Year 2024

Week # 3 Quiz 1

Q1. In a D.C. transmission line which statement is true?

Q2. For a 15-bus power system with 3 voltage controlled bus, the size of Jacobian matrix is

Q3. Which of the following statement is true

Q4. In a power system, the range of torque angle for which \(\frac{dp}{d\delta} \) is positive, lies between:

Q5. The normal percentage bias setting of differential relay used for transformer protection will be

Q6. Consider the following statements and select the correct answer:
Statement 1: Series capacitor increases the load angle for the same amount of power transfer with constant values of sending end and receiving end voltages.
Statement 2: Series capacitor helps to equalize the power sharing between the lines.

Q7. A 3-phase, \(66kV\) power cable delivering power at 50 Hz, has a capacitance of \(0.2 \mu F/km\). If the dielectric loss tangent of cable is \(2 \times 10^{-4}\), then dielectric power loss in this cable in \(W/km/phase\) is _____.

Q8. A lighting discharge between clouds during a thunder storm is of 30 C. The time of the discharge is 10 msec. Determine the average lighting current:

Q9. Surge impedance loading of a transmission line can be increased by

Q10. The solar radiation falls at the Earth's surface includes:
(i) Direct radiation that has passed through the atmosphere
(ii) Diffuse radiation from the sky
(iii) Absorbed radiation from the water
Select the correct answer using the code given below: