HPCL Interview Questions

Excerpts from Interview #1:

• The electromagnetic torque developed is proportional to what in a D.C series motor?
• What is the mechanical power developed in terms of air gap power Pg in a 3 phase induction motor running at slip ‘s’?
• What shall be the secondary output voltage if the primary winding of a 220/6V, 50 Hz transformer is energized by an 110V, 60 Hz supply?
• When the relative speed between the magnetic fields of stator and rotor does is zero under steady state operation?

• Why do you want to join HPCL?
• What is the reason behind your Low/high C.G.P.A
• Questions on self-analysing yourself on your technical skills, soft skills etc.
• Tell us about your family background, financial condition, interests, hobbies etc.

Excerpts from Interview #2:

• What will you use to achieve high power amplification?
• If you have to determine the stability of a control system using the time domain method, how will you do it?
• Why do we not use inductance in lag network? Explain in detail.
• Explain the method to keep noises low in a control system?

• Questions about Family Background
• What is the reason for joining Maruti and not a technical firm
• Do you have any acceptance issues with the bond
• Why your CGPA is so low?

Excerpts from Interview #3:

• If you have to enlarge the area covered by a single LAN segment which layer 1 device will you use?
• At which layer of OSI model does segmentation of a data stream happen?
• What can a host do to improve the reliability of this communication session when a receiving host has failed to receive the entire segment that it should acknowledge?
• Which OSI layer consists of characteristics like acknowledgement, flow control and sequencing?

• What motivates you at work?
• Will you be happy to work in night shifts or over the weekends?
• Have you ever committed a mistake at work?
• What position would you prefer while working on a project?

Excerpts from Interview #4:

• What will be the output voltage of a transformer if it is primarily energized from a square wave voltage source?
• What is the armature mmf in a D.C machine?
• What will be the voltage regulation of a full load and 0.80 power factor lagging load transformer when a two winding single phase transformer has a voltage regulation of 4.5% at full load and unity power factor?
• Which motor will you choose which can operate in both lagging as well as leading power factors?

• Questions regarding family background and personal life.
• Why do you have such a low CGPA? Do you understood its implications? What could you have done differently?
• What are your future goals? Do you wish to change your career path in the future?
• How long do you plan to work for this company? What reasons would make you leave a job?

Excerpts from Interview #5:

• What step should be taken in process industries if the process variable is oscillating?
• What is cathodic protection, how it works in Turbine condensers?
• What is possible maximum efficiency of a diesel engine and a petrol engine?
• What is gas metering system? Gas chromatograph? And gas compressors?

• Tell us about your Family Background.
• Will you be ready to shift to the different site locations our company operates at?
• Do you want to change your career path in the future?
• Why do you want to work in HPCL and not any other corporation?
• What do you know about HPCL?

Excerpts from Interview #6:

• What is the converging and diverging passage in supersonic flow known as?
• State the function of neck ring in centrifugal pump?
• What is the second law of thermodynamics?
• Which one has higher efficiency – Diesel Engine or Petrol Engine?
• Which components are added to petrol in cold regions?

• What does the tilak on your forehead signifies?
• Are you alright with reporting to your junior at work?
• When did you decide to go for this career?
• What is your biggest strength and weakness?
• What does success mean to you?