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

For the system 2/ (s+1), the approximate time taken for a step response to reach 98% of the final value is

For the power system shown in the figure below, the specifications of the components are the following:

G1:25 kV, 100 MVA, X = 9%

G2:25 kV, 100 MVA, X = 9%

T1: 25 kV/220 kV, 90 MVA, X = 12%

T2: 220 kV/25 kV, 90 MVA, X = 12%

Line1:220 kV, X = 150 ohms



Choose 25 kV as the base voltage at the generator G1, and 200 MVA as the MVA base. The impedance diagram is

A single-phase transformer has a turns ratio of 1 : 2 and is connected to a purely resistive load as shown in the figure. The magnetizing current as well as the load current drawn is 1 A. if the core losses and leakage reactance’s are neglected, the primary current should be

Power is transferred from system A to system B by an HVDC link as shown in the figure. If the voltage V${}_{AB}$ and V${}_{CD}$ are as indicated in the figure, and I > 0, then

Consider a three-phase. 50 Hz, 11 kV distribution system, Each of the conductors is suspended by an insulator string having two identical porcelain insulators. The self-capacitance of the insulator is 5 times the shunt capacitance between the link and the ground, as shown in the figure. The voltage across the two insulators are