10+ BIS Research Interview Questions and Answers

Questions related to engineering concepts and instruments.

• Elasticity is the ability of a material to regain its original shape after being stretched or compressed.

• Hooke's law states that the force required to extend or compress a spring is directly proportional to the distance it is extended or compressed.

• 2D and 3D views can be drawn using software like AutoCAD or SolidWorks.

• Measurement instruments include rulers, calipers, micrometers, and gauges.

• NDT stands for Non-Destructi...read more

Hollow structures have a better weight to strength ratio than solid structures.

• Hollow structures are lighter than solid structures of the same material and size.

• Hollow structures distribute weight more evenly, reducing stress points.

• Hollow structures are often used in aerospace and automotive industries for their weight-saving properties.

• Solid structures may be stronger in certain applications, such as load-bearing columns or beams.

Regular inspection, cleaning, lubrication, and calibration are key to maintaining plant equipment.

• Perform regular inspections to identify any issues or potential problems

• Clean equipment regularly to prevent buildup of dirt and debris

• Lubricate moving parts to reduce friction and wear

• Calibrate equipment to ensure accurate readings and performance

• Train staff on proper maintenance procedures to prolong equipment lifespan

Explanation of ACB, VCB, MPCB, MCCB, ELCB, LT and HT side definition and load consumption.

• ACB stands for Air Circuit Breaker and is used for high current applications.

• VCB stands for Vacuum Circuit Breaker and is used for medium voltage applications.

• MPCB stands for Motor Protection Circuit Breaker and is used for protecting motors from overload and short circuit.

• MCCB stands for Molded Case Circuit Breaker and is used for low voltage applications.

• ELCB stands for Earth Leakage C...read more

Castigliano's theorem relates the partial derivative of the strain energy to the applied loads.

• Castigliano's theorem is used to determine the deflection of a structure under a given load.

• It is based on the principle of minimum potential energy.

• The theorem states that the partial derivative of the strain energy with respect to a force is equal to the displacement caused by that force.

• It can be used to solve for unknown forces or displacements in a structure.

• The equation for Ca...read more

An RC circuit involves a resistor and capacitor connected in series, with the capacitor charging and discharging over time.

• RC circuit consists of a resistor and capacitor connected in series

• The capacitor charges and discharges through the resistor, affecting the voltage across the circuit

• The charge-discharge graph of an RC circuit shows exponential growth and decay

• Equations used to analyze RC circuits include V = V0(1 - e^(-t/RC)) for charging and V = V0(e^(-t/RC)) for discha...read more

Linear regression combines independent variables to create a predictive model.

• Linear regression is a statistical technique used to model the relationship between a dependent variable and one or more independent variables.

• It combines the independent variables by estimating the coefficients that best fit the data and create a linear equation.

• The equation represents the relationship between the independent variables and the dependent variable.

• The coefficients determine the slope...read more

Control systems are used to manage and regulate the behavior of other systems or devices.

• Thermostat in a heating system

• Cruise control in a car

• Automatic door opening system

• PID controller in industrial processes

Object Oriented Programming features include encapsulation, inheritance, and polymorphism.

• Encapsulation: Bundling data and methods that operate on the data into a single unit (object).

• Inheritance: Ability to create new classes based on existing classes, inheriting their attributes and methods.

• Polymorphism: Ability for objects of different classes to respond to the same method call in different ways.

Yes, I am willing to relocate to any corner of India for the job.

• I am open to relocating for the right opportunity

• I have no geographical restrictions for my career growth

• I am adaptable and willing to embrace new environments

Designing a shaft involves determining its dimensions, material, and manufacturing process.

• Determine the required torque and power to be transmitted

• Select appropriate material based on strength, weight, and cost

• Calculate the shaft diameter and length based on the torque and bending stress

• Choose a manufacturing process such as forging, casting, or machining

• Consider factors such as surface finish, tolerances, and heat treatment

• Perform stress analysis to ensure the shaft can wit...read more

My favorite subject is Electrical Engineering because I enjoy working with circuits and solving complex problems.

• I have a strong interest in power systems and renewable energy

• I enjoy learning about electronic devices and their applications

• I find control systems and automation fascinating

I have used devices such as soldering stations, wire strippers, crimping tools, and multimeters for MRI coil production.

• Soldering stations

• Wire strippers

• Crimping tools

• Multimeters

Tanks with larger openings will fill and drain faster.

• Tanks with wider openings will fill and drain faster due to increased flow rate

• Tanks with higher water pressure will fill and drain faster

• Examples: swimming pool with a large drain vs a small sink with a narrow drain

Critical speed is the speed at which a rotating object experiences resonance and begins to vibrate uncontrollably.

• It is the speed at which the natural frequency of the object matches the frequency of its rotation.

• It can cause damage to the object and surrounding equipment.

• It is important to calculate critical speed in order to avoid resonance and vibration issues.

• Examples include turbine rotors, drive shafts, and centrifuges.

A class is a blueprint for creating objects in object-oriented programming.

• Classes define the properties and behaviors of objects.

• Objects are instances of classes.

• Classes can inherit properties and behaviors from other classes.

• Encapsulation, inheritance, and polymorphism are key concepts in class-based programming.

C is a procedural programming language while C++ is an object-oriented programming language.

• C is a procedural programming language, focusing on functions and procedures.

• C++ is an object-oriented programming language, allowing for classes, objects, and inheritance.

• C does not support classes and objects, while C++ does.

• C++ has features like polymorphism and encapsulation which are not present in C.

• C++ is an extension of C with additional features for object-oriented programming...read more