Answers by B.E students during viva..............!!

 Best answer by B.E.ELECTRICAL students during viva..............


Interviewer: Why is a thicker conductor necessary to carry a current
in A.C.as compared to D.C. ?
Candidate : An AC current goes up and down (drawing a sinusoid) and
requires more space inside the wire, so the wire has to be thicker.

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External (to student) : "Why does a capacitor block DC but allow AC To
pass through ?
Student: See, a capacitor is like this ---| |--- , OK. DC comes
straight, like this ----------, and the capacitor stops it. But
AC,goes UP, DOWN, UP DOWN and jumps right over the capacitor!"
------------------- good one : - )

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Interviewer: How will you tell if that wall outlet carries AC or DC?
Candidate: I will put my finger in. If it is pushed away, it is AC. If
it gets stuck, it was DC.

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Interviewer: H! ow will you reverse direction of an Induction motor?
Candidate: I will remove the four bolts at the x-ud, turn the motor
around, and put back the bolts.

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Examiner: "What is a step-up transformer?"
Student: "A transformer that is put on top of electric poles."



Examiner (smiling): "And then what is a step-down transformer?"
Student (hesitantly):"Uh - A transformer that is put in the x-udment
or in a pit?"



Examiner (pouncing): "Then what do you call a transformer that is
installed on the ground?"
(Student knows he is caught-can't answer )



Examiner (impatiently): "Well?"
Student (triumphantly): "A stepless transformer, sir!"

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Engineers at work:

Assignments solved by one and then carry out mass transfer operations
throughout the class

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The most important machine for Engineers:

Xerox Machine (Without which assignment Completion couldn't be possible)

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Top two Engineering Rumours:

Did you hear the results are being put up today at 5:30pm
Did you hear the exams are postponed by two weeks

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Common Engineering Dialogues after a paper:

'What is this man, 60% o f the paper was out of the syllabus'
'This was the worst paper set in the entire
engineering history' 'I am failing'