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I applied via LinkedIn and was interviewed in Apr 2023. There were 2 interview rounds.
Control valve calibration involves adjusting the valve to ensure it operates correctly and accurately.
Determine the valve's range and characteristics
Connect the valve to a calibration device
Adjust the valve's position to match the desired output
Verify the valve's accuracy and repeatability
Document the calibration process and results
The number of parts in an actuator varies depending on the type and model.
Actuators can have as few as two parts or as many as several dozen.
Common parts include a motor, gears, a control board, and a housing.
Additional parts may include sensors, limit switches, and feedback mechanisms.
The number of parts can also vary depending on the application and specific requirements.
PLC stands for Programmable Logic Controller and DCS stands for Distributed Control System.
PLC is a digital computer used for automation of electromechanical processes.
DCS is a control system used to control and monitor industrial processes.
PLC is used in discrete manufacturing industries while DCS is used in continuous process industries.
PLC is programmed using ladder logic while DCS is programmed using function block...
An instrumentation technician is responsible for installing, maintaining, and repairing various instruments and control systems.
Installing, calibrating, and troubleshooting instruments and control systems
Performing routine maintenance and repairs on instruments and control systems
Testing and inspecting instruments and control systems to ensure proper functioning
Reading and interpreting technical manuals and diagrams
Col...
To calibrate an interface level transmitter, follow these steps:
Verify the transmitter is installed correctly and the process is stable
Determine the calibration range and select appropriate calibration fluids
Fill the vessel with the calibration fluid and record the transmitter output
Adjust the transmitter to match the expected output for each calibration point
Repeat the process for multiple calibration points to ensure...
There are several types of drawings used in instrumentation.
Piping and Instrumentation Diagrams (P&IDs)
Electrical Schematics
Loop Diagrams
Wiring Diagrams
Process Flow Diagrams (PFDs)
Isometric Drawings
There are several types of pressure gauges including Bourdon tube, diaphragm, capsule, and bellows gauges.
Bourdon tube gauges are the most common and measure pressure through the movement of a curved tube.
Diaphragm gauges use a flexible membrane to measure pressure.
Capsule gauges use two diaphragms welded together to measure pressure.
Bellows gauges use a series of convolutions to measure pressure.
Other types of pressur...
Pressure units describe the measurement of force per unit area exerted by a fluid or gas.
Pressure units are used to measure the force exerted by fluids or gases on a surface.
Common pressure units include psi, bar, pascal, and torr.
Pressure can be measured using instruments such as pressure gauges and transducers.
Pressure units are important in many industries, including manufacturing, aerospace, and healthcare.
Archimedes principle states that the buoyant force on an object is equal to the weight of the fluid displaced by the object.
Buoyant force is the upward force exerted on an object submerged in a fluid.
The weight of the fluid displaced by the object is equal to the buoyant force.
Archimedes principle is used to explain why objects float or sink in fluids.
Example: A ship floats on water because the weight of the water it d
A booster relay is an electrical device used to amplify or boost a signal.
It is commonly used in control circuits to increase the strength of a signal
It can be used to control high voltage or high current devices
Examples include motor starters, solenoid valves, and lighting circuits
RTD stands for Resistance Temperature Detector and thermocouple is a temperature sensor made of two different metals.
RTD measures temperature by detecting changes in electrical resistance of a metal wire as temperature changes.
Thermocouple measures temperature by detecting changes in voltage as temperature changes.
RTD is more accurate and stable than thermocouple.
Thermocouple is cheaper and can measure a wider range of...
To check zero dp type transmitters, follow these steps:
Isolate the transmitter from the process
Ensure the transmitter is at atmospheric pressure
Verify that the output signal is reading zero
Adjust the zero if necessary
Reconnect the transmitter to the process and verify the output signal
The PLCs used in our plant are Siemens S7-300 and Allen Bradley ControlLogix. The DCS is Honeywell Experion.
