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I applied via AmbitionBox and was interviewed in Apr 2024. There was 1 interview round.
CFM can be calculated by multiplying the air velocity by the area of the duct.
Calculate the area of the duct in square feet
Measure the air velocity in feet per minute
Multiply the area by the velocity to get the CFM
CFM = Area (sq ft) x Velocity (ft/min)
I applied via Referral and was interviewed before Sep 2021. There were 2 interview rounds.
I work on various types of air conditioners including split, window, central, and portable units.
I have experience working on split air conditioners that have an indoor and outdoor unit connected by pipes.
I also work on window air conditioners that are installed in a window frame.
Central air conditioners are another type I work on that cool an entire building through a duct system.
Portable air conditioners are also in ...
I would diagnose the issue, check for any faulty parts, and repair or replace them as necessary.
Diagnose the issue by checking the thermostat, air filter, and electrical connections.
Check for any faulty parts such as the compressor, fan motor, or refrigerant leaks.
Repair or replace the faulty parts as necessary.
Test the air conditioner to ensure it is functioning properly.
Provide recommendations to the customer on how
There are several types of refrigeration gases, including R-22, R-134a, R-404A, and R-410A.
Refrigeration gases are used in air conditioning and refrigeration systems to transfer heat.
Different types of refrigeration gases have different properties and are used for different applications.
Some common types of refrigeration gases include R-22, R-134a, R-404A, and R-410A.
R-22 is a hydrochlorofluorocarbon (HCFC) that is bei...
The operating parameters of gases depend on their type and intended use.
Operating parameters include pressure, temperature, flow rate, and composition.
For example, medical gases like oxygen and nitrous oxide have specific purity requirements.
Industrial gases like nitrogen and argon may require high pressure and flow rates for certain applications.
The operating parameters must be carefully monitored and controlled to en...
I appeared for an interview in Feb 2025, where I was asked the following questions.
ArrayList uses dynamic arrays, while LinkedList uses doubly linked nodes for storage and access.
ArrayList provides fast random access (O(1)) due to its underlying array structure.
LinkedList allows for efficient insertions and deletions (O(1)) at both ends and in the middle.
ArrayList has a fixed size, requiring resizing (O(n)) when capacity is exceeded, while LinkedList grows dynamically.
Example: Use ArrayList for frequ...
Java's synchronized keyword offers thread safety but has limitations compared to ReentrantLock.
Advantages of synchronized: Simple to use and understand.
Disadvantages of synchronized: Can lead to thread contention and performance issues.
ReentrantLock allows more flexibility, such as tryLock() and timed lock attempts.
ReentrantLock can be used for fair locking, preventing thread starvation.
Synchronized blocks are tied to ...
In Java, '==' checks reference equality, while '.equals()' checks value equality. Use them appropriately to avoid bugs.
== compares object references, checking if both point to the same memory location.
Example: String a = new String('test'); String b = new String('test'); a == b returns false.
.equals() compares the actual content of the objects.
Example: a.equals(b) returns true because the content is the same.
Use '==' f...
Java 8 introduced lambdas, Stream API, and other features that enhance functional programming and simplify code.
Lambdas: Enable concise representation of functional interfaces. Example: (x, y) -> x + y.
Stream API: Facilitates functional-style operations on collections. Example: list.stream().filter(x -> x > 10).collect(Collectors.toList()).
Default Methods: Allow adding new methods to interfaces without breakin...
Checked exceptions must be declared or handled, while unchecked exceptions do not require explicit handling.
Checked exceptions are subclasses of Exception but not of RuntimeException.
Example: IOException, SQLException are checked exceptions.
Unchecked exceptions are subclasses of RuntimeException.
Example: NullPointerException, ArrayIndexOutOfBoundsException are unchecked exceptions.
Checked exceptions must be caught or d...
The Java Memory Model defines how threads interact through memory, ensuring visibility and ordering of shared variables.
The Java Memory Model (JMM) specifies how threads interact with memory, ensuring consistency and visibility.
It defines rules for visibility, atomicity, and ordering of operations in a multithreaded environment.
Synchronization mechanisms (like synchronized blocks) ensure that only one thread can access...
Method overloading allows multiple methods with the same name but different parameters; overriding redefines a method in a subclass.
Method Overloading: Same method name, different parameters (type, number, or both).
Example of Overloading: 'void add(int a, int b)' and 'void add(double a, double b)'.
Use Overloading for convenience and readability when methods perform similar functions.
Method Overriding: Redefining a meth...
posted on 28 Oct 2022
I applied via Recruitment Consulltant and was interviewed before Oct 2021. There were 3 interview rounds.
Not applicable , this was final round
I applied via Campus Placement and was interviewed in Jan 2024. There were 4 interview rounds.
I am writing automation and clicking on aptitude test.
I am writing automation and clicking on assignment test.
This is an automation test. I got this task from my senior. I'm doing good.
I applied via Campus Placement and was interviewed in Jan 2024. There were 4 interview rounds.
I am writing automation and clicking on aptitude test.
I am writing automation and clicking on assignment test.
This is an automation test. I got this task from my senior. I'm doing good.
I applied via Campus Placement and was interviewed in Jan 2024. There were 4 interview rounds.
I am writing automation and clicking on aptitude test.
I am writing automation and clicking on assignment test.
This is an automation test. I got this task from my senior. I'm doing good.
I applied via Campus Placement and was interviewed in Jan 2024. There were 4 interview rounds.
I am writing automation and clicking on aptitude test.
I am writing automation and clicking on assignment test.
This is an automation test. I got this task from my senior. I'm doing good.
I applied via Campus Placement and was interviewed in Jan 2024. There were 4 interview rounds.
I am writing automation and clicking on aptitude test.
I am writing automation and clicking on assignment test.
This is an automation test. I got this task from my senior. I'm doing good.
I applied via Campus Placement and was interviewed in Mar 2024. There were 5 interview rounds.
I am writing automation and clicking on aptitude test.
I am writing automation and clicking on assignment test.
This is an automation test. I got this task from my senior. I'm doing good.
This is an automation test. I got this task from my senior. I'm doing good.
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