1
GATE EE 1999
+2
-0.6
$$A$$ $$220$$ kV, $$20$$ km long, $$3$$-phase transmission line has the following $$A, B, C, D$$ constants. $$A=D=0.96$$$$\angle {3^0},$$ $$\,B = 55\angle {65^0}\,\,\Omega /$$ phase, $$\,C = 0.5 \times {10^{ - 4}}\angle {90^0}\,\,$$ $$S/$$phase. Its correct charging current per phase is
A
$$11/\sqrt 3 \,\,A$$
B
$$11$$ $$A$$
C
$$220$$ $$A$$
D
$$220/\sqrt 3 A.$$
2
GATE EE 1998
+2
-0.6
A shunt reactor of $$100$$ MVAR is operated at $$98$$% of its rated voltage and $$96$$% of its rated frequency. The reactive power absorbed by the reactor is;
A
$$98$$ MVAR
B
$$104.02$$ MVAR
C
$$96.04$$ MVAR
D
$$100.04$$ MVAR
3
GATE EE 1998
+2
-0.6
A cable has the following characteristics. $$L = 0.201\,\,\mu H/m\,\,$$ and $$\,C = 196.2\,pF/m.\,$$ The velocity of wave propagation through the cable is
A
$$32$$ $$m/s$$
B
$$159.24$$ $$\mu /ms$$
C
$$0.0312$$ $$m/s$$
D
$$159.24$$ $$m$$/($$\mu$$-$$s$$)
4
GATE EE 1996
+2
-0.6
For equilateral spacing of conductors of an untransposed $$3$$-phase line, we have
A
Balanced receiving and voltage and no communication interference.
B
Unbalanced receiving end voltage and no communication interference.
C
Balanced receiving end voltage and communication interference.
D
Unbalanced receiving end voltage and communication interference.
EXAM MAP
Medical
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