Oil And Natural Gas Corporation Refrigeration and Air Conditioning Mechanic Interview Questions and Answers

Q1. How much you earn
Ans. 
I earn a competitive salary based on my experience and qualifications.
• My salary is based on my experience and qualifications

• I receive compensation for my work as an Instrumentation Technician

• I am satisfied with my current salary
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Q1. Any instrumentation equipment explain
Ans. 
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
Ans. 
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
Ans. 
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. Tell me about a project that you worked on
Ans. 
I worked on a project to develop a mobile app for a local restaurant.
• Developed a user-friendly mobile app for a local restaurant

• Implemented features such as menu browsing, online ordering, and reservation booking

• Collaborated with a team of developers and designers to ensure smooth functionality and appealing design

• Conducted user testing and gathered feedback to make necessary improvements

• Successfully launched the app o...read more
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Q2. How does a bjt work?
Ans. 
A BJT is a three-layer semiconductor device that amplifies current.
• Consists of a base, collector, and emitter

• Current flows from the collector to the emitter

• The base controls the amount of current flowing through the transistor

• Can be used as an amplifier or switch

• Examples include audio amplifiers and digital logic circuits
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