ELECTRICAL ENGG MOST REPETATIVE IMPORTANT QUESTIONS

 ELECTRICAL ENGG MOST REPETATIVE 

IMPORTANT QUESTIONS

Question: Define Active and Passive elements with example.

Question: Define Unilateral and Bilateral elements with example.

Question: Explain the principle of operation of a transformer. Derive the EMF equation of single phase transformer.

Question: Why Synchronous motor is not self starting?

Question: Why single phase induction motor is not self starting . What are the different methods to make it self starting. Explain one of them.

Question: Applications of different types of DC motors.

Question: Describe different types of cables.

Question: Define : (i) MCB (ii) MCCB (iii)ELCB (iv) SFU

Question: Define Slip.

Question: Draw Phaser diagram: (i) for an ideal transformers on load.                                                    (ii) of a practical two winding transformer  in no load condition.

Question: Describe different types of transformer losses and methods to minimize it.

Question: Discuss briefly the types of batteries and explain anyone with necessary diagram.

Question: Derive: (i) EMF equation of the DC generator. 

(ii) the torque eqaution for DC machines. 

Question: What are the common problems that occur during electrical installations.

Question: What are the factors affecting speed of a DC motor? Compare lap and wave type armature winding.

To be continued...