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Electrical Engineering
Branch, Loop And Node Analyses
Quiz 3
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Q.1
The first row of a certain determinant has the numbersandThe second row has the numbers 3 andThe value of this determinant is
18
50
32
–32
Q.2
Find I4I1 + 4I2 = 2 6I1 + 7I2 = 4
0.5 A
50 mA
–0.5 A
–50 mA
Q.3
Find I4I1 + 4I2 = 2 6I1 + 7I2 = 4
1 A
–1 A
100 mA
–100 mA
Q.4
The mesh current method is based on Kirchhoff's current law.
True
False
Q.5
The expansion method for evaluating determinants is
Better than any other method
Good for only one determinant
More flexible than the cofactor method
Good for second- and third-order determinants
Q.6
Third-order determinants are evaluated by the expansion method or by the cofactor method.
True
False
Q.7
Generally, the mesh current method results in fewer equations than the node voltage method.
True
False
Q.8
The branch current method is based on Kirchhoff's voltage law and Kirchhoff's current law.
True
False
Q.9
When assigning branch currents, you need not be concerned with the direction you choose.
True
False
Q.10
Using the mesh current method, find the branch current, IRin the above figure.
115 mA
12.5 mA
12.5 A
135 mA
Q.11
The node voltage method is based on Kirchhoff's voltage law.
True
False
Q.12
Second-order determinants are evaluated by subtracting the signed cross-products.
True
False
Q.13
What is the current through R2?
3.19 A
319 mA
1.73 A
173 mA
Q.14
A loop current is an actual current in a branch.
True
False
Q.15
The mesh method can be applied to circuits with any number of loops.
True
False
Q.16
Find branch current IR2.
5.4 mA
-5.4 mA
113.0 mA
119.6 mA
Q.17
What is the voltage drop across R1?
850 mV
7.82 V
9.18 V
918 mV
Q.18
The first row of a certain determinant has the numbers 3 andThe second row has the numbers 7 andThe value of this determinant is
31
-31
39
-29
Q.19
In assigning the direction of branch currents.
The directions are critical
The directions are not critical
They must point into a node
They must point out of a node
Q.20
The branch current method uses.
Kirchhoff's voltage and current laws
Thevenin's theorem and Ohm's law
Kirchhoff's current law and Ohm's law
The superposition theorem and Thevenin's theorem
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