BVISHAL Oil & Energy Interview Questions and Answers

C programming coding

Q1. Introduction , Family background , why iasys, why should hire you, salary expectation
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Q1. Introduction, in which programming language are you comfortable( 45 min)
Ans. 
I am comfortable with C, C++, and Python for embedded software development.
• Proficient in C for low-level programming

• Experienced in C++ for object-oriented design

• Skilled in Python for scripting and automation tasks
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Q2. What is class object, inheritance, function overloading ,function overriding, difference between encapsulation and abstraction, volatile keyword
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Class object is an instance of a class, inheritance allows a class to inherit properties and methods from another class, function overloading is defining multiple functions with the same name but different parameters, function overriding is redefining a function in a subclass, encapsulation is bundling data and methods that operate on the data into a single unit, abstraction is hiding the implementation details and sho...read more
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Q3. What is pointer and it's type
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A pointer is a variable that stores the memory address of another variable.
• Types of pointers include null pointers, void pointers, function pointers, and array pointers.

• Example: int *ptr; // pointer to an integer variable

• Example: char *str = 'hello'; // pointer to a character array
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Q4. Static function with implementation , virtual function with code, multilevel inheritance implementation
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Q5. Projects deep, what challenges faced and how to overcome, your role in project
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Q1. Technical 2 (1 hour)
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Q2. Introduction, what is Embedded system, Project deep
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Q3. What is semaphore and mutex, binary semaphore, thread and process
Ans. 
Semaphores and mutex are synchronization mechanisms in multithreading. Threads are lightweight processes, while processes are independent execution units.
• Semaphore: used to control access to a shared resource by multiple threads. Example: controlling access to a printer in a networked system.

• Mutex: similar to a semaphore but only allows one thread to access a resource at a time. Example: protecting a critical section o...read more
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Q4. How to stored data in memory , Interrupt service routine ,interrupt latency, UART,SPI,
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Q5. Watchdog timer, 8051 microcontroller architecture, volatile keyword, static function, global and local variable
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Q1. What is main reason for belt joint failure?
Ans. 
The main reason for belt joint failure is usually due to improper installation or maintenance.
• Improper installation of the belt joint, such as incorrect alignment or tensioning

• Lack of proper maintenance, leading to wear and tear of the joint

• Use of low-quality materials for the joint

• Excessive load or stress on the belt joint

• Environmental factors like temperature or humidity affecting the joint
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Q2. What was the alignment maximum tolerance?
Ans. 
The alignment maximum tolerance refers to the maximum allowable deviation from the specified alignment.
• Alignment maximum tolerance is the maximum allowable deviation from the specified alignment.

• It is typically expressed in terms of a percentage or a specific measurement unit.

• For example, a machine part may have an alignment maximum tolerance of +/- 0.005 inches.

• Exceeding the alignment maximum tolerance can lead to per
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Q3. How to replace the bucket wheel reclaimer luffing cylinder?
Ans. 
To replace the bucket wheel reclaimer luffing cylinder, follow these steps.
• 1. Shut down the machine and ensure all power sources are disconnected.

• 2. Remove any surrounding components that may obstruct access to the luffing cylinder.

• 3. Use appropriate tools to disconnect the hydraulic hoses and fittings from the cylinder.

• 4. Support the weight of the cylinder as it is removed to prevent damage to surrounding components.

• 5...read more
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Q4. What is different between JSA and HIRA?
Ans. 
JSA stands for Job Safety Analysis, focusing on specific job tasks, while HIRA stands for Hazard Identification and Risk Assessment, focusing on overall workplace hazards.
• JSA is task-specific, focusing on individual job tasks and potential hazards

• HIRA is broader, looking at overall workplace hazards and assessing risks

• JSA involves breaking down a job into steps and identifying potential hazards for each step

• HIRA involv...read more
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Q5. How create a PR in SAP?
Ans. 
To create a PR in SAP, you can use transaction code ME51N or ME21N.
• Use transaction code ME51N to create a purchase requisition in SAP.

• Enter the necessary details such as material, quantity, delivery date, etc.

