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1. Describe the electrical systems you have worked on and how did you get your training?

2. What is your experience with electrical schematics?

3. What is your experience with ladder logic?

4. Describe the malfunctions you have experienced with PLC hardware?

5. Describe a tough electrical troubleshooting problem you have experienced, and briefly explain the steps you used to solve the problem.

6. What is the difference between a digital signal and an analog signal?

7. How often do you use a personal computer in a typical day? What do you do with it?

8. Describe a process problem you have experienced and how did you solve it?

9. Give an example of a tough loop you had to tune. What were the problems? And how did you solve them?

10. What brands of VFD's are you familiar with.

11. Describe some of the malfunctions associated with VFD's, and give an example of a tough VFD problem you had to solve.

12a. Using Ladder logic, write a program that will START and STOP a motor with momentary START and STOP push buttons. (Provide a sheet of paper)

12b. Add ladder logic that will turn the motor OFF after running for two minutes.

13. Describe the steps you take to troubleshoot a 3 phase, 480 volt motor that continually trips the heaters.

14a. Why is the earth pin in a 3-pin plug the longest and the thickest?

14b. Explain the purpose of grounding.

15. Describe a control panel you wired, designed, or modified. What was the purpose of the panel and state each component you used.

16. Describe the difference between a sourcing input and a sinking input.

17. Why do you want this job?

PWR 1)sensitivity of ELCB

PWR 2)about MCB ratings

PWR 3)earth resistance and earth compounds

PWR 4)what is LDR

PWR 5)your electrical activity in your society

PWR 5)CONSTRUCTION OF CAPACITOR

PWR 6)transformer and related formulas

PWR 7)industrial lightings

PWR 8)what is the nature of electrons

PWR 9)use of ballast in tube light

PWR 10)CABLE SIZE AND AMPERE RATINGS

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Describe the electrical systems you have worked on and how did you get your training?

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Q: Interview questions for electrical maintenance
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