Electronic Engineering MCQ Question Papers: ENTC, IT Interview Placement

Subject: Network Theory 2

**Part 2: List for questions and answers of Network Theory**

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**Q1. Which type of attenuators provides a fixed amount of attenuation by allowing the user ****to vary the attenuation in multiple steps?**

**a) Ladder attenuators**

**b) Variable-value attenuators**

**c) Pad attenuators**

**d) All of the above**

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**Q2. Consider the assertions given below. Which of them is not a disadvantage of Laplace ****Transform?**

**a) Unsuitability for data processing in random vibrations**

**b) Analysis of discontinuous inputs**

**c) Possibility of conversion s = jω is only for sinusoidal steady state analysis**

**d) Inability to exist for few Probability Distribution Functions**

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**Q3. How does the ‘σ’ of complex frequency variable appear in time domain?**

**a) As a linear power**

**b) As a reactive power**

**c) As an exponential power**

**d) As an iterative power**

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**Q4. Transfer admittance function is the ratio of Laplace transforms of ________**

**a) Current at one port to voltage at other port**

**b) Voltage at one port to current at other port**

**c) Current at one port to current at other port**

**d) Voltage at one point to voltage at other port**

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**Q5. When a network function is expressed as a ratio of Laplace transforms of output to ****input variables of a system, then it is regarded as _______**

**a) System function**

**b) Transfer function**

**c) Both a and b**

**d) None of the above**

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**Q6. What does the connectivity of energy source at the port of network known as?**

**a) Driving Point**

**b) Transfer Point**

**c) Both a and b**

**d) None of the above **

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**Q7. What is the potential value of a reference or datum node used in the node analysis of a ****network?**

**a) Zero**

**b) Unity**

**c) Greater than zero but less than infinity**

**d) Unpredictable**

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**Q8. What will be the value of equivalent single source, if the two voltage sources connected ****in series combination possess equal or similar polarity?**

**a) Addition of two sources with polarities similar to that of two sources**

**b) Addition of two sources with opposite polarity**

**c) Difference between the two sources with polarities similar to that of two sources**

**d) Difference between the two sources with polarities similar to that of greater among**

**the two sources**

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**Q9. Which among the following is also regarded as ‘Dual of Thevenin’s Theorem’?**

**a) Norton’s Theorem**

**b) Superposition Theorem**

**c) Millman’s Theorem**

**d) Maximum Power Transfer Theorem**

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**Q10. How many fundamental cutsets will be generated for a graph with ‘n’ number of ****nodes?**

**a) n+1**

**b) n-1**

**c) n2(n-1)**

**d) n/ n-1**

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**Q11. Which parameter should be essentially equal to the number of nodes in the network in ****accordance to the principle of duality?**

**a) Total impedance**

**b) Total admittance**

**c) Number of meshes**

**d) Number of voltage sources**

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**Q12. Consider the assertions given below. Which among them do/does not specify/ies the ****property of ‘Complete Incidence Matrix’?**

**a) Determinant of a loop of a complete incidence matrix is always zero**

**b) Addition of all entries in any column should never be equal to zero**

**c) Rank of connected or oriented graph is always ‘n-1’**

**d) All of the above **

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**Q13. Which type of network response exhibits its behaviour by taking into consideration the ****effect of time associated with it?**

**a) Zero input response**

**b) Zero state response**

**c) Both a and b**

**d) None of the above**

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**Q14. How does the series resonant circuit behave under the resonance condition?**

**a) Current amplifier**

**b) Transconductance**

**c) Voltage regulator**

**d) Voltage amplifier**

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**Q15. If an a.c. signal generator drives a series RLC circuit, then the circuit undergoes ****resonance only due to variation in __________**

**a) Supply voltage**

**b) Series resistance**

**c) Supply frequency**

**d) Phase angle**

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**Q16. The current leads supply voltage if a series resonant circuit exhibits its ****operation__________ the resonant frequency**

**a) Above**

**b) Below**

**c) Equal to**

**d) None of the above**

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**Q17. What would be the value of impedance of a parallel resonant circuit at antiresonance ****condition?**

**a) Resistive & maximum**

**b) Resistive & minimum**

**c) Reactive & maximum**

**d) Reactive & minimum**

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**Q18. If a network comprises purely resistive elements, what will it provide from the ****following?**

**a) Attenuation**

**b) Phase Shift**

**c) Both a and b**

**d) None of the above **

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**Q19. In band elimination filter, the frequency of resonance of individual arms is geometric ****_________**

**a) Mean of two cut-off frequencies**

**b) Difference of two cut-off frequencies**

**c) Product of two cut-off frequencies**

**d) Division of two cut-off frequencies**

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**Q20. Why are the variable attenuators applicable for radio broadcasting purposes?**

**a) For speed control**

**b) For volume control**

**c) For time control**

**d) For power control **

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**Part 2: List for questions and answers of Network Theory**

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**Q1. Answer: a**

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**Q2. Answer: b**

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**Q3. Answer: c**

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**Q4. Answer: a**

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**Q5. Answer: c**

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**Q6. Answer: a**

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**Q7. Answer: a**

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**Q8. Answer:**

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**Q9. Answer: a**

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**Q10. Answer: b**

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**Q11. Answer: c**

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**Q12. Answer: b**

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**Q13. Answer: b**

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**Q14. Answer: d**

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**Q15. Answer: c**

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**Q16. Answer: b**

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**Q17. Answer: a**

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**Q18. Answer: a**

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**Q19. Answer: a**

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**Q20. Answer: b**