Network Theory Practice Test 2

1. A circuit is given in the figure below. We can infer that ________

The circuit follows Tellegen Theorem

The circuit follows Superposition Theorem

The circuit follows Reciprocity Theorem

The circuit follows Millman’s Theorem

2. According to Millman’s Theorem, if there are n current sources with n internal conductances respectively, are in series, then the value of equivalent current source is?

I’=I₁R₁+I₂R₂+⋯.+I_nR_n

I^'=((I₁R₁+I₂R₂+⋯.+I_nR_n))/(R₁+R₂+⋯R_n)

I’=I₁/R₁+I₂/R₂+⋯.+I_n/R_n

I’=((I₁/R₁+I₂/R₂+⋯.+I_n/R_n))/(R₁+R₂+⋯R_n)

3. Find the equivalent resistance between terminals A and B in the following circuit.

3.03

3.63

3.33

4. According to Millman’s Theorem, if there are n voltage sources with n internal resistances respectively, are in parallel, then the value of equivalent voltage source is?

V^'=((V₁G₁+V₂G₂+⋯.+V_nG_n))/(G₁+G₂+⋯G_n)

V^'=(V₁G₁+V₂G₂+⋯.+V_nG_n)

V^'=((V₁G₁+V₂G₂+⋯.+V_nG_n))/((1/G₁+1/G₂+⋯1/G_n))

V^'=((V₁/G₁+V₂/G₂+⋯.+V_n/G_n))/( G₁+G₂+⋯G_n)

5. Consider an electric motor having resistance of 10 Ω, 20 Ω and 30 Ω respectively. The percentage of energy dissipated by 10 Ω earthing plate is ____________

May be more or less than 50% of total energy

Less than 50% of total energy

More than 50% of total energy

Depends on the materials of the three plates

6. Determine the equivalent thevenin’s voltage between terminals ‘a’ and ‘b’ in the circuit shown below.

2.7

1.7

0.7

3.7

7. For the circuit given below, the Thevenin resistance across the terminals A and B is _____________

1.5 kΩ

7 kΩ

5 Ω

1.1 kΩ

8. The dual pair of capacitance is?

current source

inductance

capacitance

resistance

9. A circuit is given in the figure below. We can infer that ________

The circuit follows Superposition Theorem

The circuit follows Millman’s Theorem

The circuit follows Reciprocity Theorem

The circuit follows Tellegen Theorem

10. Find the current through 5Ω resistor in the following circuit.

0.3

0.2

0.4

0.1