1. The voltages at the two ends of the line are 132 kV and its reactance is 40 Ω. The capacity of the line is
a. 435.6 MW
b. 217.5 MW
c. 251.5 MW
d. 500.0 MW
2. The shunt compensation in 765 kV line is primarily used to
a. increase power transfer capability.
b. reduce fault current level.
c. improve voltage profile.
d. decrease corona loss.
3. With the use of bundled conductors in power transmission line
a. inductance decreases but no change in capacitance.
b. inductance decreases but capacitance increase.
c. inductance increases but no change in capacitance.
d. capacitance decrease with decrease in corona loss.
4. For long uncompensated transmission line, the limit to the line loading is governed by
a. thermal limit.
b. voltage drop limit.
c. stability limit.
d. corona loss.
5. What is steady-state stability limit of power angle curve
a. 0 degree
b. 90 degree
c. 180 degree
d. 270 degree
6. If the surge impedance of 200 km long transmission line is 350 Ω, then surge impedance of the 400 km line will be
a. 700 Ω
b. 1400 Ω
c. 175 Ω
d. 350 Ω
7. The surge impedance of a 3-phase, 400 kV transmission line is 400 ohms. The surge impedance loading of the line (SIL) is
a. 400 MW
b. 100 MW
c. 1600 MW
d. 200 MW
8. When a long line is operating under lightly loading condition, the receiving end voltage is greater than the sending end voltage. This effect is known as
a. Skin effect
b. Proximity effect
c. Ferranti effect
d. Carson’s effect
9. The per-unit impedance of a circuit element is 'X'. If the base kV is halved and base MVA is doubled, then the new value of the per unit impedance of the circuit element will be
a. X/2
b. 2X
c. 4X
d. 8X
10. The quantities to be obtained for a load bus are
a. real and reactive power
b. voltage magnitude and phase angle
c. real power and voltage magnitude
d. reactive power and phase angle
Thank You.