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.Management Sciences
Category: Network Theorems
While calculating Rth in Thevenin’s theorem and Norton equivalent
A. all independent sources are made dead
B. only current sources are made dead
C. only voltage sources are made dead
D. all voltage and current sources are made dead
Kirchhoffs current law is applicable to only
A. junction in a network
B. closed loops in a network
C. electric circuits
D. electronic circuits
Kirchhoff s current law states that
A. net current flow at the junction is positive
B. Hebraic sum of the currents meeting at the junction is zero
C. no current can leave the junction without some current entering it.
D. total sum of currents meeting at the junction is zero
Kirchhoff s law is not applicable to circuits with____________?
A. lumped parameters
B. passive elements
C. distributed parameters
D. non-linear resistances
According to Kirchhoffs voltage law, the algebraic sum of all IR drops and e.m.fs. in any closed loop of a network is always____________?
A. negative
B. positive
C. determined by battery e.m.fs.
D. zero
If resistance across LM in Fig. 2.30 is 15 ohms, the value of R is____________?
A. 10 Q
B. 20 Q
C. 30 Q
D. 40 Q
“Any number of current sources in parallel may be replaced by a single current source whose current is the algebraic sum of individual source currents and source resistance is the parallel combination of individual source resistances”. This statement is associated with:
A. Thevenin’s theorem
B. Millman’s theorem
C. Maximum power transfer theorem
D. None of the above
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