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HPCL Interview Questions
Questions Answers Views Company eMail

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?

722

When the relative speed between the magnetic fields of stator and rotor does is zero under steady state operation?

710

What is the armature mmf in a D.C machine?

771

What will be the output voltage of a transformer if it is primarily energized from a square wave voltage source?

656

The electromagnetic torque developed is proportional to what in a D.C series motor?

695

Explain different types of Normalization.

581

Write the queries for commands like Create Table, Delete table, Drop Table etc.

586

Share 2 high complexity and 2 low complexity test cases for a coke vending (ATM) machine.

605

Explain 3 high priority test cases for the performance of MSN search engine.

688

Which one has higher efficiency - Diesel Engine or Petrol Engine?

594

Explain the method to keep noises low in a control system?

625

Which motor will you choose which can operate in both lagging as well as leading power factors?

622

What is the converging and diverging passage in supersonic flow known as?

545

Which components are added to petrol in cold regions?

836

State the function of neck ring in centrifugal pump?

624

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HPCL Interview Questions


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