Diagnostic Engineer

Diagnostic Engineer Interview Questions and Answers

Updated 30 Nov 2024

Q1. Relay working principle and how IPM motor works with DC battery supply

Ans.

Relays are electrically operated switches that open and close circuits. IPM motors use power transistors to control the motor speed and direction with a DC battery supply.

  • Relays work by using an electromagnet to mechanically switch contacts open or closed.

  • IPM motors use power transistors to control the motor's speed and direction by adjusting the voltage and current supplied to the motor.

  • DC battery supply provides the necessary power for the IPM motor to operate efficiently.

  • I...read more

Q2. What is onboard vehicle diagnostics

Ans.

Onboard vehicle diagnostics refer to the system in a vehicle that monitors and reports on the health and performance of various components.

  • Onboard vehicle diagnostics use sensors and software to monitor the engine, transmission, brakes, and other systems for issues or malfunctions.

  • The system can alert the driver to potential problems through warning lights on the dashboard or by providing error codes that can be read using a diagnostic tool.

  • Onboard vehicle diagnostics can hel...read more

Diagnostic Engineer Interview Questions and Answers for Freshers

illustration image

Q3. Type of motor used in electric vehicles

Ans.

Electric vehicles typically use AC induction motors or permanent magnet motors.

  • AC induction motors are commonly used in electric vehicles due to their simplicity and reliability.

  • Permanent magnet motors are also popular for their high efficiency and compact size.

  • Examples of electric vehicles using AC induction motors include Tesla Model S and Nissan Leaf.

  • Examples of electric vehicles using permanent magnet motors include Chevrolet Bolt and BMW i3.

Q4. How does MOSFET works

Ans.

MOSFET is a type of transistor that uses an electric field to control the flow of current.

  • MOSFET stands for Metal-Oxide-Semiconductor Field-Effect Transistor.

  • It has three terminals: gate, source, and drain.

  • The gate terminal controls the flow of current between the source and drain.

  • MOSFET operates in three regions: cutoff, triode, and saturation.

  • It is commonly used in amplifiers, switches, and digital circuits.

Diagnostic Engineer Jobs

Software Diagnostic Engineer 4-7 years
Capgemini Technology Services India Limited
3.7
Bangalore / Bengaluru
Hydrogen Fuel Systems Controls and diagnostics Engineer 3-7 years
Hinduja Tech
3.3
Pune
Diagnostic Engineer 5-10 years
EMUG ENGINEERING SERVICES
3.6
₹ 20 L/yr - ₹ 30 L/yr
Sweden
Are these interview questions helpful?
Interview Tips & Stories
Ace your next interview with expert advice and inspiring stories

Interview experiences of popular companies

4.2
 • 995 Interviews
View all

Calculate your in-hand salary

Confused about how your in-hand salary is calculated? Enter your annual salary (CTC) and get your in-hand salary

Diagnostic Engineer Interview Questions
Share an Interview
Stay ahead in your career. Get AmbitionBox app
qr-code
Helping over 1 Crore job seekers every month in choosing their right fit company
65 L+

Reviews

4 L+

Interviews

4 Cr+

Salaries

1 Cr+

Users/Month

Contribute to help millions

Made with ❤️ in India. Trademarks belong to their respective owners. All rights reserved © 2024 Info Edge (India) Ltd.

Follow us
  • Youtube
  • Instagram
  • LinkedIn
  • Facebook
  • Twitter