Sun Flag Steel Interview Questions and Answers

Q1. What is the working principle of an overload relay?
Ans. 
An overload relay works by monitoring the current flowing through a motor and tripping when the current exceeds a set limit.
• Monitors the current flowing through a motor

• Trips and interrupts power when current exceeds a set limit

• Protects the motor from damage due to overloading

• Can be reset manually after tripping
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Q2. How is insulation resistance measured?
Ans. 
Insulation resistance is measured using a megohmmeter to apply a high voltage and measure the resistance of the insulation material.
• Use a megohmmeter to apply a high voltage to the insulation material

• Measure the resistance of the insulation material to determine its insulation resistance

• Insulation resistance is typically measured in megaohms (MΩ)

• Regular insulation resistance testing helps prevent electrical failures an
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Q1. How to face Electrical safety
Ans. 
Electrical safety can be ensured by following proper procedures, using appropriate equipment, and staying vigilant.
• Always use insulated tools when working on live circuits

• Ensure circuits are de-energized before working on them

• Wear appropriate personal protective equipment (PPE) such as gloves and goggles

• Regularly inspect and maintain electrical equipment to prevent malfunctions

• Follow safety guidelines and procedures ou
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Q2. What is the process for performing preventive maintenance on a motor?
Ans. 
Preventive maintenance on a motor involves inspecting, cleaning, lubricating, and testing the motor to ensure optimal performance and prevent breakdowns.
• Inspect the motor for any signs of wear or damage

• Clean the motor and its components to remove dirt and debris

• Lubricate moving parts to reduce friction and wear

• Test the motor's performance using appropriate tools and equipment

• Replace any worn out parts or components as
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Q1. What strategies can you use to succeed in an interview?
Ans. 
To succeed in an interview, it is important to prepare thoroughly, practice common interview questions, research the company, dress professionally, and demonstrate enthusiasm and confidence.
• Thoroughly research the company and the position you are applying for

• Practice common interview questions and prepare examples of your skills and experiences

• Dress professionally and appropriately for the interview

• Demonstrate enthusia...read more
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Q2. What is the working principle of a star-delta starter?
Ans. 
A star-delta starter is used to reduce the starting current of a motor by initially connecting the motor windings in a star configuration and then switching to a delta configuration.
• The motor windings are initially connected in a star configuration during starting to reduce the starting current.

• After a certain period, the windings are switched to a delta configuration to achieve full speed and torque.

• This transition fr...read more
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Q1. What are undervoltage faults?
Ans. 
Undervoltage faults occur when the voltage in a system drops below the normal operating level, leading to potential equipment damage or malfunction.
• Undervoltage faults can be caused by issues such as power supply fluctuations, equipment failures, or overloaded circuits.

• These faults can lead to equipment damage, reduced efficiency, or complete shutdown of systems.

• Examples include a power surge causing a drop in voltage,...read more
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Q2. What are overvoltage faults?
Ans. 
Overvoltage faults are electrical faults that occur when the voltage in a circuit exceeds the normal operating range.
• Overvoltage faults can damage electrical components and equipment.

• They can be caused by lightning strikes, power surges, or faulty equipment.

• Protective devices like surge protectors and voltage regulators can help prevent overvoltage faults.

• Examples include a power surge from a lightning strike damaging ...read more
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Q1. What is the purpose of a thermal relay?
Ans. 
A thermal relay is used to protect electrical circuits from overloads by monitoring the temperature of the circuit and tripping when it exceeds a certain threshold.
• Monitors the temperature of the electrical circuit

• Trips and disconnects the circuit when temperature exceeds a set limit

• Protects against overloads and overheating

• Commonly used in motor protection applications
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Q2. What is an RDOL starter?
Ans. 
An RDOL starter is a type of reduced voltage starter used in electrical systems to reduce the starting current and torque of a motor.
• RDOL stands for Reduced Direct Online starter.

• It is used to start induction motors in a controlled manner.

• RDOL starters reduce the voltage supplied to the motor during starting to limit the inrush current.

• This helps in reducing mechanical stress on the motor and connected equipment.

