Southern Petrochemical Industries Corporation Assistant Manager - QA Interview Questions, Process, and Tips

Basic instrumentation question easy crack by study department syllabus alone

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Q1. Difference between analog and digital signals
Ans. 
Analog signals are continuous and can take any value within a range, while digital signals are discrete and can only take specific values.
• Analog signals have infinite possible values, while digital signals have a finite number of possible values.

• Analog signals are more susceptible to noise and interference, while digital signals are more resistant.

• Examples of analog signals include sound waves and temperature readings,...read more
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Q2. Explain your project
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Q3. What are weight measuring instruments
Ans. 
Weight measuring instruments are devices used to measure the weight of an object or substance.
• Common weight measuring instruments include scales, balances, and load cells.

• Scales are used for measuring the weight of objects in various settings such as kitchens, laboratories, and industries.

• Balances are used for precise measurements in scientific experiments and research.

• Load cells are used in industrial applications to ...read more
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Q4. What is stain gauge
Ans. 
A strain gauge is a device used to measure the strain or deformation of an object by detecting changes in resistance.
• Strain gauges are often used in engineering applications to monitor the structural integrity of buildings, bridges, and machinery.

• They work on the principle that the electrical resistance of a wire changes when it is stretched or compressed.

• The strain gauge is attached to the object being measured and as...read more
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Q5. How i/p convertor works
Ans. 
An i/p converter converts input signals into a different format for processing or transmission.
• An i/p converter takes an input signal and converts it into a different format, such as analog to digital or vice versa.

• It may involve sampling the input signal at regular intervals and quantizing it into discrete values.

• Examples include analog-to-digital converters (ADCs) and digital-to-analog converters (DACs).
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Q6. How flapper nozzle works
Ans. 
A flapper nozzle is a type of valve that opens and closes to control the flow of a fluid or gas.
• Flapper nozzle consists of a flap or disc that moves up and down to regulate the flow

• When the flap is lifted, fluid or gas can pass through the nozzle

• When the flap is closed, the flow is stopped

• Commonly used in fuel dispensers, fire sprinkler systems, and irrigation systems
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Q7. Why do you choose instrumentation
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