1
GATE EE 2007
+2
-0.6
The total reactance and total susceptance of a lossless overhead $$EHV$$ line, operating at $$50$$ $$Hz,$$ are given by $$0.045$$ pu and $$1.2$$ pu respectively. If the velocity of wave propagation is $$3\,\, \times \,\,{10^5}$$ km/s, then the approximate length of line is
A
$$122$$ $$km$$
B
$$172$$ $$km$$
C
$$222$$ $$km$$
D
$$272$$ $$km$$
2
GATE EE 2007
+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. 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
+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
+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
GATE EE Subjects
Electromagnetic Fields
Signals and Systems
Engineering Mathematics
General Aptitude
Power Electronics
Power System Analysis
Analog Electronics
Control Systems
Digital Electronics
Electrical Machines
Electric Circuits
Electrical and Electronics Measurement
EXAM MAP
Joint Entrance Examination