Quiz

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Year 2024

October
Week # 2 Quiz 5

Q1. A 183-bus power system has 150 PQ buses and 32 PV buses. In the general case, to obtain the load flow solution using Newton-Raphson method in polar coordinates, the minimum number of simultaneous equations to be solved is _____________.

Q2. A Transmission line has a length of \(400 \: km\) long. The sending end voltage is \(V_s = 1 \: pu\), find the receiving end voltage \(V_r\) at no load.

Q3. An industrial consumer has a connected load of 10 machines, each having a rating of 10 kW. The maximum demand is 80 kW. On an average each machine works for 8 hrs a day for 300 working days in a year. The tariff is Rs. 10000 + Rs. 800 per kW of maximum demand + Rs. 1.15 per kWh of energy consumed. The annual bill of the consumer will be:

Q4. The induced voltages on the transmission lines due to electrostatic and electromagnetic induction is reduced by

Q5. Q-axis current injection causes sinusoidal component to exist in ________________during islanding condition

Q6. Which lightning stroke is most dangerous?

Q7. Cables are generally not used for high voltage A.C. transmission because

Q8. According to IS802:1995, the small angle towers with tension string can be used for line deviation from

Q9. What can enhance the accuracy of load forecasts using the load increase factor method?

Q10. For the circuit breakers, recovery voltage across the breaker poles depends on