Electrical Engineering MCQs on Power Transmission
Contents
In capacitance grading of cables which of following is used
In capacitance grading of cables which of following is used
- Composite dielectric
- Homogeneous dielectric
- Hygroscopic dielectric
- Porous dielectric
Correct answer: 1. Composite dielectric
In single core cables armouring is not done to
In single core cables armouring is not done to
- Avoid excessive sheath losses
- Make it flexible
- Either of above
- None of these
Correct answer: 1. Avoid excessive sheath losses
The minimum dielectric stress in cables is at
The minimum dielectric stress in cables is at
- Armour
- Bedding
- Conductor surface
- Lead sheath
Correct answer: 4. Lead sheath
Empire tape is
Empire tape is
- Impregnated paper
- Varnished cambric
- Vulcanized rubber
- None of these
Correct answer: 2. Varnished cambric
Dielectric strength of rubber is about
Dielectric strength of rubber is about
- 15 kV/mm
- 200 kV/mm
- 30 kV/mm
- 5 kV/mm
Correct answer: 3. 30 kV/mm