Q3.Power is transferred from system A to system B by an HVDC link as shown in the figure. If the
voltages VAB and VCD are as indicated in the figure, and I > 0, then
Answer : Option CExplaination / Solution: No Explaination.
Consider a step voltage wave of magnitude 1pu travelling along a lossless transmission line that terminates in a reactor. The voltage magnitude across the reactor at the instant the travelling wave reaches the reactor is
Answer : Option BExplaination / Solution: No Explaination.
Q5.Consider two buses connected by an impedance of (0+j5) Ω. The bus1 voltage is 100∠300 V,
and bus2 voltage is 100∠00V. The real and reactive power supplied by bus 1, respectively, are
Answer : Option AExplaination / Solution: No Explaination.
A 50Hz synchronous generator is initially connected to a long lossless transmission line which is open circuited at the receiving end. With the field voltage held constant, the generator is disconnected from the transmission line. Which of the following may be said about the steady state terminal voltage and field current of the generator?
Answer : Option AExplaination / Solution: No Explaination.
A balanced star-connected and purely resistive load is connected at the secondary of a stardelta transformer as shown in figure. The line-to-line voltage rating of the transformer is 110V/220V. Neglecting the non-idealities of the transformer, the impedance ‘Z’ of the equivalent star-connected load, referred to the primary side o the transformer, is:
Answer : Option DExplaination / Solution: No Explaination.
Consider a three-phase, 50Hz, 11kV distribution system. Each of the conductors is suspended by an insulator string having two identical porcelain insulators. The self-capacitance of the insulator is 5 times the shunt capacitance between the link and the ground, as shown in the figure. The voltage across the two insulators are
Answer : Option BExplaination / Solution: No Explaination.
Total Question/Mark :
Scored Mark :
Mark for Correct Answer : 1
Mark for Wrong Answer : -0.5
Mark for Left Answer : 0