GATE EE 2014 Question Paper (02-Mar-2014) (Shift 1)

Assuming an ideal transformer, The Thevenin’s equivalent voltage and impedance as seen from the terminals x and y for the circuit in the figure are

A single phase, 50 kVA, 1000V/100 V two winding transformer is connected as an autotransformer as shown in the figure.



The kVA rating of the autotransformer is _______

A three-phase, 4-pole, self excited induction generator is feeding power to a load at a frequency f ₁. If the load is partially removed, the frequency becomes f ₂. If the speed of the generator is maintained at 1500 rpm in both the cases, then

A single phase induction motor draws 12 MW power at 0.6 lagging power. A capacitor is connected in parallel to the motor to improve the power factor of the combination of motor and capacitor to 0.8 lagging. Assuming that the real and reactive power drawn by the motor remains same as before, the reactive power delivered by the capacitor in MVAR is _______

A three phase star-connected load is drawing power at a voltage of 0.9 pu and 0.8 power factor lagging. The three phase base power and base current are 100 MVA and 437.38 A respectively. The line-to-line load voltage in kV is _______