GATE EE 2010 Question Paper (14-Feb-2010) (Shift 1)

Consider a step voltage of magnitude 1 pu travelling along a lossless transmission line that terminates in a reactor. The voltage magnitude across the reactor at the instant travelling wave reaches is

consider two buses connected by an impedance of (0 + 5j) Ω. The bus ‘1’ voltage is 100 ∠30° V, and bus ‘2’ voltage is 100 ∠0° V. The real and reactive power supplied by bus ‘1’ respectively are

A three-phase, 33 kV oil circuit breaker is rated 1200 A, 2000 MVA, 3 s. The symmetrical breaking current is

Consider a stator winding of an alternator with an internal high – resistance ground fault. The currents under the fault condition are as shown in the figure. The winding is protected using a differential current scheme with current transformers of ratio 400 / 5 A as shown. The current through the operating coils is

The zero-sequence circuit of the three-phase transformer shown in the figure is (consider that the star is solidly grounded