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A 
line of length 
has the following parameters:
Resistance, 
Inductance, 
;
Capacitance, 
The line is represented by the nominal- 
model. With the magnitudes of the sending end and the receiving end voltages of the line (denoted by 
and 
, respectively) maintained at 
, the phase angle difference 
between and required for maximum possible active power to be delivered to the receiving end, in degree is ________ (Round off to 2 decimal places).
The expression for active power delivered to receiving end is,
For maximum value of PR
Phase shift b/w Vs & VR δ = β
For nominal π-model, ABCD parameter are given by
L = 1 mH/km × 400 km = 400 mH = 0.4 H
R = 0.035 Ω/Km × 400 km = 14Ω
