UP polytechnic Lecturer (EE) Quiz 5

The incremental cost-curve characteristics of two generators delivering a total load of 200 MW are as follows:

What should the value of P₁ and P₂ for economic operation?

In a power system, maximum number of buses are

The bus admittance matrix of a power system is given by:

The impedance of line between bus 1 and 3 will be equal to

If Z₁, Z₂, Z₀ are positive, negative and zero sequence impedances of a fully transposed transmission line, then

If the capacity is doubled and voltage are tripled, then percentage change in p.u. reactance is?

When there is a change in load in a power station having several generator units operating in parallel, the system frequency is controlled by

The identical synchronous machines A and B running at the same speed, linked through an inductor is shown in the figure below:

Machine A will supply active and reactive power to machine B, when is

For the circuit shown in figure below, SLG fault occurs at bus. Per-unit fault current is _________. (Take X_1eq = X_2eq = 0.15 p.u., X_0eq = 0.05 p.u.)