CWEA ELECTRICAL AND INSTRUMENT GRADE
2 EXAM REVIEW QUESTIONS AND VERIFIED
SOLUTIONS
◉ RPM on 4 pole 60 Hz motor
Answer: 1800 RPM
◉ For every 10 Celsius change in operating temp. What happen to
motor wire insulation?
Answer: Degrades 50%
◉ What is it called when teaching someone Electrical Task Training?
Answer: Safety Task Training
◉ Personnel injured when working around machines/equipment
depending what they do. Based on this: What two classification?
Answer: Authorized-Affected
◉ Resistors wired in parallel on battery 5 ohms, 10 ohms, and 20
ohms.
what must be the voltage to force 2.4 amp ?
Answer: 6.84 V
,◉ Best way to test someone after training them?
Answer: Have them teach others or have them perform the task
under supervision
◉ What is amperage 1000 Watts pulled through 12.5 ohms?
Answer: 8.9 amps
◉ What is one way to prolong life of vertical shaft well motor?
Answer: Properly lubricate and make sure fail seal is hooked up
◉ Grounding analog signal both end of wire or one end only?
Answer: Ground only one end of wire. This also how you avoid
ground loop
◉ .15KvA transformer 480-120. How much amps can you pull on
120 side?
Answer: 1.25 amps 150/120=1.25 amp
◉ What are transformer measured in?
Answer: KVA
, ◉ What should flow meter read in this open-channel thing? 36"
wide 30" water depth flow is 2 feet per second
Answer: 9.69 MGD
◉ If equipment failure is the condition in which a piece of
equipment does not operate as intended
Answer: Failure Report
◉ What is the highest Category?
Answer: Category 4
◉ Molde Case Breakers are used for?
Answer: Short circuit or Overload
◉ Nema Enclosure differences?
Answer:
◉ How do you make a conveyor belt go faster and a VFD slower?
Answer: Increase pulley on the conveyor side and decrease pulley on
VFD side
◉ On a a circuit motor starter there are two start switches. Where
does the second starter switch wired ?
2 EXAM REVIEW QUESTIONS AND VERIFIED
SOLUTIONS
◉ RPM on 4 pole 60 Hz motor
Answer: 1800 RPM
◉ For every 10 Celsius change in operating temp. What happen to
motor wire insulation?
Answer: Degrades 50%
◉ What is it called when teaching someone Electrical Task Training?
Answer: Safety Task Training
◉ Personnel injured when working around machines/equipment
depending what they do. Based on this: What two classification?
Answer: Authorized-Affected
◉ Resistors wired in parallel on battery 5 ohms, 10 ohms, and 20
ohms.
what must be the voltage to force 2.4 amp ?
Answer: 6.84 V
,◉ Best way to test someone after training them?
Answer: Have them teach others or have them perform the task
under supervision
◉ What is amperage 1000 Watts pulled through 12.5 ohms?
Answer: 8.9 amps
◉ What is one way to prolong life of vertical shaft well motor?
Answer: Properly lubricate and make sure fail seal is hooked up
◉ Grounding analog signal both end of wire or one end only?
Answer: Ground only one end of wire. This also how you avoid
ground loop
◉ .15KvA transformer 480-120. How much amps can you pull on
120 side?
Answer: 1.25 amps 150/120=1.25 amp
◉ What are transformer measured in?
Answer: KVA
, ◉ What should flow meter read in this open-channel thing? 36"
wide 30" water depth flow is 2 feet per second
Answer: 9.69 MGD
◉ If equipment failure is the condition in which a piece of
equipment does not operate as intended
Answer: Failure Report
◉ What is the highest Category?
Answer: Category 4
◉ Molde Case Breakers are used for?
Answer: Short circuit or Overload
◉ Nema Enclosure differences?
Answer:
◉ How do you make a conveyor belt go faster and a VFD slower?
Answer: Increase pulley on the conveyor side and decrease pulley on
VFD side
◉ On a a circuit motor starter there are two start switches. Where
does the second starter switch wired ?
