1. Stones are provided in the substation to:
a) To avoid fire accident by draining oil from transformer if leaks
b) To avoid growing of weeds and plants
c) To provide insulation
d) All the above
2. In order to improve the power factor ___ device is employed in the substation
a) Synchronous condenser
b) Synchronous reactor
c) Series Capacitors
d) None of the above
3. What is the minimum phase to phase clearance required for 400kV conductors in substation:
a) 3500 mm
b) 4200 mm
c) 5000 mm
d) 4500 mm
4. In substation which of the device is a carrier communication device:
a) CVT
b) Earth conductor
c) Wave trap
d) Lightning arrestor
5. Which of the device is employed in substation to limit the short circuit current in the power system:
a) Shunt condenser
b) Reactor
c) Series capacitor
d) Shunt capacitor
6. Which of the following busbar arrangement is generally employed in distribution system:
a) One-and-half breaker arrangement
b) Main and transfer arrangement
c) Ring main distribution system
d) Single busbar arrangement system
7. Earthing conductivity is affected by:
a) Moisture content in the soil
b) Chemical composition
c) Concentration of salts in the soil
d) All the above
8. Emulsifier protection is associated with:
a) Grounding protection
b) Dielectric strength protection of cables and conductors
c) Lightning protection
d) Fire protection
9. The size of Gas Insulated Substation is significantly small compared to conventional substation because:
a) High electronegative property of SF6 gas
b) High dielectric property of SF6 gas
c) High Insulation property of SF6 gas
d) All the above
10. What is Marshalling Kiosk in power transformer:
a) It provides alarms, trips, controls and indications from main transformer
b) It is the base on which transformer rail is provided to pull and push transformer
c) It is the pressure device ruptures when temperature inside transformer increases
d) None of the above
a) To avoid fire accident by draining oil from transformer if leaks
b) To avoid growing of weeds and plants
c) To provide insulation
d) All the above
2. In order to improve the power factor ___ device is employed in the substation
a) Synchronous condenser
b) Synchronous reactor
c) Series Capacitors
d) None of the above
3. What is the minimum phase to phase clearance required for 400kV conductors in substation:
a) 3500 mm
b) 4200 mm
c) 5000 mm
d) 4500 mm
4. In substation which of the device is a carrier communication device:
a) CVT
b) Earth conductor
c) Wave trap
d) Lightning arrestor
5. Which of the device is employed in substation to limit the short circuit current in the power system:
a) Shunt condenser
b) Reactor
c) Series capacitor
d) Shunt capacitor
6. Which of the following busbar arrangement is generally employed in distribution system:
a) One-and-half breaker arrangement
b) Main and transfer arrangement
c) Ring main distribution system
d) Single busbar arrangement system
7. Earthing conductivity is affected by:
a) Moisture content in the soil
b) Chemical composition
c) Concentration of salts in the soil
d) All the above
8. Emulsifier protection is associated with:
a) Grounding protection
b) Dielectric strength protection of cables and conductors
c) Lightning protection
d) Fire protection
9. The size of Gas Insulated Substation is significantly small compared to conventional substation because:
a) High electronegative property of SF6 gas
b) High dielectric property of SF6 gas
c) High Insulation property of SF6 gas
d) All the above
10. What is Marshalling Kiosk in power transformer:
a) It provides alarms, trips, controls and indications from main transformer
b) It is the base on which transformer rail is provided to pull and push transformer
c) It is the pressure device ruptures when temperature inside transformer increases
d) None of the above
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