Power System Quiz 2

Single line diagram of which of the following power system is possible?

• Power system with LG fault

• Balanced power system

• Power system with LL fault

• Power system with LLG fault

A power system will have greater flexibility of operation if they have __________

• Only Base load plants operating in combination

• Various types of power plants operating in combination

• Only Peak load plants operating in combination

• Only thermal power plants operating in combination

Single line diagram does not represents:

• Ratings of machines

• Neutral wire of transmission lines

• Delta connection of transformer winding

• Star connection of transformer winding

In the impedance diagram different power system elements are represented by symbols.

• False

• True

In the combined operation of several power plants the reserve capacity requirement is reduced.

• False

• True

For a given power system, it's zero and maximum regulation will occur at the impedance angle of

• 45

• 60

• 35

• 50

A 200 bus power system has 160 PQ bus. For achieving a load flow solution by N-R in polar coordinates, the minimum number of simultaneous equation to be solved is ___________

• 359

• 334

• 357

• 345

A 50 bus power system Ybus has 80% sparsity. The total number of transmission lines will be ___________

• 225

• 563

• 345

• 456

The given graph is the depiction of ________ on a large power system network.

• Three phase motor getting short

• L-G fault

• Ratings of machines

• Any of the mentioned

A protection system engineer is planning to provide the complete protection, he can achieve this by ___________

• a two phase fault relays and three earth fault relays

• a two phase fault relays and two earth fault relays

• two phase fault relays and three earth fault relays

• three phase fault relays and two earth fault relays