1
GATE EE 2014 Set 2
+2
-0.6
The horizontally placed conductors of a single phase line operating at $$50$$ $$Hz$$ are having outside diameter of $$1.6$$ cm, and the spacing between centers of the conductors is $$6$$ m. The permittivity of free space is $$8.854 \times {10^{ - 12}}\,\,F/m.$$ The capacitance to ground per kilometer of each line is
A
$$4.2\,\, \times \,\,{10^{ - 9}}F$$
B
$$8.4\,\, \times \,\,{10^{ - 9}}F$$
C
$$4.2\,\, \times \,\,{10^{ - 12}}F$$
D
$$8.4\,\, \times \,\,{10^{ - 12}}F$$
2
GATE EE 2014 Set 2
+1
-0.3
Shunt reactors are sometimes used in high voltage transmission systems to
A
limit the short circuit current through the line
B
compensate for the series reactance of the line under heavily loaded condition
C
D
compensate for the voltage drop in the line under heavily loaded condition.
3
GATE EE 2014 Set 2
Numerical
+1
-0
A three phase star-connected load is drawing power at a voltage of 0.9 pu and 0.8 power factor lagging. The three phase base power and base current are 100 MVA and 437.38 A respectively. The line-to-line load voltage in kV is __________.
4
GATE EE 2014 Set 2
Numerical
+2
-0
A three phase, $$100$$ $$MVA,$$ $$25$$ $$kV$$ generator has solidly grounded neutral. The positive, negative, and the zero sequence reactance's of the generator are $$0.2$$ $$pu$$, $$0.2$$ $$pu$$, and 0.05 $$pu,$$ respectively, at the machine base quantities. If a bolted single phase to ground fault occurs at the terminal of the unloaded generator, the fault current in amperes immediately after the fault is __________
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