DCM Shriram Electrical Wireman Interview Questions and Answers

Fundamental and controlling system

Q1. Electrical protection, fault finding, protective device and short circuit
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Q2. Which device is very sensational in low voltage protective system?
Ans. 
The device that is very sensational in low voltage protective system is a Ground Fault Circuit Interrupter (GFCI).
• Ground Fault Circuit Interrupter (GFCI) is a device that quickly breaks an electrical circuit to prevent serious harm from an ongoing electric shock.

• GFCIs are commonly used in areas where water and electricity may come into contact, such as bathrooms, kitchens, and outdoor outlets.

• They work by constantly mo...read more
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Q3. When the line tester shows in both phase and neutral in the line should you check?
Ans. 
Yes, you should check for a possible short circuit or reversed polarity.
• Check for a possible short circuit in the wiring

• Check for reversed polarity in the electrical connections

• Ensure proper grounding of the system

• Verify the connections at the distribution board

• Consult with a senior electrician if unsure
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Q4. Says the 10 safe method when you work on electrical pannel?
Ans. 
The 10 safe methods when working on an electrical panel include proper training, de-energizing the panel, using appropriate PPE, and following lockout/tagout procedures.
• Ensure you are properly trained and qualified to work on electrical panels.

• Always de-energize the panel before starting any work.

• Use appropriate personal protective equipment (PPE) such as insulated gloves and safety glasses.

• Follow lockout/tagout proced...read more
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Q5. How many mm cable is suitable for the 15 Hp induction motor
Ans. 
The suitable cable size for a 15 Hp induction motor would typically be around 10 mm.
• The cable size for a motor depends on factors like the motor's power rating, voltage, and distance from the power source.

• For a 15 Hp motor, a cable size of around 10 mm would be suitable to handle the power requirements.

• It is important to consult with a qualified electrician or refer to the motor manufacturer's guidelines for the exact
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Q1. What is electricity.
Ans. 
Electricity is the flow of electrons through a conductor.
• Electricity is a form of energy that powers most of our modern devices.

• It is created by the movement of electrons from one atom to another.

• Electricity can be generated from various sources such as coal, wind, solar, and hydro power.

• It can be dangerous if not handled properly and can cause electric shock or fire.

• Electricity is measured in units of volts, amps, and
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Q1. What are your strengths and weaknesses?
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