Sathyabama University BE EEE V Sem Transmission & Distribution Exam Question Papers

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The Sathyabama University BE EEE V Sem Transmission & Distribution Exam Question Paper is given below:

SATHYABAMA UNIVERSITY
(Established under section 3 of UGC Act,1956)
Course & Branch :B.E - EEE
Title of the Paper :Transmission & Distribution Max. Marks :80
Sub. Code :414506/514405/614401 Time : 3 Hours
Date :26/04/2010 Session :FN
_________________________________________________

PART - A (10 x 2 = 20)

Answer ALL the Questions
1. What are the limitations of increasing the transmission voltage
level to very high value?
2. What are the limitations of Kelvin’s law?
3. List the advantages of bundled conductors.
4. What do you mean by self G.M.D?
5. What is the effect of load power factor on regulation and
efficiency of a transmission line?
6. What is tuned power line?
7. What are the advantages of underground cable when compared to
over head transmission system?
8. Define string efficiency.
9. What is the role of arcing ground?
10. Write the function of lightning arresters.

PART – B (5 x 12 = 60)

Answer All the Questions
11. (a) Draw and explain the line diagram of a typical transmission
and distribution scheme. Indicate clearly the voltage levels used
at different stages.
(b) Compare A.C systems and D.C. systems used in transmission
and distribution.
(or)
12. Briefly explain with help of neat diagram of the following
(a) SVC (b) STATCOM
13. (a) Derive the expression for inductance of a single phase two
wire line.
(b) Calculate the loop inductance per km of a single phase
transmission line consisting of two parallel conductors 1.5m apart
and 1.5 cm in diameter. Calculate also the reactance of the
transmission line if it is operating at a frequencyof 50 Hz.
(or)
14. (a) Derive the expression for capacitance of asingle phase line.
(b) A single phase transmission line has two parallel conductors
5m apart, radius of each conductor being 1.5cm. Calculate the
capacitance of the line per km. Given that ε
0
= 8.854 x 10
-12
F/m.
15. A 3 phase line delivers 3000 Kw at a p.f of 0.8lagging to a load.
If the sending end voltage is 33 kV, determine
(a) Receiving end voltage
(b) Line current
(c) Transmission efficiency.
The resistance and reactance of each conductor is 5ohm and 8
ohm respectively.
(or)
16. Explain the procedure to draw the receiving endand sending end
power angle diagram.
17. (a) List the types of insulators. (4)
(b) Draw and explain the construction details of pin type
insulator. Also state its merits and demerits. (8)
(or)
18. (a) Name the types of underground cables. (3)
(b) Draw and explain the general construction of under ground
cables. (9)
19. Write short notes on
(a) Peterson coil
(b) Surge absorbers
(or)

20.Explain in detail any two causes for over voltages.