Prama Hikvision India Senior Executive Engineer Interview Questions and Answers

Q1. What is an operational amplifier (op-amp)?
Ans. 
An operational amplifier (op-amp) is a high-gain electronic voltage amplifier with differential inputs and a single output.
• Op-amps are commonly used in analog circuits for amplification, filtering, and signal conditioning.

• They have a very high input impedance and a very low output impedance.

• Op-amps are often used in instrumentation amplifiers, active filters, and voltage followers.

• Popular op-amp models include the LM74...read more
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Q2. What is the voltage divider concept and its mathematical expression?
Ans. 
Voltage divider concept is a circuit that divides the input voltage into smaller output voltages using resistors.
• Voltage divider is a simple circuit made up of two resistors in series.

• The output voltage is determined by the ratio of the two resistors.

• Mathematically, Vout = Vin * (R2 / (R1 + R2)).

• It is commonly used in electronic circuits to provide a specific voltage level for components.

• Example: A 10V input voltage di...read more
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Q3. Explain Current density concept.
Ans. 
Current density is the amount of electric current flowing through a unit area.
• Current density is defined as the amount of electric current flowing through a conductor per unit area.

• It is typically denoted by the symbol J and is measured in Amperes per square meter (A/m^2).

• Higher current density means more current flowing through a smaller area, leading to higher heat generation.

• Current density is an important factor in...read more
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Q4. Transistor Family symbols
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Q5. Op amp application.
Ans. 
Op amp application involves using operational amplifiers in various electronic circuits for amplification, filtering, signal conditioning, etc.
• Op amps are commonly used in audio amplifiers to increase the amplitude of audio signals.

• They are also used in instrumentation amplifiers for precise measurement of small signals.

• Op amps can be used in active filters to remove unwanted frequencies from a signal.

• They are used in ...read more
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Q1. Quality management system overview
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Quality management system is a framework that helps organizations ensure that their products and services meet customer requirements.
• QMS includes processes, procedures, and resources for implementing quality management.

• It focuses on meeting customer expectations and continuously improving processes.

• Examples of QMS include ISO 9001 certification and Six Sigma methodology.
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Q2. What is lean manufacturing
Ans. 
Lean manufacturing is a systematic method for eliminating waste within a manufacturing process to improve efficiency and quality.
• Focuses on continuous improvement

• Eliminates waste in all forms (time, resources, etc.)

• Involves all employees in the process

• Uses tools like 5S, Kanban, and value stream mapping

• Aims to deliver maximum value to the customer with minimum waste
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Q3. What are 7 quality pillars
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The 7 quality pillars are key principles that guide quality management in an organization.
• Customer focus - meeting customer needs and expectations

• Leadership - establishing unity of purpose and direction

• Engagement of people - involving and empowering employees

• Process approach - managing activities as processes

• Improvement - continually improving processes and products

• Evidence-based decision making - using data and inform...read more
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Q1. Family background
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Q2. Leadership questions
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Q1. What is the inprocsss Quality standard
Ans. 
The in-process quality standard is a set of guidelines and criteria that ensure quality control during the manufacturing process.
• It includes monitoring and controlling the production process to ensure that the final product meets the required quality standards.

• It involves regular inspections and testing of the product at various stages of production.

• It helps to identify and correct any defects or issues before the fina...read more
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Q2. Quality standards are defined as documents that provide requirements, specifications, guidelines, or characteristics that can be used consistently to ensure that materials, products, processes, and service...read more
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Q1. OEE ,Tact time, Cycle time study
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Q1. TPS activities,7waste
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Line related question

Q1. Why are only trainee
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Q2. How to join parmanent employee
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Q1. In siemens if we have a HMI program for some other HMI size (KTP-1200) and we want to convert that program into different size HMI (KTP-700). Then how we will do that ?
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Q2. How to troubleshoot issue in automation ?
Ans. 
To troubleshoot automation issues, start by identifying the root cause, reviewing logs, checking configurations, and testing in different environments.
• Identify the specific issue or error message

• Review automation logs for any errors or warnings

• Check automation configurations for any mistakes or inconsistencies

• Test the automation in different environments to isolate the issue

• Collaborate with team members or stakeholders
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Q3. Knowledge of scripts into programming or SQL ?
Ans. 
Knowledge of scripting languages like Python or SQL is essential for a Senior Engineer role.
• Proficiency in scripting languages like Python, Bash, PowerShell, etc. is important for automating tasks and processes.

• Understanding of SQL for database querying and manipulation is crucial for data-driven applications.

• Experience with writing and executing scripts to improve system efficiency and performance.

• Ability to troublesh...read more
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Q1. Salary negotiation.
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