Spin Up 4-75 open circuit test error?

[thebard]

The question asks: "During an open circuit test for a transformer?"

a) The high side has rated voltage applied, b) The high side is open, c) The low side is shorted, d) Both a & c, e) None of the above.

They have b as the answer, but this seems totally wrong. It should be a?

 

[Bonsai]

I don't have that set of problems, but I definitely think A is the right answer. 

 

[thebard]

Yea, and the answer key says "The open circuit test has the high side open"... :/

 

[rg1]

Ok. It is like this. In Oc test you can apply rated Voltage on any side but we apply it on LV side because lower Voltage is easy to handle and and measure. Similarly for SC ckt test, we do it on lower current side (HV side). The question is actually a vague.