1
GATE EE 2015 Set 2
+2
-0.6
In the given network $$V_1=100\angle0^\circ V$$, $$V_2=100\angle-120^\circ V$$, $$V_3=100\angle+120^\circ V$$. The phasor current i (in Ampere) is
A
$$173.2\angle-60^\circ$$
B
$$173.2\angle120^\circ$$
C
$$100.0\angle-60^\circ$$
D
$$100.0\angle120^\circ$$
2
GATE EE 2015 Set 2
Numerical
+2
-0
Two identical coils each having inductance L are placed together on the same core. If an overall inductance of $$\alpha$$L is obtained by interconnecting these two coils, the minimum value of $$\alpha$$ is ________.
3
GATE EE 2015 Set 2
Numerical
+2
-0
A symmetrical square wave of 50% duty cycle has amplitude of ±15V and time period of 0.4$$\mathrm\pi$$ ms. This square wave is applied across a series RLC circuit with R = 5Ω, L = 10 mH, and C = 4μF. The amplitude of the 5000 rad/s component of the capacitor voltage (in Volt) is __________.
4
GATE EE 2014 Set 3
+2
-0.6
A series RLC circuit is observed at two frequencies. At $$\omega_1$$ = 1k rad / s, we note that source voltage $$V_1=100\angle0^\circ V$$ results in a current $$I_1=0.03\angle31^\circ\;A$$. At $$\omega_2$$ = 2 k rad/s, the source voltage $$V_2=100\angle0^\circ\;V$$ results in a current $$I_2=2\angle0^\circ\;A$$. The closest values for R,L,C out of the following options are
A
R = 50W;L = 25mH;C =10μF;
B
R = 50W;L =10mH;C = 25μF;
C
R = 50W;L = 50mH;C = 5μF;
D
R = 50W;L = 5mH;C = 50μF;
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