Network Theorems Objective Questions and Answers - ObjectiveBooks

# Practice Test: Question Set - 04

1. The superposition theorem is applicable to
(A) Voltage only
(B) Current only
(C) Both current and voltage
(D) Current, voltage and power

2. Superposition theorem can be applied only to circuits having
(A) Resistive elements
(B) Passive elements
(C) Nonlinear elements
(D) Linear bilateral elements

3. For a voltage source
(A) Terminal voltage is always lower than source e.m.f.
(B) Terminal voltage cannot be higher than source e.m.f.
(C) The source e.m.f. and terminal voltage are equal
(D) None of these

4. “Any number of current sources in parallel may be replaced by a single current source whose current is the algebraic sum of individual currents and source resistance is the parallel combination of individual source resistances”.
The above statement is associated with
(A) Thevenin’s theorem
(B) Millman’s theorem
(C) Maximum power transfer theorem
(D) None of the above

5. For high efficiency of transfer of power, internal resistance of the source should be
(A) Equal to the load resistance
(B) Less than the load resistance
(C) More than the load resistance
(D) None of the above

6. For maximum transfer of power, internal resistance of the source should be
(B) Less than the load resistance
(C) Greater than the load resistance
(D) None of the above

7. In a series parallel circuit, any two resistances in the same current path must be in
(A) Series with each other
(B) Parallel with each other
(C) Series with the voltage source
(D) Parallel with the voltage source

8. Application of Norton’s theorem to a circuit yields
(A) Equivalent current source and impedance in series
(B) Equivalent current source and impedance in parallel
(C) Equivalent impedance
(D) Equivalent current source

9. In Thevenin’s theorem, to find Z
(A) All independent current sources are short circuited and independent voltage sources are open circuited
(B) All independent voltage sources are open circuited and all independent current sources are short circuited
(C) All independent voltage and current sources are short circuited
(D) All independent voltage sources are short circuited and all independent current sources are open circuited

10. Choose the incorrect statement.
(A) A branch formed by the parallel connection of any resistor R and open circuit has the characteristic of an open circuit
(B) A branch formed by the parallel connection of any resistor R and a short circuit has the characteristic of a short circuit
(C) A branch formed by the series connection of any resistor R and an open circuit has the characteristic of an open circuit
(D) A branch formed by the series connection of any resistor R and a short circuit has the characteristic of resistor R

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