Aarav Unmanned Systems Software Engineer Interview Questions and Answers

Hackerrank test basic kotlin and android

Q1. What is gcd? And explain it
Ans. 
gcd stands for greatest common divisor, the largest positive integer that divides two or more numbers without leaving a remainder.
• gcd is used to find the largest integer that can evenly divide two or more numbers.

• It is commonly used in mathematics and computer science algorithms.

• For example, the gcd of 12 and 18 is 6, as 6 is the largest number that can divide both 12 and 18 without leaving a remainder.
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Q2. What is arc and explain it
Ans. 
ARC stands for Automatic Reference Counting, a memory management technique used in programming languages like Objective-C and Swift.
• ARC automatically tracks and manages the memory used by objects in a program

• It increases the retain count of an object when it is referenced and decreases it when it is no longer needed

• ARC helps prevent memory leaks and retain cycles in iOS and macOS development
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Q1. About HVAC project, design , install ations
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Q2. Central ac plant, ducts, piping
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Q3. Clean room, equipment, handover process
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Q1. IOS Questions, Multithreading etc
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Q1. Swift and SwifUI questions
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Q1. Mixed node db express
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Q1. Node js core concept
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Q1. Node js core concepts
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Q1. Behaviour and technical
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Q1. Question about basics of mechanical engineering such as stress vs strain curve
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Q1. What is the difference between pipe and tube?
Ans. 
Pipes are measured by their inner diameter, while tubes are measured by their outer diameter.
• Pipes are used for the transportation of fluids and gases, while tubes are used for structural applications.

• Pipes are typically round in shape, while tubes can be round, square, or rectangular.

• Pipes are manufactured to specific industry standards, while tubes can have more variation in size and shape.

• Examples: PVC pipe for plum
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