Wipro PARI Apprentice Engineer Interview Questions and Answers

Topic on covid 19 and it's major changes in human life style

Q1. What is embedded systems
Ans. 
Embedded systems are specialized computing systems designed to perform specific tasks within a larger system.
• Embedded systems are typically designed to be low-cost and low-power.

• They are often used in consumer electronics, automotive systems, industrial machines, and medical devices.

• Examples of embedded systems include microcontrollers in washing machines, automotive engine control units, and pacemakers.

• They are progra...read more
Answered by AI
Add your answer
Q2. What is microprocessors
Ans. 
Microprocessors are integrated circuits that serve as the central processing unit in computers and other electronic devices.
• Microprocessors are responsible for executing instructions and performing calculations in electronic devices.

• They are made up of millions of tiny components packed into a single chip.

• Examples of microprocessors include Intel's Core series, AMD's Ryzen series, and ARM processors used in smartphones
Answered by AI
Add your answer

Q1. They will ask about Btech and Mtech projects and electrical engineering questions
Ans. Mtech project based on your thesis and work done whereas Btech project basics as well questions related to power systems, machine.
Answered Anonymously
Add your answer

Q1. What is difference between == and ===?
Ans. 
The difference between == and === is that == compares the values of two variables, while === compares both the values and the data types.
• The == operator performs type coercion, meaning it converts the operands to a common type before comparison.

• The === operator does not perform type coercion and requires both the values and the data types to be the same for a true comparison.

• For example, 1 == '1' returns true because t...read more
Answered by AI
View 1 more answer

Online aptitude test was easy. Questions were asked on electrical only.

Q1. Interview starts from basics of electrical. Questions were centered around generators and transformers. They test your basic electrical knowledge. No cross questioning and all direct questions
Add your answer
Q2. Types of rotors in generators
Ans. 
Types of rotors in generators include salient pole rotor and cylindrical rotor.
• Salient pole rotor has projecting poles with concentrated windings, used in low-speed applications.

• Cylindrical rotor has distributed windings and is used in high-speed applications.

• Other types include wound rotor and squirrel cage rotor.

• Wound rotor has three-phase windings connected to slip rings, used in variable speed applications.

• Squirrel...read more
Answered by AI
Add your answer
Q3. What is star delta Starter
Ans. 
Star delta starter is a type of reduced voltage starter used for starting high power motors.
• Consists of two contactors - one for star connection and one for delta connection

• Reduces starting current and torque on the motor

• Commonly used in industrial applications for motors above 5 HP
Answered by AI
Add your answer
Q4. What are the types of transformer losses
Ans. 
Types of transformer losses include copper losses, iron losses, and stray losses.
• Copper losses: Also known as I^2R losses, occur in the copper windings of the transformer due to resistance.

• Iron losses: Also known as core losses, occur in the transformer core due to hysteresis and eddy currents.

• Stray losses: Occur due to leakage flux and imperfect magnetic coupling between the windings.

• Examples: An example of copper los...read more
Answered by AI
Add your answer
Q5. Working principle of generator
Ans. 
A generator works on the principle of electromagnetic induction to convert mechanical energy into electrical energy.
• Generators use a magnetic field and a conductor to create a flow of electrons, generating electricity.

• When the conductor moves through the magnetic field, it induces a current in the conductor.

• This current is then collected and transferred through wires to power electrical devices.

• Examples of generators i...read more
Answered by AI
Add your answer