1
GATE EE 2004
MCQ (Single Correct Answer)
+2
-0.6
A 3-phase transmission line supplies $$\Delta - $$ connected load Z. The conductor $$'c'$$ of the line develops an open circuit fault as shown in figure. The currents in the lines are as shown on the diagram. The +ve sequence current component in line 'a' will be
2
GATE EE 2003
MCQ (Single Correct Answer)
+2
-0.6
A 20-MVA, 6.6-kV, 3-phase alternator is connected to a 3-phase transmission line. The per unit positive sequence, negative sequence and zero sequence impedance of the alternator are j0.1, and j0.04 respectively. The neutral of the alternator is connected to ground through an inductive reactor of j0.05 p.u. The per unit positive, negative and zero sequence impedances of the transmission line are j0.1 and j0.3 respectively. All per unit values are based on the machine ratings. A solid ground fault occurs at one phase of the far end of the transmission line. The voltage of the alternator neutral with respect to ground
during the fault is
3
GATE EE 2003
MCQ (Single Correct Answer)
+2
-0.6
A three-phase alternator generating unbalanced voltages is connected to an unbalanced load through a 3-phase transmission line as shown in figure. The neutral of the alternator and the star point of the load are solidly grounded. The phase voltages of the alternator are
$${E_a} = 10\angle {0^ \circ }V,\,\,\,{E_b} = 10\angle - {90^ \circ }V,\,\,{E_c} = 10\angle {120^ \circ }\,\,V.\,\,\,\,$$ The positive sequence component of the load current is
$${E_a} = 10\angle {0^ \circ }V,\,\,\,{E_b} = 10\angle - {90^ \circ }V,\,\,{E_c} = 10\angle {120^ \circ }\,\,V.\,\,\,\,$$ The positive sequence component of the load current is
4
GATE EE 2002
MCQ (Single Correct Answer)
+2
-0.6
A generator is connected to a transformer which feeds another transformer through a short feeder. The zero sequence impedance values are expressed in pu on a common base and are indicated in figure. The Thevenin equivalent zero sequence impedance at point B is
Questions Asked from Symmetrical Components and Symmetrical and Unsymmetrical Faults (Marks 2)
Number in Brackets after Paper Indicates No. of Questions
GATE EE 2023 (1)
GATE EE 2018 (1)
GATE EE 2017 Set 1 (1)
GATE EE 2016 Set 1 (1)
GATE EE 2015 Set 1 (1)
GATE EE 2014 Set 2 (1)
GATE EE 2014 Set 1 (1)
GATE EE 2010 (1)
GATE EE 2008 (3)
GATE EE 2007 (1)
GATE EE 2006 (1)
GATE EE 2005 (3)
GATE EE 2004 (3)
GATE EE 2003 (2)
GATE EE 2002 (1)
GATE EE 2001 (1)
GATE EE 2000 (1)
GATE EE 1998 (1)
GATE EE Subjects
Electric Circuits
Electromagnetic Fields
Signals and Systems
Electrical Machines
Engineering Mathematics
General Aptitude
Power System Analysis
Electrical and Electronics Measurement
Analog Electronics
Control Systems
Power Electronics