GATE EE 2014 Question Paper (02-Mar-2014) (Shift 2)

A 183 – bus power system has 150 PQ buses and 32 PV buses. In the general case, to obtain the load flow solution using Newton – Raphson method in polar coordinates, the minimum number of simultaneous equations to be solved is_________.

The signal flow graph of a system is shown below. U(s) is the input and C(s) is the output.



Assuming, h₁ = b₁ and h₀ = b₀ – b₁a₁, the input-output transfer function, $G\left(s\right)=\frac{C\left(s\right)}{R\left(s\right)}$ of the system is given by

A single-input single-output feedback system has forward transfer function G(s) and feedback transfer function H(s). It is given that |G(s)H(s)| < 1. Which of the following is true about the stability of the system?

An LPF wattmeter of power factor 0.2 is having three voltage settings 300 V, 150 V, 75 V and two current setting 5 A and 10 A. The full scale reading of the wattmeter is 150 W. If the wattmeter is used with 150 V voltage setting and 10 A current setting, the multiplying factor of the wattmeter is -

The two signals S1 and S2, shown in figure, are applied to Y and X deflection plates of an oscilloscope.





The waveform displayed on the screen is