1
GATE EE 2013
+1
-0.3
Consider a delta connection of resistors and it's equivalent star connection as shown below. If all elements of the delta connection are scaled by a factor k, k>0, the elements of the corresponding star equivalent will be scaled by a factor of
A
$$k^2$$
B
k
C
1/k
D
$$\sqrt k$$
2
GATE EE 2013
+2
-0.6
Three capacitors C1, C2 and C3 whose values are 10μF, 5μF and 2μF respectively, have breakdown voltages of 10V, 5V and 2V respectively. For the interconnection shown, the maximum safe voltage in Volts that can be applied across the combination and the corresponding total charge in μC stored in the effective capacitance across the terminals are respectively
A
2.8 and 36
B
7 and 119
C
2.8 and 32
D
7 and 80
3
GATE EE 2013
+1
-0.3
A source $$v_s\left(t\right)=V\cos100\mathrm{πt}$$ has an internal impedance of (4 + j3) Ω.If a purely resistive load connected to this source has to extract the maximum power out of the source, its value in Ω should be
A
3
B
4
C
5
D
7
4
GATE EE 2013
+2
-0.6
In the circuit shown below, if the source voltage $$V_s=100\angle53.12^\circ\;V$$ then the Thevenin’s equivalent voltage in Volts as seen by the load resistance RL is
A
$$100\angle90^\circ$$
B
$$800\angle0^\circ$$
C
$$800\angle90^\circ$$
D
$$100\angle60^\circ$$
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