GATE 2024 Power Systems Foundation Quiz 36

The combined frequency regulation of machines in area of capacity 1000 MW and operating at a normal frequency of 50 Hz is 5%. The regulation in Hz/MW will be

A lossy capacitor C_x, rated for operation of 5 kV, 50 Hz is represented by an equivalent circuit with an ideal capacitor C_p in parallel with a resistor R_p . C_p is 0.102 μF; and R_p = 1.25 MΩ. The power loss, and tan δ, of this lossy capacitor when operating at the rated voltage are, respectively

A single phase 50 Hz, system supplies an inductive load of 5000 kw at power factor 0.8 lag through a line 25 km. Resistance of the line is 0.0195 Ω/km and inductance = 0.36 mH/km, receiving end voltage is 10 kV. A capacitor is connected across the load to get the voltage regulation of 10%. Ratio of transmission line loss with and without shunt capacitor is _______.

A 40 MVA, 11 kV, 3-phase, 50 Hz, 4-pole turboalternator has an inertia constant of 15 sec. An input of 20 MW developed 15 MW of output power (Neglecting losses). Then the acceleration is

When bundle of conductors are used in place of single conductors the effective inductance and capacitance will, respectively