These were some of the silly answers gave by my friends at the time of practical exams viva... I remembered some of them which are so funny and i laugh myself whenever they come to my mind... Just wanna share with you too...
Examiner: Why is a thicker conductor necessary to carry a current
in A.C. as compared to D.C. ?
Student: An AC current goes up and down (drawing a sinusoid) and
requires more space inside the wire, so the wire has to be thicker.
Examiner: How will you reverse direction of an induction motor?
Student: I will remove the four bolts at the base, turn the motor
around,and put back the bolts.
Examiner: How do you start a synchronous motor?
Student: Vrrrrrrrmmmmmmmmmmmmmmmmmmm (in rising pitch)
Examiner: Stop! Stop!
Student: rrrrrrrmmmmmmmmmmmmmmmmmmmm (in falling pitch)
Examiner: How will you tell if that wall outlet carries AC or DC ?
Student: I will put my finger in. If it is pushed away, it is AC. If
it gets stuck, it was DC.
Examiner: How do you limit surge current within an integratedcircuit?
Student: By using a circuit breaker.
Examiner : "What is a step-up transformer?"
Student : "A transformer that is put on top of electric poles."
