Q.21 For the network shown in the figure below, the frequency (in rad/s) at which the maximum phase lag occurs is, ___________.
Q.22 The direction of rotation of a single-phase capacitor run induction motor is reversed by
(A) interchanging the terminals of the AC supply.
(B) interchanging the terminals of the capacitor.
(C) interchanging the terminals of the auxiliary winding.
(D) interchanging the terminals of both the windings.
Answer: (B) interchanging the terminals of the capacitor.
Q.23 In the circuit shown below, the voltage and current sources are ideal. The voltage (Vout) across the current source, in volts, is
Q.24 The graph associated with an electrical network has 7 branches and 5 nodes. The number of independent KCL equations and the number of independent KVL equations, respectively, are
(A) 2 and 5
(B) 5 and 2
(C) 3 and 4
(D) 4 and 3
Answer: (D) 4 and 3
Q.25 Two electrodes, whose cross-sectional view is shown in the figure below, are at the same potential. The maximum electric field will be at the point
Answer: (C) C
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