Across
- 3. ______ gas is a deoxidizing agent
- 4. Press board and normal papers are also made of _____
- 5. Varnish is in the ______ form
- 11. Absorption of moisture from the atmosphere by the insulating material is called as _______
- 15. Paper are ________ when used as insulation
- 16. _______ are clay products which are sintred and fused at high temperature of about 1500
- 17. At atmospheric pressure the dielectric strength of _______ hexafluoride is 2.35 times more than air
- 19. Transformer core stamping are coated by ______
- 22. The materials which do not allow the electricity to pass through them is known as Electrical ______ materials
- 23. ______ is a mineral fibrous material and has low dielectric properties than mica
Down
- 1. _____ is the most common ceramic used for low as well as high voltage electrical applications
- 2. Bakelite is made by the reaction between _______ and Formaldehyde
- 6. Good arc _____ is the ability absorb spark
- 7. Alumina is made from _______ oxide
- 8. board _______ is similar to paper but is more denser and less flexible than paper
- 9. _______ and press phan are types of press boards used in slot lining
- 10. The _______ oils are the oldest insulating liquid used in the manufacturing of electrical machines
- 12. Line insulators are made from good quality _____ which has good qualities of insulation
- 13. _____ is the most important of all the gases and it is gift of nature
- 14. _____ is a mineral and found in the form of plates
- 18. ______ percentage of the world requirement of Mica is fulfilled by India
- 20. The density of sulphur hexafluoride is ______ times more than air
- 21. An alternative porcelain is _______