A 200/400 V single phase transformer has leakage impedance z= r+jx. Th – McqOptions

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1.	A 200/400 V single phase transformer has leakage impedance z= r+jx. Then we can expect magnitude of load pf of ____ at zero voltage regulation.
A.	cos‚âà√≠‚Äö√†√® = x/z
B.	cos‚âà√≠‚Äö√†√® = r/z
C.	cos‚âà√≠‚Äö√†√® = x/r
D.	cos‚âà√≠‚Äö√†√® = r/x
Answer» B. cos‚âà√≠‚Äö√†√® = r/z

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