John Crane Sealing Systems India Lead Data Scientist Interview Questions and Answers for Experienced

Questions on logical and quants

Q1. What is Bernoulli principle?
Ans. 
Bernoulli principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure or a decrease in the fluid's potential energy.
• States that as the speed of a fluid increases, its pressure decreases

• Used to explain lift in airplane wings

• Applies to various fluid dynamics situations such as flow through pipes
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Q2. What is stress and how it can be measured?
Ans. 
Stress is a force acting on a material that causes deformation. It can be measured using techniques like strain gauges and load cells.
• Stress is a measure of the internal forces within a material resisting deformation.

• It is typically measured in units of force per unit area, such as Pascals or pounds per square inch.

• Common methods of measuring stress include strain gauges, load cells, and extensometers.

• Stress can be cat...read more
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Questions from transducer digital electronics

Q1. Explain your project
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Q1. I didn't selected for HR round
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Q1. What is mean by kinetic energy
Ans. 
Kinetic energy is the energy possessed by an object due to its motion.
• Kinetic energy is directly proportional to the mass of an object and the square of its velocity.

• The formula for kinetic energy is KE = 0.5 * m * v^2, where m is the mass of the object and v is its velocity.

• Examples of kinetic energy include a moving car, a swinging pendulum, or a flying bird.
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Q1. They asked irrelevant questions only
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Q1. What is the function of Valve? what is the generic material used for valve ? Relation between temperature and pressure ?
Ans. 
Valves are mechanical devices used to control the flow of fluids or gases in a system. They are typically made of materials like stainless steel, brass, or PVC.
• Valves control the flow of fluids or gases in a system

• Common materials used for valves include stainless steel, brass, and PVC

• Temperature and pressure are related in that as temperature increases, pressure also tends to increase
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Q1. Explain about your previous experience.
Ans. 
I have 5 years of experience working as a Design Engineer in the automotive industry.
• Designed components for new vehicle models

• Collaborated with cross-functional teams to ensure design feasibility

• Utilized CAD software to create detailed drawings

• Performed testing and analysis to validate designs

• Implemented cost-effective solutions to improve product performance
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Q1. Explain the Projects that you handled in previous organisation.
Ans. 
I have handled various projects in my previous organisation including designing new products, improving existing designs, and collaborating with cross-functional teams.
• Designed new products from concept to production stage

• Improved existing designs to enhance performance and reduce costs

• Collaborated with cross-functional teams including manufacturing, marketing, and quality control

• Managed project timelines and budgets e...read more
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Q1. What is Best efficiency of pump
Ans. 
Best efficiency of a pump is the point where it operates at maximum output with minimum energy consumption.
• Best efficiency is the point on the pump curve where the highest flow rate is achieved with the lowest power consumption.

• It is important to operate the pump at or near its best efficiency point to reduce energy consumption and increase the lifespan of the pump.

• Factors that affect the best efficiency point include ...read more
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Q2. What is the slip angle in Impeller
Ans. 
Slip angle in impeller refers to the angle between the direction of fluid flow and the blade angle.
• Slip angle is an important parameter in impeller design as it affects the performance of the pump.

• It is generally kept small to minimize energy losses due to fluid slip.

• Slip angle can be calculated using computational fluid dynamics (CFD) simulations.

• For example, a slip angle of 5-10 degrees is common in centrifugal pumps
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Q1. Tell me something about your self??
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Q2. What is your daily work management???
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Q1. Why are you want to change company??
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Q1. What is a resistor?
Ans. 
A resistor is an electronic component that resists the flow of electrical current.
• Resistors are used to control the amount of current flowing in a circuit.

• They are measured in ohms (Ω) and have color-coded bands to indicate their resistance value.

• Resistors dissipate energy in the form of heat when current flows through them.

• Common types of resistors include carbon film, metal film, and wirewound resistors.
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Q2. What is a transistor?
Ans. 
A transistor is a semiconductor device used to amplify or switch electronic signals.
• Transistors are fundamental building blocks of modern electronic devices.

• They can amplify electrical signals, control the flow of current, and act as switches.

• Common types of transistors include bipolar junction transistors (BJTs) and field-effect transistors (FETs).
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