Placement Papers - CTS

PAPER : CTS PLACEMENT PAPER PATTERN (ERNAKULAM )

We had an aptitude test which include 
Verbal reasoning, 
Analytical and 
Logical reasoning.. 
70 questions in one hour.. 
think very low cut off..test was not easy 4 me..but got selected.. 
 
Interview: 
I was the first girl der.. 
 
hr: good morning 
me:good morning 
he asked me to sit and then introduce urself 
me:blah blah 
started asking tech 
 
1.what is rectifier? 
2.draw the circuit of bridge rectifier 
3.what is diode? 
4.draw v-i chara of diode 
5.what is transistor? 
6.diff between npn and pnp? 
7.what is pinch off in jfet? 
8.what is a flip-flop? 
9.implement all gates using nand and nor gates? 
10.swaping with out temperory variables? 
11.dynamic memory allocation? 
12.what is phase modulation, amplitude and frequency modulation? 
13.area of trapezium? 
14.area of square? 
15.area of circle?