1.
The action of electromagnetic machines can be related to which of the following basic principles __________?

2.
The change in flux linkages can be caused in which of the following ways ?

3.
Commercial available medium size machines have a speed range of __________ ?

4.
__________ has a low relative permeability and is used principally in field frames when cost is of primary importance and extra weight is not objectionable?

5.
_______________is universally used for windings of electrical machines because it is easily workable without any possibility of fracture?

6.
Materials exhibiting zero value of resistivity are known as ____________ ?

7.
Hot rolled sheets have ___________ value of permeability?

8.
Aluminium when adopted as a conductor material in __________ transformers, decreases the overall cost of the transformer?

9.
__________is extensively used for those portions of magnetic circuit which carry steady flux and need superior mechanical properties ?

10.
The heat dissipated by from a surface depends upon its temperature and its characteristics like colour, roughness etc?

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