Siemens S7-300 and Allen Bradley ControlLogix are the PLCs used in our plant
Honeywell Experion is the DCS used in our plant
posted on 28 Sep 2024
I applied via Approached by Company and was interviewed in Mar 2024. There was 1 interview round.
T/F stands for Transformer, which is a device used to transfer electrical energy between two or more circuits through electromagnetic induction.
T/F stands for Transformer, a device that changes the voltage of an alternating current in an electrical circuit.
Transformers are essential in power distribution systems to step up or step down voltage levels as needed.
They work on the principle of electromagnetic induction, wh...
Megger is a portable instrument used to measure the insulation resistance of electrical equipment.
Megger is used to test the insulation resistance of wires, cables, transformers, and electrical motors.
It helps in identifying any insulation breakdown or faults in the equipment.
The instrument applies a high voltage to the equipment and measures the resistance to current flow.
Megger readings are typically measured in mega
A multimeter is a versatile tool used to measure voltage, current, and resistance in electrical circuits.
A multimeter typically has a digital display to show the measured values
It can measure AC and DC voltage, current, resistance, and sometimes other parameters like capacitance and frequency
Multimeters have different settings for different types of measurements, such as voltage, current, and resistance
They often have ...
I applied via Job Portal
I applied via Recruitment Consultant and was interviewed in Aug 2021. There was 1 interview round.
I will isolate the transformer and investigate the cause of the differential trip.
Isolate the transformer from the system
Check the differential relay settings and wiring
Inspect the transformer for any physical damage or oil leaks
Check the oil level and quality
Investigate the cause of the differential trip
Take corrective actions to prevent future trips
I applied via Walk-in and was interviewed before Jul 2020. There were 4 interview rounds.
I applied via Naukri.com and was interviewed in Jan 2021. There were 3 interview rounds.
posted on 30 Apr 2021
I applied via Walk-in and was interviewed in Apr 2021. There was 1 interview round.
Precast structures are pre-made concrete elements used in construction.
Precast segments are manufactured off-site and transported to the construction site for assembly.
They are commonly used in bridge construction, tunnels, and other large-scale infrastructure projects.
Precast segments can be designed to fit specific project requirements, reducing construction time and costs.
They offer high durability and strength, and...
Segment casting can be done using various methods depending on the material and application.
One method is sand casting, where a mold is created using sand and the molten metal is poured into it.
Another method is investment casting, where a wax pattern is created and coated with ceramic before the metal is poured.
Die casting is a method where molten metal is forced into a mold under high pressure.
Continuous casting is u...
Grade of concrete refers to its strength and durability.
Grade of concrete is denoted by a number followed by 'M' which stands for mix.
The number represents the compressive strength of concrete in megapascals (MPa).
Common grades of concrete include M10, M20, M30, etc.
Higher grade concrete has higher strength and durability.
For example, M20 grade concrete has a compressive strength of 20 MPa.
Design mix of concrete refers to the proportion of materials used in making concrete.
Design mix is determined based on the strength and durability requirements of the concrete.
The mix includes cement, water, aggregates (sand, gravel, crushed stone), and sometimes admixtures.
The proportions of each material are specified in terms of weight or volume.
For example, a common mix for general use is 1:2:3 (cement:sand:gravel)...
Segment casting is a method of casting concrete segments for tunnel lining.
Segments are cast in a factory and transported to the tunnel site.
Segments are then assembled to form a complete tunnel lining.
This method is commonly used in tunnel construction projects.
It allows for faster construction and better quality control.
Examples include the Channel Tunnel and the SMART Tunnel in Malaysia.
posted on 27 May 2024
I applied via Referral and was interviewed before May 2023. There was 1 interview round.
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Instrument Engineer
9
salaries
| ₹13 L/yr - ₹28 L/yr |
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6
salaries
| ₹8 L/yr - ₹12.3 L/yr |
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5
salaries
| ₹8.5 L/yr - ₹12 L/yr |
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4
salaries
| ₹12 L/yr - ₹16.5 L/yr |
Mechanical Engineer
3
salaries
| ₹20.5 L/yr - ₹24.5 L/yr |
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