Single core cable design for 25 kV. The radius of conductor is 0.5 cm. The insulation material consists of two layers. The thickness of each layer is 2 cm. The voltage of first and second layers are 20 kV, 5 kV respectively. The maximum * Electric stress of the cable is 18.36 kV/cm O 35.56 kV/cm 24.85 kV/cm 14.35 kV/cm O Non of them O

17. Which of the following measurements should be recorded in installation documentation?A. Multimeter measurementsB. OTDR measurements onlyC. Power meter measurements onlyD. All power meter and OTDR measurements

3. When a major fault occurs, in order to stabilize the power system, the system immediately uses . automatic generator control b. governor control c. automatic dispatch d. relays 4. during a major hurricane, a lightning strikes a transmission line carrying power from Oregon to California. The frequency of the power system in California will a. increase above 60HZ b. Fall below 60 Hz c.) Stays the same.

Explain the importance of power system protection. Discuss various types of protection devices and strategies used to safeguard electrical infrastructure from faults and disturbances.