The usual values of maximum flux densities for distribution transformers using hot rolled silicon steel are______________?

Related Mcqs:

Materials exhibiting zero value of resistivity are known as ____________ ?

A. conductors B. semiconductors C. insulators D. superconductors...

The slot leakage can be calculated by making which of the following assumptions ?

A. The current in the slot conductors is uniformly distributed over their cross-section B. The leakage path is straight across the slot and around the iron at the bottom C. The permanence of air paths is only considered. The reluctance of iron paths is assumed as zero D. All of the above...

Power transformers have rating_______________?

A. equal to 50 kVA B. equal to 100 kVA C. above 200 kVA D. none of the above...

Which of the following brushes can be used for high values of current density ?

A. Metal graphite brushes B. Hard carbon brushes C. Electro-graphitic brushes D. Natural graphite brushes...

Transformers with a capacity of up to __________ have a cooling radiator system with natural cooling?

A. 2 MVA B. 5 MVA C. 7.5 MVA D. 10 MVA...