1
GATE EE 2003
+2
-0.6
A surge of 20 kV magnitude travels along a lossless cable towards its junction with two identical lossless overhead transmission lines. The inductance and the capacitance of the cable are 0.4 mH and 0.5 $$\mu F$$ per km. The inductance and capacitance of the overhead transmission lines are 1.5 mH and 0.015 $$\mu F$$ per km. The magnitude of the voltage at the junction due to surge is
A
36.72 kV
B
18.36 kV
C
6.07 kV
D
33.93 kV
2
GATE EE 2003
+2
-0.6
A dc distribution system is shown in figure with load currents as marked. The two ends of the feeder are fed by voltage sources such that $${V_P} - {V_Q} = 3V.$$ the value of the voltage $${V_P}$$ for a minimum voltage of $$220$$ $$V$$ at any point along the feeder is
A
$$225.89$$ $$V$$
B
$$222.89$$ $$V$$
C
$$220.0$$ $$V$$
D
$$228.58$$ $$V$$
3
GATE EE 2003
+2
-0.6
A balanced delta connected load of $$\left( {8 + j6} \right)\Omega$$ per phase is connected to a $$400$$ $$V$$, $$50$$ $$Hz$$, $$3-$$phase supply lines. If the input power factor is to be improved to $$0.9$$ by connecting a bank of star connected capacitors the required KVAR of the bank is
A
$$42.7$$
B
$$10.2$$
C
$$28.8$$
D
$$39.4$$
4
GATE EE 2001
+2
-0.6
Consider the model shown in figure of a transmission line with a series capacitor at its mid-point. The maximum voltage on the line is at the location
A
$${P_1}$$
B
$${P_2}$$
C
$${P_3}$$
D
$${P_4}$$
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