1
GATE EE 2007
MCQ (Single Correct Answer)
+2
-0.6
$$230$$ $$V$$ (phase) $$50$$ Hz, three-phase, $$4$$-wire, system has a sequence $$ABC$$. A unity power-factor load of $$4$$ kW is connected between phase A and neutral $$N$$. It is desired to achieve zero neutral current through the use of a pure inductor and pure capacitor in the other two phases. The Value of inductor and capacitor is......
A
$$72.95$$ $$mH$$ in phase $$C$$ & $$139.02$$ $$\mu F$$ in Phase $$B$$
B
$$72.95$$ $$mH$$ in Phase $$B$$ & $$139.02$$ $$\mu F$$ in Phase $$C$$
C
$$42.12$$ $$mH$$ in Phase $$C$$ & $$240.79$$ $$\mu F$$ in Phase $$B$$
D
$$42.12$$ $$mH$$ in Phase $$B$$ & $$240.79$$ $$\mu F$$ in Phase $$C$$
2
GATE EE 2007
MCQ (Single Correct Answer)
+2
-0.6
Single line diagram of a $$4$$-bus single source distribution system is shown below. Branches $${e_1},\,\,$$ $${e_2},\,\,$$ $${e_3}\,\,$$ and $${e_4}\,\,$$ have equal impedences. The load current values indicated in the figure are in per unit. GATE EE 2007 Power System Analysis - Parameters and Performance of Transmission Lines Question 6 English

Distribution Company's policy requires radial system operation with minimum loss. This can be achieved by opening of the branch

A
$${e_1}$$
B
$${e_2}$$
C
$${e_3}$$
D
$${e_4}$$
3
GATE EE 2006
MCQ (Single Correct Answer)
+2
-0.6
The $$A, B, C, D$$ constant of a $$220$$ $$kV$$ line are:
$$A = D = 0.94\,\angle \,10,\,\,\,B = 130\,\angle \,730,\,\,\,C = 0.001\,\angle \,900.\,\,$$ If the sending end voltage of the line for a given load delivered at nominal voltage is $$240$$ $$kV$$, the % voltage regulation of the line is
A
$$5$$
B
$$9$$
C
$$16$$
D
$$21$$
4
GATE EE 2005
MCQ (Single Correct Answer)
+2
-0.6
At an industrial sub-station with a $$4$$ $$MW$$ load, a capacitor of $$2$$ MVAR is installed to maintain the load power factor at $$0.97$$ lagging. If the capacitor goes out of service, the load power factor becomes
A
$$0.85$$ lag
B
$$1.00$$ lag
C
$$0.80$$ lag
D
$$0.90$$ lag
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