Electrical Engineering Interview Questions

  • What are V and inverted V curves Answer
  • What is Cross field revolving theory
  • What are the advantages of Non salient
  • What are the different methods of starting of machines
  • What is Over excitation
  • How does load gets affect with speed in Synchronous machines
  • What is Synchronous condenser
  • Why poly phase induction motors are self starting
  • What is meant by Crawling in Induction motors
  • What is the purpose of Auto-Transformer
  • What is Dark lamp method
  • What is meant by Skew in Induction motors
  • What is meant by Cogging in Induction motors
  • What are universal motors
  • What is double field revolving Theory
  • Why single phase Induction motors are not self starting
  • What is a pony motor
  • What is under excitation
  • What is normal excitation
  • Explain the operation of alternators on infinite bus
  • What is the effect of change in input power
  • What is the effect of change in excitation
  • Can you explain the Parallel operation of Alternators
  • What is synchronizing Current
  • What is Synchronizing Torque
  • What is Synchroscope method
  • What is Bright lamp method
  • What are different methods of Synchronising alternators
  • What does Synchronisation of Alternators mean
  • How can we determine Xd and Xq
  • What is slip test
  • What is two reaction theory
  • What are the different methods of finding voltage regulation
  • What is synchronous Impedance method
  • What is A.S.A method
  • What is potier method
  • What is m.m.f method
  • What is voltage regulation of an Alternator
  • How does cooling of Synchronous machines takes place
  • What is brushless excitation system
  • What is static excitation System
  • What are the methods of excitation of a Synchronous machines
  • What is Tooth Ripple
  • How can we reduce the effect of harmonics
  • What are Harmonics
  • What is breath factor
  • What is pitch factor
  • What are the conditions to be satisfied for parallel operation of transformers
  • What is efficiency and condition for maximum efficiency in a transformer
  • Why do we perform load test or Sumpner’s test on Transformers
  • Why do we perform Polarity tests on Transformers
  • What is voltage regulation of a Transformer
  • How can we express volts, amperes, and ohms etc in Per Unit Values
  • How does wattmeter connected on H.V side records the Ohmic losses on L.V side also
  • What are Open and Short circuit tests of a Transformer
  • What is the Emf equation in a Transformer
  • What is B-H curve
  • What are Transformer losses
  • What are Transformers
  • How does the transfer of impedance takes place in transformers
  • What are the properties of a ideal two winding transformer
  • What is the principle involved in working of a transformer
  • What do you mean by heating and cooling of transformers
  • For low power levels and high power levels which type of transformers are preferred
  • What is the need to reduce leakage flux and how can we do this in both core and shell type Transformers
  • What is leakage flux
  • What are the two general type of Transformers based onin which manner windings Are Wound
  • Why does Transformers are know as to have high efficiency
  • How does electrical energy transfer takes place in Transformers
  • Where Transformers are applicable
  • Name different types of Transformer based on Number of windings
  • How are Primary and secondary windings of a Transformer connected
  • What is commutator action
  • What is a commutator
  • What are rotary parts of D.C motor
  • What are Stationary parts of a D.C motor
  • What is Armature Reaction
  • Explain Separate excitation
  • Explain Self excitation
  • What are different methods of Machines
  • What are speed torque characteristics
  • What are Mechanical losses
  • What are different cooling methods
  • What is pull in torque
  • What is pull-out-torque
  • What is starting torque
  • mention the applications of Induction motors and generators
  • Mention the applications of Synchronous generators and motors
  • What are Synchronous compensators
  • What are heating and cooling curves of Induction machines
  • What is Synchronous speed
  • What is the difference between single phase and Poly phase Induction machines
  • What is the difference between single phase and Polyphase Synchronous Machines
  • What are Non Salient pole Synchronous Machines
  • What are Salient pole Synchronous Machines
  • What are Squirrel cage Induction machines
  • What are Slip ring Induction machines
  • How are Inductions Machines classified
  • How are Synchronous machines classified
  • How does the E.M.F generation takes place in Dc machine
  • Explain the Stator and Rotor windings of Induction Machines
  • Explain the Armature and Field windings of Synchronous machine
  • What is Synchronization
  • What are Synchronous and Induction machines
  • What are full pitched and short pitched coils
  • What are Electrical and Mechanical degrees
  • What is Pole-Pitch
  • What are the differences between Dc and Ac machines
  • What is Reluctance or Alignment toque
  • What is Electromagnetic or Interaction torque
  • What is the generator and the principle involved in generator
  • What is a motor and the principle involved in the motor
  • What is Coupling Field reaction
  • What is Electromagnetic energy conversion Principles
  • What factors causes Noise in a Transformer and How can we reduce it
  • What are Three Phase Transformers give their four Standard connections
  • What is need of Induction regulators in Transformers
  • What are Tap changers on Transformers and what is their need
  • What are Hysteresis and Eddy current losses
  • What are Stray load and Dielectric losses
  • Why does sparking occurs in a commutator
  • What happens if the field coil is opened
  • What happens if the Armature coil is opened
  • What are the Advantages of stationary armature
  • What are the two types of Armature windings
  • What are Permanent magnet Dc Motors
  • What is Power Factor
  • What are Rotating Amplifiers
  • What is Brake test
  • What is Regenerative or Hopkinson’s method of testing
  • What is Swinburne’s or indirect method of testing
  • What is Direct method of testing
  • How does testing of D.C machines takes place
  • How does speed control can be obtained in motors by using SCR’S
  • What is Armature voltage control method
  • What is Ward Leonard method
  • What are series motors
  • What are shunt motors
  • What do you mean by Speed Regulation
  • How does the speed control of motors takes place
  • What factors influence the speed of a D.C motor
  • What is external resistance
  • What are stators
  • What are the necessary conditions to be obtained for staring of a Motor
  • What is D.C compound Motor
  • What are operating characteristics of D.C Motors
  • What are series Generators
  • What are Shunt Generators
  • What are Cumulative compound generators
  • What is Magnetization curve
  • What is Motor mode
  • What is Generating mode
  • What are different operating characteristics of D.C generators
  • What are the effects of Brush shifts
  • What are the different methods employed in limiting Armature reaction
  • What are the effects of Armature reaction
  • What is De-Magnetization
  • What is flux per pole
  • What is Cross Magnetization
  • What are Ratings of a Motor
  • What is Shaft
  • What is armature windings
  • What is Armature core
  • What is Compensating Windings
  • What is Field windings
  • What is field poles
  • What is Yoke
  • What are Interpoles
  • What are Brushes
  • What is rocker
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2 comments:

  1. thank u sir for giving interview questions.keep giving instrumenation questions also.
    Regrads,
    N Rajesh

    ReplyDelete