04-06-2012, 11:35 AM
ELECTRICAL DISTRIBUTION SYSTEMS - Question paper
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1. (a) Brie
y explain the line drop compensation on voltage control.
(b) Voltage control and p.f. correction are necessary in power systems? Explain.
What are the disadvantages of low voltage and low p.f. of the system?
2. (a) A 50MW hydro generator delivers 320 million kWh during the year. Calculate
the plant load factor.
(b) Explain the load characteristics of distribution system.
3. (a) Explain the salient points in general co-ordination procedure.
(b) ExplainFuse- Fuse coordination
4. What are the vari ous factors considered while selecting a over current protective
device. Explain the operation of circuit recloser and circuit breaker.
5. (a) Discuss the basic features of applicapability of compensation through shunt
and series capacitors in radial distribution systems.
(b) Compare and explain the role of shunt and series capacitors in power factor
correction.
6. (a) Classify dierent types of primary feeders and give their merits and demerits.
(b) Explain basic design practice of secondary distribution system and also discuss
about secondary banking.
7. Derive the equation for `k' constant in voltage drop calculations of substation sup-
plied with `n' primary feeders.
8. (a) Draw and explain typical four - wire multi - grounded common neutral distri-
bution system.
(b) Derive the condition of load factor for which the voltage drop is maximum.