Rimjhim Ispat QA QC Engineer Interview Questions and Answers

Q1. What is the theory behind the transformer’s operation principle?
Ans. 
A transformer operates on the principle of electromagnetic induction to transfer electrical energy between two or more circuits.
• Transformers consist of two coils of wire, known as the primary and secondary coils, wrapped around a core made of ferromagnetic material.

• When an alternating current flows through the primary coil, it creates a changing magnetic field in the core.

• This changing magnetic field induces a voltage ...read more
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Q2. How and why is a transformer’s rated capacity expressed?
Ans. 
A transformer's rated capacity is expressed in terms of its maximum power output, typically in kilovolt-amperes (kVA).
• Rated capacity is expressed in kVA to indicate the maximum power output the transformer can handle.

• This rating helps determine the appropriate size of transformer needed for a specific application.

• For example, a transformer with a rated capacity of 500 kVA can handle a maximum power output of 500 kilovo...read more
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Q1. Iron making related questions
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Q1. Safety rules and your general knowledge
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Q1. Different between LT and HT ?
Ans. 
LT stands for Low Tension and HT stands for High Tension. They refer to different voltage levels used in electrical systems.
• LT refers to voltage levels below 1000V, while HT refers to voltage levels above 1000V.

• LT is commonly used in residential and small commercial buildings, while HT is used in industrial and large commercial buildings.

• LT systems are generally safer and easier to maintain compared to HT systems.

• Examp...read more
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Q2. What is circuit breakers ?
Ans. 
Circuit breakers are electrical switches designed to protect electrical circuits from damage caused by overload or short circuit.
• Circuit breakers automatically interrupt the flow of electricity when a fault is detected.

• They can be reset manually after tripping to restore power.

• Common types include thermal-magnetic, magnetic, and hydraulic-magnetic circuit breakers.

• Examples include miniature circuit breakers (MCBs) and
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Q3. What is the role of a diodein an electrical circuit
Ans. 
A diode is an electronic component that allows current to flow in one direction only.
• Diodes are commonly used to convert AC to DC in power supplies.

• They are also used to protect circuits from reverse polarity.

• Diodes have a forward voltage drop, typically around 0.7V.

• They can be used in rectifier circuits to convert AC to DC.

• Diodes are also used in signal processing circuits to separate AC and DC components.
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Q4. Explain the difference between ac and dc
Ans. 
AC and DC are two types of electrical current with different characteristics.
• AC stands for alternating current, which periodically changes direction.

• DC stands for direct current, which flows in one direction.

• AC is commonly used in household appliances and power distribution systems.

• DC is commonly used in batteries and electronic devices.

• AC can be easily converted to different voltage levels using transformers.

• DC is mor...read more
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Q5. Why you have choose engineering ?
Ans. 
I chose engineering because I have always been fascinated by how things work and wanted to use my problem-solving skills to make a positive impact on the world.
• Passion for understanding how things work

• Desire to use problem-solving skills

• Interest in making a positive impact on the world
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Q6. What do you know about this JSW steel
Ans. 
JSW Steel is one of India's leading steel producers with a strong presence in various sectors.
• JSW Steel is a part of the JSW Group, a conglomerate with interests in steel, energy, infrastructure, cement, and more.

• The company has multiple manufacturing plants in India, including in Karnataka, Maharashtra, and Tamil Nadu.

• JSW Steel produces a wide range of products including hot-rolled coils, cold-rolled coils, galvanized...read more
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Basic electrical questions , some drive related questions and some questions come from electrical machines

Q1. Sc test & oc test of TFR, differential relay connection and how it protects from fault, questions related from my internship programme about OPTCL, and. What are the types motors and which types of motors ...read more
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Q1. Stress strain diagram
Ans. 
Stress strain diagram shows the relationship between stress and strain in a material.
• Shows how a material deforms under stress

• Yield point indicates when material starts to deform permanently

• Ultimate strength is the maximum stress a material can withstand

• Failure point is when material breaks
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