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lifeiscalling

Wednesday, January 25, 2006

Comic series: rathi and college viva

Comic series: rathi and college viva

******************************************************
Interviewer:** Why is a thicker conductor necessary to
carry a current
in **
A.C.as* * compared to D.C. ? **
> rathi <:** An AC current goes up and down (drawing a
sinusoid) and
requires more space inside the wire, so the wire has
to be thicker. **
*******************************************************
External** (to **> rathi <**) : "Why does a capacitor
block DC but allow
AC To
pass through ? **
> rathi <:** 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 :) **
*********************************************

Interviewer:** How will you tell if that wall outlet
carries AC or DC?
**
> rathi <:** I will put my finger in. If it is pushed
away, it is AC.
If it
gets stuck, it was DC. **
***********************************************
**
Interviewer:** H! ow will you reverse direction of an
Induction motor?
**
> rathi <:** I will remove the four bolts at the x-ud,
turn the motor
around, and put back the bolts. **

************************************************
**
Interviewer:** How do you start a synchronous motor?
**
> rathi <:** **Vrrrrrrrmmmmmmmmmmmmmmmmmmm** (in
rising pitch) **
Interviewer: **Stop! Stop! **
> rathi <:** **rrrrrrrmmmmmmmmmmmmmmmmmmmm **(in
falling pitch) **
***********************************************
**
Examiner:** "What is a step-up transformer?" **
> rathi <:** "A transformer that is put on top of
electric poles." **
Examiner (smiling):** "And then what is a step-down
transformer?" **
> rathi < (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?"
(**> rathi < knows he is caught-can't answer**) **
Examiner (impatiently):** "Well?" **
> rathi < (triumphantly):** "A stepless transformer,
sir!" **
****************************************************

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