Describe the necessity of single C.B, one & half C.B. and double C.B-scheme.
Explain the necessity of neutral Point grounding.
Select the suitable grounding method for given system:
Explain advantages of neutral grounding.
Explain the advantages of interconnected power stations.
Draw the line diagram of Pakistan National Grid System of 500 KV, 220 KV,
UNDERSTAND SHORT CIRCUIT FAULT CONSIDERATIONS IN THE POWER SYSTEMS.
Draw the single line diagram of power system.
Write the formula of percentage reactance and percentage reactance at base KVA.
Solve the short circuit KVA at symmetrical fault (Simple Problems).
Solve the short circuit capacity of a Alternator in a system (Simple Problems).
UNDERSTAND THE NEEDS, TYPES AND LOCATIONS OF REACTORS.
Explain the necessity of reactors.
Explain the type of reactors from constructional point of view.
Propose the location of reactors in a system (Feeder, Bus Bar, Generator).
Point out the advantages & disadvantages of reactors.
Draw a diagram showing the reactor in a ring system, Tie-Bar system.
UNDERSTAND THE TYPES, CONSTRUCTION AND WORKING OF CIRCUIT BREAKERS.
Explain the theory of A.C Arc Interruption.
State the arc phenomena.
Enlist type of circuit breakers.
Explain working and construction of oil circuit breaker.
Discuss advantages and disadvantages of O.C.B.
Enlist the types of O.C.B,
also discuss the comparison between each case.