WBUT 2013 SIGNAL SYSTEM QUESTION PAPER (Paper code EC-303 )

WBUT 2013 Semester Question Paper for SIGNAL & SYSTEM. This Paper is currently included in the syllabus of ELECTRONICS AND COMMUNICATION ENGINEERING(ECE) branches in third sem(2nd year-First sem).                                                                                    

                                                               CS/B.Tech/(ECE-New)/SEM-3/EC-303/2013-2014

                                                                                       2013

                                                                            SIGNAL & SYSTEM

Time  Allotted : 3 Hours                                                                                 Full Marks : 70

The figures in the margin indicate full marks.

Candidates are required to give their answers in their own words

as far as practicable.

GROUP – A

(Multiple Choice Type Question)

                                 1. Choose the correct alternatives for any ten of the following:
                                                                                                                                         10 x 1 = 10

                                             i) Laplace Transform of  is

                                                      a)1/(s+a)                                                 b)  1/(s-a)

                                                      b) a/(s+a)                                                d )  a/(s-a)

                                            ii) x(t)=asinwt is an

                                                      a)odd signal                                            b)even signal

                                                      c)both (a) and (b)                                     d)either (a)  or (b).

                                           iii)The signal x(n)= 1+e^j4*pi*n/7  - e^j2*pi*n/5  is periodic with period of

                                                      a) 5/7                                                       b)7/5

                                                      c)  4/7                                                      d )4/5

                                          iv)  The system define as y(n)=2x(n)+3x( n²) is

                                                     a)static , causal                                         b)dynamic ,causal

                                                     c)static ,non-causal                                  d)dynamic ,non-causal

                                          v)  ROC of unit step function is

                                                     a) |z|<1                                                   b) |z|>1

                                                     c) |z|=1                                                   d)none of these

                                        vi)  The discrete time system defined as 

                                                                                H(z)=(z³-3z²+2z)/(z²+z/2-1/4)   is

                                                    a)causal

                                                    b) non-causal

                                                     c)none of these

                             for full question download attchment file.