1
GATE EE 2003
MCQ (Single Correct Answer)
+2
-0.6
The ABCD parameters of a $$3$$-phase overhead transmission line are $$\,A = D = 0.9\angle {0^ \circ }.\,\,B = 200\,\angle {90^ \circ }\,\,\Omega \,\,\,$$ and $$\,\,C = 0.95\, \times \,\,{10^{ - 3}}\angle {90^ \circ }\,\,S.\,\,\,\,$$ At no-load condition, a shunt inductive reactor is connected at the receiving end of the line to limit the receiving end voltage to be equal to the sending-end voltage. The ohmic value of the reactor is
A
$$\infty \Omega $$
B
$$2000\,\Omega $$
C
$$105.26\,\Omega $$
D
$$1052.6\,\Omega $$
2
GATE EE 2003
MCQ (Single Correct Answer)
+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
$$39.4$$
3
GATE EE 2003
MCQ (Single Correct Answer)
+1
-0.3
Bundled conductors are mainly used in high voltage overhead transmission lines to
A
Reduce transmission line losses
B
Increase mechanical strength of the line
C
Reduce corona
D
Reduce sag
4
GATE EE 2003
MCQ (Single Correct Answer)
+1
-0.3
A round rotor generator with internal voltage $${E_1} = 2.0\,\,$$ p.u.and $$\,X = 1.1\,\,$$ p.u. is connected to a round rotor synchronous motor with internal voltage $$\,\,{E_2} = 1.3\,\,$$ p.u. and $$\,X = 1.2\,\,$$ p.u. The reactance of the line connecting the generator to the motor is $$0.5$$ p.u. when the generator supplies $$0.5$$ p.u. power, the rotor angle difference between the machines will be
A
$${57.42^ \circ }$$
B
$${1^ \circ }$$
C
$${32.58^ \circ }$$
D
$${122.58^ \circ }$$