Technology Engineer Interview Questions and Answers

This is a technical interview question about PCB, amplitude, and power supply.

• PCB stands for Printed Circuit Board and is used to mechanically support and electrically connect electronic components.

• Amplitude is the measure of the maximum deviation of a signal from its average value.

• Types of power supply include AC (alternating current) and DC (direct current) power supplies.

• Other types of power supplies include linear power supplies, switching power supplies, and regulated po...read more

Mass balance for a distillation tower and measuring catalyst degradation in a technology engineering interview

• For mass balance in a distillation tower, calculate the total mass entering and leaving the tower to ensure conservation of mass

• Measure catalyst degradation by analyzing changes in catalyst activity, selectivity, and physical properties over time

• Use techniques like X-ray diffraction, surface area analysis, and chemical analysis to monitor catalyst degradation

• Regularly...read more

Pump & turbine performance can be measured using various parameters such as flow rate, head, efficiency, and power consumption.

• Measure flow rate using flow meters

• Measure head using pressure gauges

• Calculate efficiency by comparing input power to output power

• Monitor power consumption using energy meters

• Perform performance tests under different operating conditions

Object-oriented programming concepts that focus on objects and classes for better code organization and reusability.

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

• Inheritance: Ability of a class to inherit properties and behavior from another class.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the complex implementation details and showing only the necessary features of an object....read more

Inheritance is a concept in object-oriented programming where a class can inherit attributes and methods from another class.

• Allows for code reusability and promotes the concept of hierarchy

• Derived class can access the properties and methods of the base class

• Types of inheritance include single, multiple, multilevel, hierarchical, and hybrid

• Example: Class 'Car' can inherit from class 'Vehicle' to access common vehicle properties

Unit operation involves physical changes while unit process involves chemical changes in a system.

• Unit operation involves physical changes like separation, filtration, etc.

• Unit process involves chemical changes like reactions, synthesis, etc.

• Unit operation is a single step in a process while unit process involves multiple steps.

• Examples of unit operations include distillation, crystallization, etc.

• Examples of unit processes include oxidation, hydrolysis, etc.

Lambdas in Java are anonymous functions that allow you to pass behavior as an argument to a method.

• Lambdas are used to implement functional interfaces with a single abstract method.

• They provide a concise way to write code by reducing boilerplate.

• Syntax: (parameters) -> expression or statement block

• Example: (int a, int b) -> a + b

Immutable strings are unchangeable sequences of characters, ensuring data integrity and thread safety in programming.

• In Java, use the String class: String str = "Hello"; // str cannot be modified.

• In Python, strings are immutable by default: str = 'Hello'; // str cannot be changed.

• In C#, use the 'readonly' modifier: public readonly string str = "Hello";

• Immutable strings help prevent accidental changes and improve performance in multi-threaded environments.