engineering recuitment Indian Coast Guard Yantrik Mock Test 2024 Power Systems PU System and Symmetrical Components Per Unit System
Write the expression to calculate p.u. impedance. Let Vb, be the base voltage, Z is the Actual impedance and kVAb be the base kilovolt amperes.
1
p.u. impedance = \(Z\times kVA_B\times 1000\times V_t^2\)
2
p.u. impedance = \(V_B^2\times kVA_B\times 1000\)
3
p.u. impedance = \(Z\times kVA_B\times \frac{1000}{(kV_B)^2}\)
4
p.u. impedance = \(\frac{V_B^2}{kVA_b}\times 1000\)