grab sample shows level are good. What
do troubleshoot first? - ANSBuffer
Study Guide 2024-2025. Graded A+
.15KvA transformer 480-120. How much amps can you pull on 120 side? - ANS1.25
amps 150/120=1.25 amp
· When finding volume, the tank maybe 30' high but only filled to 14' read the question
and make sure you are performing the formula as it pertains to the question. - ANS?
4-20 mA output for a device with a range of 0-63,535. Read is 6 mA. What is the
measurement reading? - ANS6mA/20mA= 0.3, 0.3 x 63,535= 19,060.5
A 12V battery rated to provide 1amp for 20 hours across a 2000w load. How long will
the battery continue to produce an output? - ANSA. 1 hour
B. 10 hour
C.*** 100 hour
D. 1000 hour
A 3 phase motor shows 15 FLA.(Full Load Amperes) You have readings of 15.6, 16.1
and 15.9, what is the condition of the motor? - ANSThe motor is overloaded.
A 3 phase motor with an FLA of 25 amps has these readings, A phase 26a, B phase
26.9a, C phase 27a. This motor is what? - ANSA. Overloaded
B. Needs adjustment
C. Fine
D. Duty rated
A 36" pipe has an elevation gain of 300', the process reaches an elevation of 200'. What
is the PSI? - ANSDo Calculation
A 480V, 3 phase motor, Delta connected, has one leg shorted, what will the resistance
be compared to the other legs - ANSA. Greater
*B. Lower
C. Same
D. Greater or lower
A 500hp, 3 phase, 460v, 8-pole, 900 rpm motor is connected to a 5:1 gear box. What is
the rpm of the output shaft? Forget about all the needless information. The question
gives the rpm of the motor that's all you need. - ANSDo Calculations
A commutator is found in what piece of equipment? - ANSDC motor
A diaphragm type gauge protector is used in which type of environment? -
ANSCorrosive
, A flow meter that uses a small hole in a plate to measure flow is a what? - ANSA.
Venturi
B. Orifice
C. Magnetic
D. Rotometer
A molded case breaker is designed to protect against what? - ANSA. Overcurrent
B. Overcurrent and short circuits
C. Short circuits
A pipe has a 10" opening , and produces 2500 GPM. How many cubic feet/sec? -
ANSDo Calculations
A resistor with the colors orange, orange/white, XXX, XXX, what is its value? Know your
resistor color values. - ANS33 G ohms
A reversing starter reverses a three-phase
motor by interchanging: - ANStwo of the line leads
A signal that goes from - to + is called a what? - ANSAC
A soft starter works by? - ANScontrolling the amount of voltage running through the
motors circuits. It does this by limiting torque in the motor. This in turn allows the soft
starter to reduce the voltage and allows it to gradually stop reducing the voltage to allow
for a smooth progression of current.
A tank is 30' high, 26' wide, filled 14'. What is the volume? I believe you should assume
this tank is a cylinder. Pay attention if the question ask for the tanks volume or the
volume of the fluid inside the tank. - ANSDo Calculations
Absoulte Pressure Gauge? What is True? - ANSPossible answer: Read more accurate
or 14.7 PSI higher
AC reads out how? - ANSPeak to peak.
Arc-rated clothing is rated? - ANSCal/Cm2
Best way to check a 4-20ma signal? - ANSPlace DMM selector to mA and put leads in
series with the circuit.
Best way to test someone after training them? - ANSHave them teach others or have
them perform the task under supervision
Chlorine Analyzer reads lower ever time but grab sample shows level are good. What
do troubleshoot first? - ANSBuffer
