Steel Authority Of India Electrical & Instrumentation Engineer Interview Questions and Answers

Q1. What is NGR and why do we use this, and how does it works?
Ans. 
NGR stands for Neutral Grounding Resistor. It is used to limit the fault current in a power system.
• NGR is connected between the neutral point of a transformer or generator and the ground.

• It limits the fault current by increasing the impedance of the neutral point.

• NGR protects the equipment from damage and reduces the risk of electrical shock to personnel.

• It works by limiting the current flow through the neutral point d...read more
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Q2. What do you do at site, explain it in brief?
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Q1. Introduction, wheather, salary discussion?
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Q1. Electrical and instumentation
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Q1. Instructions technician
Ans. Instrument technician is tempreture flow megarment pressure
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Q2. Instructions questions
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Q3. What is a thermocouple?
Ans. 
A thermocouple is a temperature sensor that consists of two different metals joined together at one end.
• It generates a voltage proportional to the temperature difference between the two junctions.

• It is commonly used in industrial and scientific applications to measure temperature.

• Different types of thermocouples are available, each with its own temperature range and accuracy.

• Examples of thermocouple types include K, J,...read more
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Q4. Are there standards governing types of thermocouple
Ans. 
Yes, there are standards governing types of thermocouple.
• The International Electrotechnical Commission (IEC) and the American National Standards Institute (ANSI) have established standards for thermocouples.

• These standards define the types of thermocouples, their temperature ranges, and their accuracy.

• Examples of thermocouple types include Type J, Type K, Type T, and Type E.

• Each type has a different combination of meta...read more
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Q5. Why are there straight lengths important in installing a vortex orifice devices
Ans. 
Straight lengths are important in installing vortex orifice devices to ensure accurate flow measurement.
• Straight lengths help to stabilize the flow profile before it reaches the device

• They prevent turbulence and eddies that can affect the accuracy of the measurement

• The length required depends on the type of device and the flow conditions

• For example, a vortex flow meter may require 10 diameters of straight pipe upstream...read more
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Q1. Question in pneumatic actuator, FT, PT & DPT ?
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Q2. Question on sequence of Hot blast stove and BLT
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Q1. What is my experience as a instrumentation technician ?
Ans. 
I have 5 years of experience as an instrumentation technician in the oil and gas industry.
• I have extensive knowledge of various types of instruments used in the industry, such as pressure gauges, flow meters, and temperature sensors.

• I am skilled in calibrating and troubleshooting instruments to ensure accurate readings and optimal performance.

• I have experience in installing and maintaining instrumentation systems, incl...read more
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Q1. Control system analysis
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Q2. Power electronics
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Q3. SCR working and control system
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Q4. ESP working and control system analysis
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Q1. Tell me about yourself.
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Q2. Why are you looking for a change?
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Q3. What is your family background?
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Q4. Share details of your previous job.
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Q5. What are your salary expectations?
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Q1. Electrical substation
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Q2. Power plant Protection
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Control valve, transmitter,ps gauge, temperature transmitter,o2,on off valve