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Achiever Study Plan ESE-2018: Electrical Circuits Quiz 5
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Question 1
The graph below shows certain specific notation. Study the notation and identify the type of graph.
Question 2
The matrix A given below is the node incidence matrix of a network. The columns correspond to branches of the network while the rows correspond to nodes. Let 
denote the vector of branch voltages while 
that of branch currents. The vector 
denotes the vector of node voltages relative to a common ground.
Which of the following statements is true?
denote the vector of branch voltages while that of branch currents. The vector denotes the vector of node voltages relative to a common ground. Which of the following statements is true?
Question 3
If a vertex v is cut vertex of connected graph G when there exist two vertices u and w in graph G, then which among the option is incorrect.
Question 4
Find the Norton’s equivalent current source In and equivalent parallel resistance Rn across terminals a and b?
Question 5
A star connected 400 V, 50 Hz, 4 pole synchronous machines gave the following open circuit andshort circuit test results:
Open circuit test: Voc = 400 V (rms, line-to-line) at field current, If = 2.3 A
Short circuit test: Isc = 10 A (rms, phase) at field current, If = 1.5 A
The value of per phase synchronous impedance in Ohm. at rated voltage is_______.
Open circuit test: Voc = 400 V (rms, line-to-line) at field current, If = 2.3 A
Short circuit test: Isc = 10 A (rms, phase) at field current, If = 1.5 A
The value of per phase synchronous impedance in Ohm. at rated voltage is_______.
Question 6
Two batteries of emf 20 V and 10 V having internal resistances of 3 Ω and 1 Ω respectively are connected in parallel across a load resistance. If the voltage across the load is 11 V, determine the load resistance in ohm?
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Jul 26ESE & GATE EE
