The best material for the core of a transformer is
A). Stainless steel
B). Mild steel
C). Hard steel
D). Soft iron
Soft iron
Soft iron provides the best material for the core of a transformer as its permeability (μ) is very high. Its hysteresis curve is of small area and its coercivity is very low.
2. Which phase change is an example of an exothermic process?
3. The recoiling of gun is an example of which of the following?
4. The Instrument used to see the distant objects on the Earth is
5. Which of the following refers to too much electricity and may cause a voltage surge?
6. The shape of a rain drop is spherical?due to -
8. Which of the following is arranged in order of decreasing conductivity?