Nagarjuna Construction Company Mechanical Maintenance Engineer Interview Questions and Answers

My strength programming language is C++. I have extensive experience in developing software and solving complex problems using C++.

• Proficient in object-oriented programming with C++

• Strong knowledge of data structures and algorithms

• Experience in developing efficient and scalable code

• Familiarity with C++ libraries and frameworks

• Ability to debug and optimize code for performance

• Experience in multi-threading and parallel p...read more

C is a low-level programming language while Java is a high-level object-oriented language.

• C is a procedural language while Java is an object-oriented language.

• C has manual memory management while Java has automatic garbage collection.

• C is platform-dependent while Java is platform-independent.

• C supports pointers while Java does not.

• C is typically used for system-level programming while Java is used for application devel

Data structure is a way of organizing and storing data in a computer so that it can be accessed and manipulated efficiently.

• Data structures define the way data is organized and stored in memory.

• They provide efficient algorithms for accessing, inserting, and deleting data.

• Examples of data structures include arrays, linked lists, stacks, queues, trees, and graphs.

In 5 years, I see myself as a senior electrical engineer leading a team on innovative projects and contributing to the growth of the company.

• Leading a team on innovative projects

• Contributing to the growth of the company

• Possibly pursuing further education or certifications

• Mentoring junior engineers

• Attending industry conferences and staying updated on latest technologies

I would prefer a job to gain practical experience and apply my knowledge in a real-world setting.

• Prefer job for practical experience

• Apply knowledge in real-world setting

• Gain industry exposure

• Financial independence

• Opportunity for career growth

An ideal diode is a theoretical diode that exhibits zero voltage drop when forward biased and infinite resistance when reverse biased.

• An ideal diode acts as a perfect conductor when forward biased.

• It allows current to flow in one direction with zero voltage drop.

• When reverse biased, it acts as an open circuit with infinite resistance.

• The input-output characteristic curve of an ideal diode is a vertical line at zero vol...read more

Program to compute factorial of a number using recursion

• Define a function that takes a number as input

• Check if the number is 0 or 1, return 1 if true

• Else, call the function recursively with n-1 as input and multiply with n

• Return the result

• Example: factorial(5) = 5 * factorial(4) = 5 * 4 * factorial(3) = 5 * 4 * 3 * factorial(2) = 5 * 4 * 3 * 2 * factorial(1) = 5 * 4 * 3 * 2 * 1 = 120

There are several cellular operators in India. Here are ten of them.

• Airtel

• Vodafone Idea

• Reliance Jio

• BSNL

• MTNL

• Tata Docomo

• Aircel

• Uninor

• Videocon

• Loop Mobile

The OSI model has 7 layers that define how data is transmitted over a network.

• Layer 1: Physical - deals with the physical connection of devices

• Layer 2: Data Link - responsible for error-free transfer of data between devices

• Layer 3: Network - handles routing of data between different networks

• Layer 4: Transport - ensures reliable delivery of data between applications

• Layer 5: Session - establishes and manages connections ...read more

Session layer manages and controls the connections between applications.

• Establishes, maintains and terminates sessions between applications

• Synchronizes data exchange between applications

• Manages session checkpoints and recovery

• Examples: Telnet, FTP, SMTP

A zener diode is a type of diode that allows current to flow in the reverse direction when a certain voltage is reached.

• Zener diodes are commonly used as voltage regulators.

• They have a sharp breakdown voltage, which makes them useful for stabilizing voltage in electronic circuits.

• Zener diodes are often used in power supplies, voltage references, and surge protectors.

• They are also used in noise reduction circuits and as...read more

The chairman of ISRO is K. Sivan.

• K. Sivan is an Indian space scientist and the current chairman of ISRO.

• He has been associated with ISRO for over three decades and has contributed to several missions.

• Under his leadership, ISRO has achieved several milestones including the successful launch of Chandrayaan-2.

Program to print first 10 natural numbers on the screen

• Declare a variable i and initialize it to 1

• Use a loop to print i and increment it until i reaches 10

An IP address is a unique numerical identifier assigned to every device connected to the internet.

• IP stands for Internet Protocol

• It consists of four sets of numbers separated by dots

• Each set can range from 0 to 255

• Example: 192.168.1.1 is an IP address

• IPv4 and IPv6 are the two versions of IP addresses

DRDO stands for Defense Research and Development Organization and NASA stands for National Aeronautics and Space Administration.

• DRDO is an agency of the Government of India, responsible for the development of technology for use by the military.

• NASA is a United States government agency responsible for the civilian space program, as well as aeronautics and aerospace research.

• DRDO was established in 1958 and has developed...read more

The question covers power factor of transformer, types of DC machine, working principle of AC alternator, and DC motors.

• Power factor of a transformer is the ratio of real power to apparent power.

• Types of DC machines include DC motors and DC generators.

• AC alternators work on the principle of electromagnetic induction to convert mechanical energy into electrical energy.

• DC motors convert electrical energy into mechanical ...read more