GATE EE 2015 Question Paper (07-Feb-2015) (Shift 1)

Consider a HVDC link which uses thyristor based line commutated converters as shown in the figure. For a power flow of 750 MW from system 1 to system 2, the voltages at the two ends, and the current, are given by: V₁ = 500 kV, V₂ = 485 kV and I = 1.5 kA. If the direction of power flow is to be reversed (that is, from system 2 to system 1) without changing the electrical connections, then which one of the following combinations is feasible?

Base load power plants are

P. wind farms

Q. run – of – river plants

R. nuclear power plants

S. diesel power plants

The voltages developed across the 3 Ω and 2 Ω resistors shown in the figure are 6 V and 2 V respectively, with the polarity as marked. What is the power (in Watt) delivered by the 5 𝑉 voltage source?

For the given circuit the thenvenin equivalent is to be determined. The Thevenin voltage, V${}_{TH}$ (in volt), seen from terminal AB is _________.

An inductor is connected in parallel with a capacitor as shown in the figure.



As the frequency of current i is increased, the impedance (Z) of the network varies as