Cogent Automation Interview Questions and Answers

Go with basic stuff clear, as for advanced stuff they are also not clear

Q1. Salary discussion
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Q2. What is your current CTC
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Q3. What is your expected CTC
Ans. 
My expected CTC is based on my experience, skills, and the market rate for Softwaretest Engineers.
• My expected CTC is in line with industry standards for Softwaretest Engineers.

• I have taken into consideration my years of experience and expertise in software testing.

• I am open to negotiation based on the overall compensation package offered by the company.
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Q4. Whay you decided to change Job
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Seeking new challenges and opportunities for growth in a different environment.
• Desire for career advancement

• Interest in working with new technologies

• Seeking better work-life balance

• Company restructuring or downsizing

• Relocation to a new city
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Q1. Difference between open loop and closed loop?
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Open loop does not have feedback mechanism, while closed loop does.
• Open loop system does not have a feedback mechanism to adjust the output based on the input.

• Closed loop system uses feedback from the output to control the input and maintain desired output.

• Open loop systems are simpler and less accurate, while closed loop systems are more complex but more accurate.

• Example: A toaster is an open loop system as it does no...read more
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Q2. What is equation of PID controller
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The equation of a PID controller is a control loop feedback mechanism used in industrial control systems.
• The equation for a PID controller is: u(t) = Kp*e(t) + Ki*∫e(t)dt + Kd*de(t)/dt

• Kp, Ki, and Kd are the proportional, integral, and derivative gains respectively

• The proportional term Kp reacts to the current error value

• The integral term Ki reacts to the accumulation of past errors

• The derivative term Kd reacts to the r
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Q3. Name any two pressure sensors
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Two common pressure sensors are piezoresistive sensors and capacitive sensors.
• Piezoresistive sensors: measure pressure by changes in electrical resistance

• Capacitive sensors: measure pressure by changes in capacitance
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Q4. Difference between open loop and closed loop
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Open loop does not have feedback mechanism, while closed loop does.
• Open loop system does not have a feedback mechanism to adjust the output based on the input.

• Closed loop system uses feedback from the output to adjust the input and maintain desired output.

• Examples of open loop systems include a toaster or a washing machine with a timer setting.

• Examples of closed loop systems include a thermostat controlling room temper
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Q1. Automation protocols used commonly ?
Ans. 
Commonly used automation protocols include Modbus, Profibus, Ethernet/IP, and DeviceNet.
• Modbus is a serial communication protocol commonly used in industrial automation.

• Profibus is a fieldbus communication protocol used in process automation.

• Ethernet/IP is a protocol used for industrial automation networking.

• DeviceNet is a communication protocol used in factory automation for connecting industrial devices.
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Q1. Its all technical depending on technology
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Q1. Most likely technical and aptitude and attitude.
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Q1. After shortlisting of resume, there was a technical interview -1 followed by an interview with manager for technical analysis Next was hr round.
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Q2. Design related questions on som, mechanical designs and the application of these concepts in your previous experience
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Application of technical knowledge in your previous experience

Q1. What is transformer
Ans. 
A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.
• Consists of two coils of wire (primary and secondary) wrapped around a core

• Primary coil receives electrical input and creates a magnetic field

• Magnetic field induces a voltage in the secondary coil, transferring energy

• Used in power distribution, voltage regulation, and isolation

• Examples: ...read more
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Q2. Difference between plc and dcs
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PLC is used for discrete control, DCS is used for process control
• PLC is typically used for discrete control applications, such as manufacturing assembly lines

• DCS is typically used for process control applications, such as chemical plants or power plants

• PLC is more modular and can be easily expanded or modified

• DCS is more centralized and allows for better coordination of multiple control loops

• PLC programming is usually ...read more
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Q3. What is SCADA and where we use
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SCADA stands for Supervisory Control and Data Acquisition, used for monitoring and controlling industrial processes.
• SCADA systems are used in industries such as power plants, water treatment facilities, and manufacturing plants.

• They collect data from sensors and equipment, display it in a graphical interface, and allow operators to control the processes remotely.

• SCADA systems help improve efficiency, reduce downtime, a
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Q1. NDT,ASTM,ASME,AWS,LAB,FOUNDRY
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Q2. NDT QA Lab Mechanical Testing,Heat Treatment
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Q1. 1. Basic OOP Concepts 2. Difference between structure and class in terms of constructor 3. Can members of structure be defined as private 4. What's lambda function and it's real life use case 5. Difference...read more
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Q2. 6. What's O(n) in time and space complexity
Ans. 
O(n) refers to linear time and space complexity.
• O(n) means that the time or space required by an algorithm grows linearly with the size of the input.

• It implies that the algorithm's performance is directly proportional to the input size.

• For example, if an algorithm takes 10 seconds to process 100 elements, it would take 20 seconds to process 200 elements.

• O(n) complexity is considered efficient and desirable in most case
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Q1. Basic DOL diagram and drawing DOL Circuit
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Q2. How to select plc and cards
Ans. 
PLC and card selection depends on the application requirements and budget.
• Identify the required inputs and outputs

• Consider the communication protocols needed

• Evaluate the processing power and memory requirements

• Determine the budget and cost of ownership

• Research and compare different brands and models

• Consider the availability of technical support and spare parts

• Ensure compatibility with existing systems

• Consider the envir
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