1
GATE EE 1999
MCQ (Single Correct Answer)
+2
-0.6
A single phase AC distributor supplies two single phase loads as shown in figure. The voltage drop from A to C is GATE EE 1999 Power System Analysis - Parameters and Performance of Transmission Lines Question 54 English
A
4.5 V
B
31.5 V
C
30 V
D
20 V
2
GATE EE 1999
MCQ (Single Correct Answer)
+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
$$220/\sqrt 3 A.$$
3
GATE EE 1999
MCQ (Single Correct Answer)
+1
-0.3
Steady state stability of a power system is the ability of the power system to
A
Maintain voltage at the rated voltage level.
B
Maintain frequency exactly at 50 Hz.
C
Maintain a spinning reserve margin at all times.
D
Maintain synchronism between machines and on external tie lines.
4
GATE EE 1999
MCQ (Single Correct Answer)
+1
-0.3
An overhead line having a surge impedance of $$400$$$$\Omega $$ is connected in series with an underground cable having a surge impedance of $$100$$$$\Omega $$. If a surge of $$50$$ $$kV$$ travels from the line end towards the cable junctions, the value of the transmitted voltage wave at the junction is
A
$$30$$ kV
B
$$20$$ kV
C
$$80$$ kV
D
$$-30$$ kV