CWEA Electrical and Instrument Grade 2 Study Guide Latest Update 2024-2025 125 Questions and 100% Verified Correct Answers Guaranteed A+
.15KvA transformer 480-120. How much amps can you pull on 120 side? - CORRECT
ANSWER: 1.25 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. -
CORRECT ANSWER: ?
4-20 mA output for a device with a range of 0-63,535. Read is 6 mA. What is the
measurement reading? - CORRECT ANSWER: 6mA/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? - CORRECT ANSWER: A. 1 hour
- 10 hour
- 1000 hour
C.*** 100 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? - CORRECT ANSWER: The 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? - CORRECT ANSWER: A. Overloaded
- Needs adjustment
- Fine
- Duty rated
A 36" pipe has an elevation gain of 300', the process reaches an elevation of 200'. What
is the PSI? - CORRECT ANSWER: Do Calculation
A 480V, 3 phase motor, Delta connected, has one leg shorted, what will the resistance
be compared to the other legs - CORRECT ANSWER: A. Greater
*B. Lower
- Same
- 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. - CORRECT ANSWER: Do Calculations 1 / 2
A commutator is found in what piece of equipment? - CORRECT ANSWER: DC motor
A diaphragm type gauge protector is used in which type of environment? - CORRECT
ANSWER: Corrosive
A flow meter that uses a small hole in a plate to measure flow is a what? - CORRECT
ANSWER: A. Venturi
- Orifice
- Magnetic
- Rotometer
A molded case breaker is designed to protect against what? - CORRECT ANSWER: A.
Overcurrent
- Overcurrent and short circuits
- Short circuits
A pipe has a 10" opening , and produces 2500 GPM. How many cubic feet/sec? -
CORRECT ANSWER: Do Calculations
A resistor with the colors orange, orange/white, XXX, XXX, what is its value? Know your
resistor color values. - CORRECT ANSWER: 33 G ohms
A reversing starter reverses a three-phase motor by interchanging: - CORRECT ANSWER: two of the line leads
A signal that goes from - to + is called a what? - CORRECT ANSWER: AC
A soft starter works by? - CORRECT ANSWER: controlling 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. - CORRECT ANSWER: Do Calculations
Absoulte Pressure Gauge? What is True? - CORRECT ANSWER: Possible answer: Read more accurate or 14.7 PSI higher
AC reads out how? - CORRECT ANSWER: Peak to peak.
Arc-rated clothing is rated? - CORRECT ANSWER: Cal/Cm2
Best way to check a 4-20ma signal? - CORRECT ANSWER: Place DMM selector to mA
and put leads in series with the circuit.
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