NTA UGC NET/JRF Exam, June-2019 (Electronic Science)

Total Questions: 100

11. In the figure below, impedance value of load Zʟ which will cause maximum power to be transferred to the load is:

Correct Answer: C. 2Ω

12. For a two-port network A = x₁, B = x₂, C = 1/x₂. For the network to be reciprocal, D is equal to:

Correct Answer: C.

13. By applying principle of superposition to the circuit:

voltage V across resistance R is:

Correct Answer: D. 1 V

14. Incidence matrix of a graph is given below:

Number of possible trees are:

Correct Answer: B. 11

15. Which of the following is hybrid parameter h₂₂ of a two-port network?

Correct Answer: A.

16. In case of a monolithic phase-locked looр, the equation of free running frequency of the voltage controlled oscillator is:

Correct Answer: D.

17. The purpose of using a Bleeder resistor across the filter, when designing a d.c. power supply is:

Correct Answer: D. both to improve regulation of supply and to provide safety to the person handling the equipment

18. In which of the following configurations, Miller effect capacitance is not a contributing concern for high-frequency applications?

Correct Answer: D. Both common base and emitter follower configurations

19. Which of the following parameters correctly describes a good current buffer?

Correct Answer: C. Low input impedance and high output impedance

20. Which of the following components are used for bias compensation in transistor circuits?

Correct Answer: C. Both thermistors and rectifying diodes