www.andhracolleges.com
Seminar Topics - Scholarships - Admission/Entrance Exam Notifications
USA-UK-Australia-Germany-France-NewZealand Universities List
Engineering-MBA-MCA-Medical-Pharmacy-B.Ed-Law Colleges Information
www.andhracolleges.com The Complete Information About Colleges in Andhra Pradesh
www.andhracolleges.com
www.andhracolleges.com
Code No: Z0222/R07
Set No. 1
I B.Tech Supplementary Examinations, November 2009
ELECTRICAL CIRCUITS ANALYSIS
( Common to Electrical & Electronic Engineering and Instrumentation &
Control Engineering)
Time: 3 hours
Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
? ? ? ? ?
1.
(a) Four resistances of equal value are available. Find
i. The total equivalent conductance and total equivalent resistance ratio
ii. The ratios of current drawn in each configuration
iii. The ratios of power drawn by each configuration in each element.
Considering that the supply voltage is same when the configuration are
in series and parallel.
(b) Find RAB in the network as shown in figure 1b.
[10+6]
Figure 1b
2.
(a) Derive an expression for the energy stored in an inductor and a capacitor.
(b) Obtain an expression for Co-efficient of coupling.
[10+6]
3. Define RMS and Average values of an alternating quantity. Find the rms value,
average value, form factor and peak factor of a full wave rectified wave form. [16]
4.
(a) Three identical impedances of (3+j4)Ω are connected in delta. Find an equiv-
alent star network such that the line current is the same when connected to
the same supply.
(b) Three impedances of (7+j4)Ω, (3+j2)Ω and (9+j2)Ω are connected between
neutral and the R, Y and B phases. The line voltage is 440V, Calculate.
i. The line currents and
ii. The current in the neutral wire.
1 of 3
www.andhracolleges.com
Seminar Topics - Scholarships - Admission/Entrance Exam Notifications
USA-UK-Australia-Germany-France-NewZealand Universities List
Engineering-MBA-MCA-Medical-Pharmacy-B.Ed-Law Colleges Information
www.andhracolleges.com The Complete Information About Col