1
GATE EE 2000
+2
-0.6
The impedance seen by the source in the circuit in Fig. is given by
A
$$\left( {0.54 + j0.313} \right)\,ohms$$
B
$$\left( {4 - j2} \right)\,ohms$$
C
$$\left( {4.54 - j1.69} \right)\,ohms$$
D
$$\left( {4 + j2} \right)\,ohms$$
2
GATE EE 2000
+2
-0.6
If an $$ac$$ voltage wave is corrupted with an arbitrary number of harmonics, then the overall voltage waveform differs from its fundamental frequency component in terms of
A
only the peak values
B
only the $$rms$$ values
C
only the average values
D
all the three measures (peak, $$rms$$ and average values)
3
GATE EE 2000
+2
-0.6
A two-port device is defined by the following pair of equations:
$${i_1} = 2{v_1} + {v_2}$$ and $${i_2} = {v_1} + {v_2}$$
Its impedance parameters $$\left( {{z_{11}},\,\,{z_{12}},\,\,{z_{21}},\,\,{z_{22}}} \right)$$ are given by
A
$$\left( {2,\,\,1,\,\,1,\,\,1} \right)$$
B
$$\left( {1,\,\, - 1,\,\, - 1,\,\,2} \right)$$
C
$$\left( {1,\,\,1,\,\,1,\,\,2} \right)$$
D
$$\left( {2,\,\, - 1,\,\, - 1,\,\,1} \right)$$
4
GATE EE 2000
+2
-0.6
The two wattmeter method is used to measure active power on a three phase, three wire system. If the phase voltage is unbalanced, then the power reading is
A
affected by both negative sequence and zero sequence voltages
B
affected by negative sequence voltages but not by zero sequence voltages
C
affected by zero sequence voltages but not by negative sequence voltages
D
not affected by negative or zero sequence voltages
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