Al-Ameen Nursery and Primary Nursery and Primary School Electrical Technician Interview Questions and Answers

Q1. What is the back pressure for refrigerant R-134a?
Ans. 
The back pressure for refrigerant R-134a is typically around 60 psi.
• The back pressure for R-134a is usually maintained around 60 psi to ensure proper functioning of the HVAC system.

• Back pressure is the pressure in the low side of the system, which helps in the cooling process.

• Maintaining the correct back pressure is crucial for the efficiency and performance of the HVAC system.
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Q2. What are the different types of compressors?
Ans. 
Different types of compressors include reciprocating, rotary, scroll, and centrifugal compressors.
• Reciprocating compressors use pistons to compress air.

• Rotary compressors use rotating mechanisms to compress air.

• Scroll compressors use spiral elements to compress air.

• Centrifugal compressors use high-speed rotating impellers to compress air.
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Q1. About Single line diagram
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Q2. Transformers installation
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Q3. Dg working principle
Ans. 
A DG (diesel generator) works on the principle of converting mechanical energy from the diesel engine into electrical energy through an alternator.
• Diesel engine burns fuel to produce mechanical energy

• Mechanical energy is used to rotate the alternator

• Alternator converts mechanical energy into electrical energy
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Q4. Difference between Predective and Preventive Maintenance
Ans. 
Predictive maintenance uses data and analytics to predict when equipment failure may occur, while preventive maintenance involves regularly scheduled maintenance to prevent breakdowns.
• Predictive maintenance uses data and analytics to predict when equipment failure may occur

• Preventive maintenance involves regularly scheduled maintenance to prevent breakdowns

• Predictive maintenance is more cost-effective as it allows for ...read more
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Q5. Question about Vcb ,Acb and it's working
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Q6. MCC panel installation
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Q7. HT panel installation
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Q1. Previous organisation work
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Q2. Why Apmd and it's reason
Ans. 
APMD stands for Average Power Maximum Demand, it is used to calculate the average power consumption over a specific period of time.
• APMD helps in determining the maximum power demand during a specific time period.

• It is useful for utility companies to plan and manage their power generation and distribution.

• APMD is calculated by taking the average power consumption over a defined time period, usually in kilowatt-hours (kW
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Good it was and easy

War b/w country deadlines can destroy the creativity or not

Aptitude include Percentage Ratio

Arrays,String an Java

Q1. Introduction of our
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Q2. Family Background and details
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Q1. Spreadsheet automation
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Q2. Google sheet work
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Medium leetcode question on graph was given by third party interviewer BarRaiser

General Aptitude, and Basic java questions

They asked about the advantages and disadvantages of corona

Same for all the roles completely based on aptitude question

They gather a group of members who are qualified for the round 2, Everyone should talk they mainly focus on how much of analysis skills you have

Q1. Why you are fit for the role
Ans. 
I have a strong background in software development with experience in various programming languages and technologies.
• Extensive experience in developing software applications using languages such as Java, Python, and C++

• Proficient in working with databases such as MySQL and MongoDB

• Familiarity with web development technologies like HTML, CSS, and JavaScript

• Strong problem-solving skills and ability to work well in a team ...read more
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Q2. Tell me about your self
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It was a easy aptitude test .most of the questions was repeating

Q1. Introduce yourself ?
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Q2. What do you know about this company?
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