# Monthly Archives: February 2017

## GATE 2016 EE (SET 1) Q20

20. The magnitude of three phase fault currents at buses A and B of a power system are $$10pu and 8pu$$, respectively. Neglect all resistances in the system and consider the pre-fault system to be unloaded. The pre-fault voltage at … Continue reading

## GATE 2016 EE (SET 1) Q19

19. In a 100 bus power system, there are 10 generators. In a particular iteration of Newton Raphson load flow technique (in polar coordinates), two of the PV buses are converted to PQ type. In this iteration, Solution: The number … Continue reading

## GATE 2016 EE (SET 1) Q18

18.In the given circuit, the current by the battery, in ampere, is _______ Solution: Applying KCL at node A, $$-I_{1}+I_{2}+I_{2}=0$$ $$2I_{2}=I_{1}\rightarrow 0$$ And applying KVL in loop ABCD, $$1-I_{1}-I_{2}-I_{2}=0$$ $$I_{1}+2I_{2}=1\rightarrow 2$$ From 1 and 2 $$2I_{2}+2I_{2}=1$$ $$4I_{2}=1$$ $$I_{2}=\frac{1}{4}A$$ And$$I_{1}=2\chi \frac{1}{4}=\frac{1}{2}A$$ … Continue reading

## GATE 2016 EE (SET 1) Q11

11.. Consider the following circuit which uses a 2 to 1 multiplexer as shown in the figure below. The Boolean expression for output F in terms of A and B is?  Solution: In the given multiplexer, $$I_0=\bar{A},I_1=A$$ Select$$= B$$ F … Continue reading