SSC JE Electrical Engineering 2014 Set 1 Paper

© examsiri.com

Question : 154 of 200

Marks: +1, -0

If K is the phase -to-phase voltage ratio, then theline-to-line voltage ratio in a 3-phase Y –

∆

transformer is

K
$K \/ √3$
$√3 K$
$√3 \/ K$

Solution:

Line voltage

= √3V_{P (s )}

is star

Line voltage in Delta =

V_{P (∆ )}

{V_{P (s )} }/{V_{P (∆ )}}=K

{V_{L (s )} }/{V_{L (∆ )}}={√3V_{P (s )}}/V_{P (∆ )}=√3K

© examsiri.com

Go to Question:

Prev Question

Next Question