• Common...read more
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Q1. I am krishna murthy p
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Q2. I am Instrested bmm ispat company one of the best company
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Q3. One opportunity given sir
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Q4. Electrical engineering
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Q5. I am name krishna murthy p i am stady diploma electrical engineering I am experience totally 8 years
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Q1. What has been your experience as an electrical engineer working in a supervisory role?
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Q2. I am always done my work on time
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Q3. My work is always finishing and facing work
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Q4. I am all electrical work complete done
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Diploma mechanical engineering 2022

Q1. Apne baare me batwo 5 loose point 5 strength.
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Q2. Women empowerment se kya samajhte hai.
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Q3. Technical knowledge kitna hai tumhe.
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Q4. Aapke subjects are hobby ke baare main batao.
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Q1. Metallurgy engineering related.
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Q2. Steel making shop operating related.
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Q3. EAF Operation related.
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Q1. What is TTT DIAGRAM and its use
Ans. 
TTT diagram is a Time-Temperature-Transformation diagram used in materials science to understand the transformation of phases in a material.
• TTT diagram shows the relationship between temperature, time, and phases in a material during cooling or heating.

• It helps in predicting the microstructure and properties of a material based on its cooling rate.

• TTT diagrams are commonly used in heat treatment processes for metals li...read more
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Q2. What is difference between ceramic and steel
Ans. 
Ceramic is a non-metallic material made from clay, while steel is a metallic material primarily made from iron and carbon.
• Ceramic is non-metallic, while steel is metallic

• Ceramic is made from clay, while steel is primarily made from iron and carbon

• Ceramic is typically more brittle than steel

• Steel is stronger and more durable than ceramic

• Ceramic is often used for decorative purposes or in high-temperature applications, w...read more
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Q3. What is fatigue and what is creep in materials
Ans. 
Fatigue is the weakening of a material due to repeated loading, while creep is the gradual deformation of a material under constant stress.
• Fatigue is the process of progressive and localized structural damage that occurs when a material is subjected to cyclic loading.

• Creep is the time-dependent deformation of a material under constant load or stress.

• Fatigue failure is often characterized by crack initiation and propaga...read more
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Q4. What are the different types of Steel making
Ans. 
Different types of steel making include basic oxygen furnace, electric arc furnace, and open hearth furnace.
• Basic Oxygen Furnace (BOF) - uses oxygen to reduce the carbon content in the steel

• Electric Arc Furnace (EAF) - uses electricity to melt scrap steel and produce new steel

• Open Hearth Furnace - uses a fuel-air mixture to heat the steel and remove impurities

• Other methods include Bessemer process, direct reduced iron,
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Q5. Why do we use alloying elements during Steel making and what are their applications
Ans. 
Alloying elements are used in steel making to improve properties like strength, hardness, corrosion resistance, and machinability.
• Alloying elements are added to steel to enhance specific properties such as strength, hardness, toughness, and corrosion resistance.

• Common alloying elements include chromium, nickel, manganese, molybdenum, and vanadium.

• Chromium is added to improve corrosion resistance, nickel for toughness, ...read more
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Q6. What is SN curve ?
Ans. 
SN curve is a graphical representation of the relationship between stress and fatigue life of a material.
• SN curve shows the number of cycles to failure (N) against the applied stress (S).

• It helps in determining the fatigue life of a material under different stress levels.

• Materials with higher fatigue strength have a steeper slope on the SN curve.

• SN curves are commonly used in engineering to predict the durability of ma
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Q7. What is the composition of pigiron
Ans. 
Pig iron is an intermediate product of the iron industry, made by smelting iron ore in a blast furnace.
• Pig iron is typically around 92-94% iron, with varying amounts of carbon, silicon, manganese, sulfur, and phosphorus.

• It is brittle and not suitable for use in its raw form, but can be further processed into wrought iron or steel.

• The carbon content of pig iron gives it a high carbon equivalent, making it ideal for cast...read more
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Q8. What is lever rule?
Ans. 
Lever rule is a principle used in material science to determine the relative amounts of two phases in a two-phase system.
• Lever rule is used to calculate the fraction of each phase in a two-phase system based on the weight or volume percentages of the phases.

• It is commonly used in metallurgy, ceramics, and other material science fields.

• The lever rule equation is: L = (C - A) / (B - A), where L is the fraction of one pha...read more
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