Ziqitza Health Care Mechanical Maintenance Engineer Interview Questions and Answers

HEPA filter validation involves testing and verifying the efficiency of the filter.

• HEPA filter validation is done to ensure that the filter is working efficiently and effectively.

• Validation involves testing the filter's ability to remove particles of a certain size from the air.

• Tests may include aerosol challenge testing, leak testing, and airflow testing.

• Validation should be done regularly to ensure that the filter co...read more

ACPH is calculated by dividing the total number of hours worked by the number of hours available for work.

• ACPH stands for Actual Craftsmen Productive Hours.

• It is used to measure the productivity of maintenance personnel.

• The formula for ACPH is: Total hours worked / Available hours for work.

• Available hours for work can be calculated by subtracting downtime, breaks, and other non-productive time from the total available ...read more

Stack using queues: push() - enqueue to queue1, pop() - dequeue from queue2 after transferring n-1 elements from queue1 to queue2

• To push an element, enqueue it to queue1

• To pop an element, transfer n-1 elements from queue1 to queue2, dequeue the last element from queue1 and swap the names of queue1 and queue2

• Queue using stacks: enqueue() - push to stack1, dequeue() - pop from stack2 after transferring all elements from ...read more

Doubly linked list is a data structure where each node has a pointer to both previous and next nodes.

• Create a Node class with data, prev and next pointers

• Create a LinkedList class with head and tail pointers

• Implement methods to add, remove and traverse nodes

Yes, I am a leader.

• I have experience leading teams in previous projects.

• I am able to communicate effectively and motivate team members.

• I am proactive in identifying and solving problems.

• I am able to delegate tasks and trust team members to complete them.

• I am constantly seeking to improve my leadership skills through learning and feedback.

I am a recent computer science graduate with experience in software development and a passion for learning new technologies.

• Graduated with a degree in computer science

• Experience in software development

• Passionate about learning new technologies

The company is a software development firm.

• The company specializes in software development.

• It has a team of experienced software engineers.

• The company has worked on various projects for clients in different industries.

• It is known for delivering high-quality software solutions.

• The company values innovation and creativity in its work.

Formula to calculate number of squares that can fit inside a triangle

• Calculate the area of the triangle and the area of the square

• Divide the area of the triangle by the area of the square to get the number of squares that can fit inside the triangle

• Formula: (h*b)/(a*a)

SVM is a machine learning algorithm used for classification and regression analysis.

• SVM finds the best hyperplane that separates data into different classes.

• It works by maximizing the margin between the hyperplane and the closest data points.

• SVM can handle both linear and non-linear data using kernel functions.

• It is widely used in image classification, text classification, and bioinformatics.

• SVM has been shown to be ef...read more

Logistic regression is used for classification while linear regression is used for regression analysis.

• Logistic regression predicts the probability of an event occurring, while linear regression predicts the value of a continuous variable.

• Logistic regression uses a sigmoid function to map input values to a probability between 0 and 1.

• Linear regression assumes a linear relationship between the independent and dependent ...read more

Eligible customers for Vodafone's 4G service launch in India.

• Customers with 4G compatible devices

• Customers with high data usage

• Customers in areas with good network coverage

• Customers who have shown interest in technology and gadgets

• Customers who have previously used Vodafone's high-speed data services

• Customers who have opted-in to receive promotional messages

I am a detail-oriented Business Analyst with strong analytical skills. My strengths include problem-solving and communication, while my weakness is sometimes being too detail-oriented.

• Strengths: strong analytical skills

• Strengths: problem-solving abilities

• Strengths: effective communication skills

• Weakness: being too detail-oriented

• Weakness: sometimes struggle with delegation

Yes, I am willing to work extra hours and weekends when necessary.

• I am committed to meeting project deadlines and delivering high-quality work.

• I understand that sometimes extra hours may be required to complete tasks or address urgent issues.

• I have previous experience working weekends and extra hours when needed, such as during busy project phases or critical system upgrades.

Yes, I am okay with working in Noida.

• I am open to working in Noida and have no issues with the location.

• I have worked in Noida before and am familiar with the area.

• I am willing to relocate to Noida if required for the job.

Find the heavier ball out of 8 using a weighing balance in minimum and maximum attempts.

• Divide the balls into 3 groups of 3, 3, and 2.

• Weigh the first two groups against each other.

• If they balance, the heavier ball is in the third group.

• If one group is heavier, weigh two balls from that group against each other.

• If they balance, the heavier ball is the remaining one.

• If one ball is heavier, that is the answer.

• In the worst...read more

In 3 attempts, the heavier ball can be found using the weighing balance.

• Divide the balls into 3 groups of 3, 3, and 5 balls.

• Weigh the first two groups against each other.

• If they balance, the heavier ball is in the third group. Weigh two balls from the third group against each other to find the heavier one.

