WBUT 2009: Circuit Theory & Networks (Paper Code: EE301) Question Paper

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CS/B.Tech(ECE,EE,EEE,IC,BME,PWE,CSE,IT)/SEM-3/EE-301/2009-10

2009
CIRCUIT THEORY & NETWORKS

Time Allotted:3 Hours                      Full Marks:70
The Figures in the margin indicate full marks.
Candidates are requested to give their answer in their own words as far as practicable.

 

 

Group -A
(Multiple Choice Type Questions)


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

i) Laplace Transform analysis gives
(a) Time domain response only
(b) Frequency domain response only
(c) both (a) & (b)
(d) real response only

 

ii) If a function is shifted by 'T', then it is correctly represented as
(a)  [tex]f(t - T)u(t)[/tex]
(b)  [tex]f(t - T)u(t - T)[/tex]
(c)  [tex]f(t)u(t - T)[/tex]
(d)  [tex](t - T)f(t - T)[/tex]

 

iii) The equivalent resistance between x & y of the figure shown below is

(a)  30Ω

(b)  50Ω

(c)  60Ω

(d)  10Ω

 

iv) If f(t) is an even function, then its Fourier transform F(jw) is given by

(a)  [tex]2\int\limits_0^\infty  {f(t)\cos wtdt}[/tex]

(b)  [tex]\int\limits_0^\infty  {f(t)\cos wtdt}[/tex]

(c)  [tex]2\int\limits_0^\infty  {f(t)\sin wtdt}[/tex]

(d)  [tex]\int\limits_0^\infty  {f(t)\sin wtdt}[/tex]

 

v) The Thevenin's equivalent resistance of the given circuit with respect to the terminals A&B is equal to

(a)  2.66Ω

(b)  3.2Ω

(c)  8Ω

(d)  12Ω

 

 

 

 

 

 

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