Grasim Industries Senior Instrument Engineer Interview Questions and Answers

Q1. Instrument question
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Q2. Pt,rtd, vibration, other
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Q1. Field instrumentation
Ans. RTD,Thermocouple, presser transmitters, presser switches,Limit Switches, Proxymity switch,boot level Switch,Beltsway Switch ,tilt switch, extra.
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Q2. Field instruments
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Q3. RTD,Thermocouple, presser transmitters, presser switches,Limit Switches, Proxymity switch,boot level Switch,Beltsway Switch ,tilt switch, extra.
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Q4. Solenoid valves, pneumatic gate, actuator s, Transducers,positionsensors,LVDT sensor,level sensor,bellef sensor,load cells,photo cell sensor,tacho meter,Rader levelsensor, Air blasters ,extra.
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Q5. Weigh feeders, doses mat feeder, solid flow meters, matel detectors,gas analysers ,extra.
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Q1. Tell me something about your self
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Q2. Working principle of mass flow meter
Ans. 
Mass flow meter measures the mass flow rate of a fluid in a pipe or duct.
• Works on the principle of Coriolis effect or thermal dispersion

• Fluid flows through a vibrating tube or a heated element

• Measures the change in frequency or temperature to determine mass flow rate

• Used in industries like chemical, food and beverage, and oil and gas

• Examples include Coriolis mass flow meter and thermal mass flow meter
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Q3. Troubleshooting of load cell
Ans. 
Load cell troubleshooting involves checking wiring, calibration, and environmental factors.
• Check wiring connections for any loose or damaged wires

• Verify calibration using a known weight or standard calibration weight

• Ensure the load cell is not exposed to extreme temperatures or vibrations

• Inspect the load cell for any physical damage or wear

• Check the amplifier or signal conditioner for any issues

• Consider environmental f...read more
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Q4. Types and make Of PLCs
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PLCs are programmable logic controllers used in automation. Types include modular, compact, and rack-mounted PLCs.
• Modular PLCs are flexible and can be customized to fit specific needs.

• Compact PLCs are smaller and more cost-effective, but have limited I/O options.

• Rack-mounted PLCs are designed for larger systems and have high I/O capacity.

• Some popular PLC brands include Siemens, Allen-Bradley, and Mitsubishi.

• PLCs can al...read more
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Maths , English

Q1. All about instrumentation
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Q1. Negotiation and previous company
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Q1. Types of sensor used in plant
Ans. 
Various types of sensors are used in plants for monitoring and control purposes.
• Temperature sensors (thermocouples, RTDs, thermistors)

• Pressure sensors (piezoelectric, capacitive, strain gauge)

• Level sensors (ultrasonic, radar, capacitance)

• Flow sensors (magnetic, vortex, ultrasonic)

• Gas sensors (infrared, electrochemical, catalytic)

• Humidity sensors (capacitive, resistive, thermal)

• pH sensors (glass, ISFET, differential)

• Con...read more
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Q1. Technical reletive question
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Maths, Resigning and English

Q1. All Technical Questions About your company Experience and Job related
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Q1. It's totally about instrumental questions
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Q2. Aked to me about all instrumental questions
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