Network Theorems

41. The superposition theorem is applicable to

1. linear, non-linear and time variant responses
2. linear and non-linear resistors only
3. linear responses only
4. none of the above

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42. The superposition theorem requires as many circuits to be solved as there are

1. sources, nodes and meshes
2. sources and nodes
3. sources
4. nodes

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43. Thevenin resistance Rth is found

1. by removing voltage sources along with their internal resistances
2. by short-circuiting the given two terminals
3. between any two ‘open' terminals
4. between same open terminals as for Etk

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44. To determine the polarity of the voltage drop across a resistor, it is necessary to know

1. value of current through the resistor
2. direction of current through the resistor
3. value of resistor
4. e.m.fs. in the circuit

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45. Which of the following is a bilateral element ?

1. Constant current source
2. Constant voltage source
3. Capacitance
4. None of the above

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46. Which of the following is non-linear circuit parameter ?

1. Inductance
2. Condenser
3. Wire wound resistor
4. Transistor

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47. Which of the following is the passive element ?

1. Capacitance
2. Ideal current source
3. Ideal voltage source
4. All of the above

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48. While calculating Rth in Thevenin's theorem and Norton equivalent

1. all independent sources are made dead
2. only current sources are made dead
3. only voltage sources are made dead
4. all voltage and current sources are made dead

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