Tech Mahindra QA Engineer Interview Questions, Process, and Tips for Experienced

AC stands for alternating current, a type of electrical current where the flow of electric charge periodically reverses direction.

• AC is commonly used in homes and businesses for powering electrical devices.

• AC is generated by power plants and distributed through power lines.

• AC can be converted to DC (direct current) using devices like rectifiers.

• Examples of AC-powered devices include refrigerators, air conditioners, and

QC focuses on testing the product to identify defects, while QE focuses on preventing defects through process improvements.

• QC (Quality Control) involves testing the product to identify defects and ensure it meets quality standards.

• QE (Quality Engineering) focuses on preventing defects by improving processes and implementing quality standards.

• QC is reactive, while QE is proactive.

• QC involves finding and fixing defects, ...read more

Program to check if a number is prime or not.

• Create a function to check if a number is prime by iterating from 2 to the square root of the number.

• If the number is divisible by any number in that range, it is not prime.

• Return true if the number is prime, false otherwise.

Polymorphism is the ability of a single function or method to operate on different types of data. Overriding is when a subclass provides a specific implementation of a method that is already provided by its superclass.

• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• Overriding occurs when a subclass provides a specific implementation of a method that is already provided b...read more