Electrical Engineering MCQs on Power Transmission Part 42
Contents
Cables for 220 kV lines are invariably
Cables for 220 kV lines are invariably
- Compressed oil or compressed gas insulated
- Mica insulated
- Paper insulated
- Rubber insulated
Correct answer: 1. Compressed oil or compressed gas insulated
The location of fault in cables is generally found by comparing
The location of fault in cables is generally found by comparing
- The capacitances of insulated conductors
- The inductance of conductors
- The resistance of the conductor
- All of above parameters
Correct answer: 1. The capacitances of insulated conductors
Charging current in cables leads or lags voltage. It
Charging current in cables leads or lags voltage. It
- Lags the voltage by 180°
- Lags the voltage by 90°
- Leads the voltage by 180°
- Leads the voltage by 90°
Correct answer: 4. Leads the voltage by 90°
In case of three core flexible cables the color of the neutral is
In case of three core flexible cables the color of the neutral is
- Black
- Blue
- Brown
- None of these
Correct answer: 2. Blue
The benefit of oil filled cables is
The benefit of oil filled cables is
- More perfect impregnation
- No ionization, oxidation and formation of voids
- Smaller overall size
- All of these
Correct answer: 4. All of these