Saturday , October 23 2021

eee viva preparation

Viva questions for motors part 3

viva questions for motors

Viva questions for motors part 3   Q: While the start button is pressed the motor gets accelerated but stops as soon as the button is released?   Ans: The auxiliary contact of the starter is not working satisfactorily. As this is in parallel with the start button so as long …

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Viva questions of ac motor part 2

Viva questions of ac motor

Viva questions of ac motor part 2   Q: What are the basic differences between the single cage and double squirrel cage induction motor?  Ans: In a double squirrel cage rotor, there are two cages one of high resistance other of low resistance. In the case of a single cage …

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AC motor viva questions part 1

ac motor viva questions

AC motor viva questions part-1   Q: What is an A.C motor?  Ans: the motor which works on A.C supply is known as A.C motor. Q: What are the main classifications of A.C motors?  Ans: these are divided into: Synchronous motor Asynchronous motor.  Q: What do you know about the …

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Viva questions for transformer part 3

Viva questions for transformer part 3

Viva questions for transformer part 3   Q: What is a P.T?  Ans: It is the potential transformer and is used for measuring high voltage. It is a step-down transformer. Q: Can you tell the amperes for which the C.T. secondary is generally designed? Ans: 5 A.  Q: The secondary …

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Viva questions of transformer part 2

Viva questions of transformer

Viva questions of transformer part 2   Q: What is the angular displacement between the i⍵ and iμ currents? Ans: 90°  Q: if the I⍵ and Iμ are known, can you tell the formula for calculating the no-load current?  Ans: Q: If Bm, I, and Np are given can you …

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Transformers viva questions part 1

Transformers viva questions

Transformers viva questions part 1   Q: What is a transformer?  Ans: The transformer is a static device that is used to transfers the electrical power from one volt to another volt, without changing the frequency  Q: What do you understand by step up and step down transformers? Ans: The …

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Alternator viva questions part-1

alternator viva questions part-1

Alternator viva questions part-1   Q: What is an alternator?  Ans: The machine which converts the mechanical energy into A.C. electrical energy is known as an alternator. Q: What are the main parts of an alternator?  Ans: Stator, rotor, fan, slip ring, and side cover, etc.  Q: What are the …

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