Author: Patan Younus

1.what is a poly house? poly house is a modern method of farming in a controlled environment under a polly thene cover quality produce is obtained by managing temperature, humidity, light and water. 2.Types of poly house:-...

Azolla :- Azolla is a floating water plant. It absorbs nitrogen from the air and fixes it firmly within its roots. Because of this propertly, Azolla is widely used in rice (paddy) farming: It has an exceptionally fast growth...

1.Twisted joint (Rat-tail/ pig-tail):- Made by Stripping and twisting two wires together used in junction boxes where there is no mechanical tension. 2.Straight joint:- used to extend the length of a Single wire or cable in a...

Electrical symbols and its types :- 1.Switches and switch oulet symbols. 2.Socket oulet symbols. 3.Lamps symbols. 4. Electrical applications symbols. 5.Bells, Buzzers & sirens symbols. 6. Fans symbols. 7.Earthing...

Installation CCTV camera:- 1.Hardware:- CCTV camers (Bullet or Dome), DVR Or NVR recorder, and a Surveillance Hard Disk Drive (HDD). 2. cabling:- Siamese Coaxial cable RG59 with power wires) for analog or Cat 6 Ethernet Cable...