• If they don't balance, the heavier ball is in the heavier group. Take two balls from the heavier group and weigh th

Use a binary search approach to find the heavier ball among 'n' balls using a weighing balance.

• Divide the 'n' balls into two equal groups and weigh them on the balance.

• If one group is heavier, repeat the process with that group.

• If both groups weigh the same, the heavier ball is among the remaining unweighed balls.

• Continue dividing and weighing until the heavier ball is found.

The number of soft drinks sold in J&K on a particular day depends on various factors such as population, demand, availability, and marketing strategies.

• The population of J&K can be a factor in determining the potential number of soft drink sales.

• The demand for soft drinks can vary based on factors such as weather, events, and cultural preferences.

• The availability of soft drinks in J&K, including distribution channels a...read more

Estimating the market size of 4K and 8K display screens.

• Analyze sales data and market research reports

• Consider the adoption rate of 4K and 8K technology

• Evaluate the market demand from various industries (entertainment, gaming, advertising, etc.)

• Assess the pricing and availability of 4K and 8K displays

• Factor in the growth potential and competition in the market

Area of square except inscribed circle

• Find area of square

• Subtract area of circle from square

• Area of square = L^2, Area of circle = pi*(L/2)^2

• Answer = L^2 - pi*(L/2)^2

A program to find factorial using recursion.

• Define a function that takes an integer as input.

• Check if the input is 0 or 1, return 1 in that case.

• Otherwise, call the function recursively with input-1 and multiply it with the input.

Indexes are data structures that improve the speed of data retrieval operations in a database. Views are virtual tables created from queries.

• Indexes are used to quickly locate data in a database by creating a sorted structure that allows for efficient searching.

• Views are virtual tables that are created by executing a query and storing the result set as a named object.

• Indexes can be created on one or more columns of a t...read more

Indexes are implemented using B Trees and B+ Trees.

• B Trees and B+ Trees are data structures used to organize and efficiently search data in databases.

• B Trees are balanced search trees that store data in nodes with multiple children.

• B+ Trees are similar to B Trees but have additional features like leaf nodes that form a linked list.

• Indexes are created on specific columns of a database table to improve query performance.

• ...read more

Other than indexes and tables, a DBMS also includes views, stored procedures, triggers, and functions.

• Views: Virtual tables that are based on the result of a query. They provide a way to simplify complex queries and restrict access to data.

• Stored Procedures: Precompiled sets of SQL statements that can be executed with a single command. They enhance performance and allow for code reusability.

• Triggers: Special types of s...read more

A database administrator manages and maintains databases, ensuring their security, performance, and availability.

• Designing and implementing database structures

• Installing and configuring database software

• Monitoring and optimizing database performance

• Ensuring data integrity and security

• Backing up and restoring databases

• Troubleshooting and resolving database issues

• Collaborating with developers and system administrators

• Pla...read more

Types of integrity in DBMS include foreign, referential, and domain.

• Foreign integrity ensures that foreign key values in a table match primary key values in another table.

• Referential integrity ensures that relationships between tables are maintained, preventing orphaned or invalid data.

• Domain integrity ensures that data in a column adheres to specified data types, formats, or constraints.

• For example, in a database for ...read more

SDLC is a process followed by software development teams to design, develop and test high-quality software.

• SDLC stands for Software Development Life Cycle

• It consists of several phases including planning, analysis, design, implementation, testing, and maintenance

• Each phase has its own set of activities and deliverables

• The goal of SDLC is to produce high-quality software that meets customer requirements and is delivered ...read more

Agile methodology is an iterative and incremental approach to software development.

• Agile methodology emphasizes collaboration, flexibility, and customer satisfaction.

• It involves breaking down the project into small, manageable tasks called user stories.

• Teams work in short iterations called sprints, typically 1-4 weeks long.

• Regular meetings like daily stand-ups and sprint reviews are held to track progress and gather fe...read more

In 3-5 years, I see myself as a senior software engineer leading a team of developers on innovative projects.

• Advancing to a senior software engineer role

• Leading a team of developers on projects

• Working on innovative and challenging projects

• Continuing to learn and grow in the field

I am a passionate software engineer with experience in developing web applications using various technologies.

• Experienced in full-stack web development

• Proficient in languages such as JavaScript, Python, and Java

• Familiar with frameworks like React, Node.js, and Django

• Strong problem-solving skills and ability to work in a team

• Completed projects like e-commerce website using MERN stack

I want to learn how to play the piano.

• I have always been fascinated by music and the piano in particular.

• Learning to play an instrument can be a great way to relax and unwind.

• Playing the piano can also improve cognitive skills and memory.

• I believe learning to play the piano will bring me joy and fulfillment.

My strengths include problem-solving skills and attention to detail. My weaknesses include public speaking and time management.

• Strengths: problem-solving skills, attention to detail

• Weaknesses: public speaking, time management