The material used for fuse must have low melting point and high specific resistance.
Description : State the material used for making (1) Magnetic Core (2) Fuse element
Answer : The material used for making of: (1) Magnetic Core : Iron, cobalt, Nickel, CRGO, HRGO , silicon steel (2) Fuse Element: Tin- lead wire, Tinned copper wire
Description : The material used in liquid fuses is (1) SF6 (3) carbon tetra chloride (2) distilled water (4) transformer oil
Answer : The material used in liquid fuses is carbon tetra chloride
Description : State properties of conductor material used for overhead conductor.
Answer : Following are the properties of conductor material:- 1. High conductivity :- Material should have high conductivity 2. High mechanical strength:- Material should have sufficiently high mechanical strength ... available & less costly. 9. Scrap Value: - Material should have high scrap value.
Description : Name the material used for :- (i) Moving coil (ii) Permanent magnet in PMMC instrument.
Answer : (i) Material used for Moving coil: Copper, Aluminum( some times) (ii) Permanent magnets are made of special alloys such as : Aluminum-Nickel-Cobalt (Alnicos) Strontium-Iron Neodymium-Iron-Boron Samarium-Cobalt.
Description : State the material used for moving coil and former for PMMC instruments.
Answer : Material Used for Moving Coil and Former for PMMC Instruments: Material used for moving coil: Copper Material used for Former: Aluminium