Gulf Asia Contracting QC Inspector Instrumentation Interview Questions and Answers

Q1. Ritik Kumar Maurya
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Q2. Indian oil corporation limited Panipat
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Q3. One year apprentice training in Instrumentation and control
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Q1. Instrument question
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Q2. Pt,rtd, vibration, other
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Q1. Any instrumentation equipment explain
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Instrumentation equipment refers to devices used to measure, control, and monitor various parameters in industrial processes.
• Instruments like pressure gauges, flow meters, and temperature sensors are commonly used in instrumentation.

• Control valves and actuators are used to regulate the flow of fluids or gases.

• Programmable Logic Controllers (PLCs) are used for automation and control of processes.

• Analytical instruments l...read more
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Q2. PLC and scada and DCS
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Q3. PLC panel wiring diagram
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A PLC panel wiring diagram is a visual representation of the electrical connections and components in a programmable logic controller panel.
• A PLC panel wiring diagram shows the layout and connections of various components such as power supplies, input/output modules, relays, and sensors.

• It helps technicians understand how the electrical signals flow within the panel and how different devices are interconnected.

• The diag...read more
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Q4. What is the control valve
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A control valve is a device used to regulate the flow of fluid or gas in a process system.
• Control valves are commonly used in industries such as oil and gas, chemical, and power plants.

• They can be operated manually or automatically through an electrical or pneumatic signal.

• Control valves consist of a valve body, actuator, and positioner.

• They can control variables such as flow rate, pressure, temperature, and level.

• Exam...read more
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Q5. What is the transmitter
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A transmitter is a device used in instrumentation to convert a physical measurement into an electrical signal.
• Transmitters are commonly used in industries such as oil and gas, chemical, and power plants.

• They are used to measure variables such as pressure, temperature, flow rate, level, and pH.

• Transmitters typically consist of a sensing element, signal conditioning circuitry, and an output signal.

• The sensing element det...read more
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Q6. What is the flow meters
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Flow meters are devices used to measure the flow rate of a fluid or gas.
• Flow meters are commonly used in industries such as oil and gas, water treatment, and manufacturing.

• They can measure flow rates in various units such as liters per minute, cubic meters per hour, or gallons per minute.

• Different types of flow meters include electromagnetic, ultrasonic, turbine, and differential pressure flow meters.

• Flow meters can be...read more
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Q1. Instructions technician
Ans. Instrument technician is tempreture flow megarment pressure
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Q2. Instructions questions
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Q3. What is a thermocouple?
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A thermocouple is a temperature sensor that consists of two different metals joined together at one end.
• It generates a voltage proportional to the temperature difference between the two junctions.

• It is commonly used in industrial and scientific applications to measure temperature.

• Different types of thermocouples are available, each with its own temperature range and accuracy.

• Examples of thermocouple types include K, J,...read more
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Q4. Are there standards governing types of thermocouple
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Yes, there are standards governing types of thermocouple.
• The International Electrotechnical Commission (IEC) and the American National Standards Institute (ANSI) have established standards for thermocouples.

• These standards define the types of thermocouples, their temperature ranges, and their accuracy.

• Examples of thermocouple types include Type J, Type K, Type T, and Type E.

• Each type has a different combination of meta...read more
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Q5. Why are there straight lengths important in installing a vortex orifice devices
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Straight lengths are important in installing vortex orifice devices to ensure accurate flow measurement.
• Straight lengths help to stabilize the flow profile before it reaches the device

• They prevent turbulence and eddies that can affect the accuracy of the measurement

• The length required depends on the type of device and the flow conditions

• For example, a vortex flow meter may require 10 diameters of straight pipe upstream...read more
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Control valve, transmitter,ps gauge, temperature transmitter,o2,on off valve

Q1. 1) Introduce yourself
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Q2. 2) What is bourdon type pressure gauge?
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A bourdon type pressure gauge is a mechanical device used to measure pressure in a system.
• Consists of a curved tube that straightens with pressure, causing a pointer to move on a dial

• Commonly used in industrial applications for measuring pressure in pipelines, tanks, and machinery

• Available in various designs such as C-type, spiral, and helical bourdon tubes
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Q3. 3) What is the liquid filled in pressure gauge?
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The liquid filled in pressure gauge is typically glycerin or silicone oil.
• Common liquids used are glycerin and silicone oil

• The liquid helps dampen the effects of vibration and pulsation on the gauge

• It also helps lubricate the internal components of the gauge

• The choice of liquid depends on the application and operating conditions
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Q4. 4) What is functioning of nucleonic type radar level transmitter and for which applications?
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Nucleonic type radar level transmitter uses radioactive sources to measure level of liquids or solids in tanks. It is commonly used in industries like oil and gas, chemical, and power plants.
• Uses radioactive sources to emit gamma rays towards the material being measured

• The gamma rays are then reflected back to the detector, with the time taken for the reflection used to calculate the level of the material

• Suitable for m...read more
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Q5. 5) Classification of final control element
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Final control elements are classified based on their action, type of motion, and type of signal.
• Based on action: On-off control, proportional control, PID control

• Based on type of motion: Linear motion, rotary motion

• Based on type of signal: Pneumatic, hydraulic, electric

• Examples: Control valves, actuators, solenoid valves
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Q6. 6) Working of solenoid valve
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A solenoid valve is an electromechanically operated valve that is commonly used to control the flow of liquids or gases.
• Solenoid valves use an electromagnetic coil to open or close the valve mechanism.

• They are commonly used in applications such as controlling water flow in irrigation systems, gas flow in HVAC systems, and fluid control in industrial processes.

• When the coil is energized, it creates a magnetic field that...read more
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Q7. 7) Working of float type level measurement
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Float type level measurement works by using a float that rises or falls with the liquid level, activating a switch or transmitter.
• Float rises or falls with the liquid level

• Float activates a switch or transmitter

• Commonly used in tanks and vessels for level control

• Examples: magnetic float level switch, displacer level transmitter
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Q8. 8) Different units of pressure
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Units of pressure include psi, bar, atm, mmHg, and Pa.
• PSI (pounds per square inch) is commonly used in the United States

• Bar is a metric unit of pressure equal to 100 kilopascals

• Atmosphere (atm) is the pressure exerted by the weight of the Earth's atmosphere

• Millimeters of mercury (mmHg) is commonly used in measuring blood pressure

• Pascal (Pa) is the SI unit of pressure
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Q9. 9) Classification of transducers
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Transducers can be classified based on various criteria such as principle of operation, electrical output, and application.
• Classification based on principle of operation: resistive, capacitive, inductive, piezoelectric

• Classification based on electrical output: analog, digital

• Classification based on application: temperature, pressure, level, flow

• Other classifications: active vs. passive, contact vs. non-contact
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Q10. 10) For setting up chemical plant, which type of designing tools & drawings required?
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Designing tools and drawings required for setting up a chemical plant include P&IDs, PFDs, equipment layouts, and instrumentation diagrams.
• Process and Instrumentation Diagrams (P&IDs) are essential for showing the interconnection of process equipment and the instrumentation used to control the process.

• Piping and Instrumentation Diagrams (P&IDs) show the piping of the process flow together with the installed equipment a...read more
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Q1. 1) Tell me something which is not mentioned in your resume
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Q2. 2) Tell me about your family background
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Q3. 3) Tell me about hobbies and Interest
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Q4. 4) Analyzation skills & Achievements
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Q1. All instrumentauon related like flow,pressure,temprature,level.
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