CL wadhwa bits solutions (130-134)

Lesson 3 of 26 • 50 upvotes • 10:57mins

Anvesh Sameer

130. If the inductance and capacitance of a system are 1 H and 0.01 μF respectively and the instantaneous value of current interrupted is 10 amps, the value of shunt resistance across the breaker for critical damping is: (a) 100 kΩ (b) 10 kΩ (c) 5 kΩ (d) 1 kΩ . 131. For load flow solution the quantities specified at a load bus are: (a) P and Q (b) P and |V| (c) Q and |V| (d) P and δ. 132. The solution of coordination equations takes into account: (a) All the system constraints (b) All the operational constraints (c) All the system and operation constraints (d) None of the above. 133. For a two-bus system if the change in load at bus 2 is 5 MW and the corresponding change in generation at bus 1 is 8 MW, the penalty factor of bus 1 is: (a) 0.6 (b) 1.67 (c) 0.625 (d) None of the above. 134. If the penalty factor for bus 1 in a two-bus system is 1.25 and if the incremental cost of production at bus 1 is Rs. 200 per MWhr, the cost of received power at bus 2 is: (a) Rs. 250/MWhr (b) Rs. 62.5/MWhr (c) Rs. 160/MWhr (d) None of the above.