• Save the purchase requisition and it will be created in the system.

• Alternatively, you can also use transaction code ME21N to create a purchase order directly.
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Q6. What is procedure of pulley replacement?
Ans. 
The procedure of pulley replacement involves identifying the faulty pulley, removing the old pulley, installing the new pulley, and testing the system.
• Identify the faulty pulley by checking for any signs of wear or damage.

• Use appropriate tools to remove the old pulley, such as a pulley puller or wrench.

• Install the new pulley by aligning it properly and securing it in place.

• Test the system to ensure the new pulley is fu...read more
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Q7. Explain the procedure of PTW?
Ans. 
PTW stands for Permit to Work, a procedure used to ensure that work is carried out safely in potentially hazardous environments.
• PTW is a formal written system used to control certain types of work that are identified as potentially hazardous.

• Before starting work, a permit must be obtained from a designated authority.

• The permit outlines the work to be done, the hazards involved, and the necessary precautions to be taken...read more
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Logic test and personality test

Q1. Introduce yourself
Ans. 
I am a sustainability consultant with a background in environmental science and experience in implementing sustainable practices.
• Background in environmental science

• Experience in implementing sustainable practices

• Passionate about promoting sustainability in various industries
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Q2. Why are you interested
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Passionate about promoting sustainable practices and making a positive impact on the environment.
• Passionate about environmental conservation and sustainability

• Believe in the importance of implementing sustainable practices in businesses

• Excited about the opportunity to help organizations reduce their carbon footprint

• Previous experience in sustainability projects or initiatives
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Q1. Strength and witness
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Q2. A challenge you faced
Ans. 
I faced a challenge in my previous role when implementing a sustainability program for a large corporation.
• Resistance from upper management to allocate resources for sustainability initiatives

• Difficulty in engaging employees at all levels to participate in sustainability efforts

• Lack of buy-in from stakeholders outside of the organization

• Balancing short-term financial goals with long-term sustainability objectives
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Q1. Dumb HR will ruin the company or maybe they behave how the company wants them to behave.
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Q1. Pe 80 and p100 difference
Ans. 
PE 80 and P100 are different types of polyethylene pipes used in plumbing and construction.
• PE 80 is a type of polyethylene pipe with a minimum required strength (MRS) of 8 MPa, while P100 has an MRS of 10 MPa.

• PE 80 is commonly used for low-pressure applications such as irrigation and drainage, while P100 is used for high-pressure applications like gas distribution.

• PE 80 pipes are typically blue in color, while P100 pip...read more
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Q2. Full information in city gas distribution
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Q3. Difference between associate gas and non associate gas
Ans. 
Associate gas is a gas that is in equilibrium with the liquid phase, while non-associate gas is not in equilibrium with the liquid phase.
• Associate gas molecules are attracted to each other and tend to form a liquid phase at lower temperatures and higher pressures.

• Non-associate gas molecules do not have strong intermolecular forces and remain in the gas phase even at low temperatures and pressures.

• Examples of associate ...read more
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Q4. Laying process in mdpe
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MDPE (Medium Density Polyethylene) laying process involves preparing the trench, laying the pipe, and backfilling with suitable material.
• Prepare the trench to the required depth and width

• Lay the MDPE pipe carefully to avoid damage

• Connect the pipes using appropriate fittings and joints

• Backfill the trench with suitable material to provide support and protection to the pipe

• Compact the backfill material to prevent settling
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Q5. Gi process and gi is code
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Q1. Research and development, NPD
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Q2. Project management
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Q1. Project management
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Q2. Quality and team
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Q1. SCADA zone related
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Q2. What cybersecurity
Ans. 
Cybersecurity refers to the practice of protecting systems, networks, and data from digital attacks.
• Cybersecurity involves implementing measures to prevent unauthorized access to data and systems.

• It includes strategies such as encryption, firewalls, and intrusion detection systems.

• Regular security audits and employee training are essential components of cybersecurity.

• Examples of cybersecurity threats include malware, p...read more
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Q1. Basic details of electrical equipment
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Q2. Basic protection of electrical equipment
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