📣 Paper 3 has been removed from NET from 2018 (Notification)- now paper 2 and 3 syllabus is included in paper 2. Practice both paper 2 and 3 from past papers.

NTA NET Electronic Science December 2014 Questions and Answers Part 2

Online Paper 1 complete video lectures with Dr. Manishika Jain. Join now!

Q-8. In FM

(1) Carrier never becomes zero

(2) J-coefficient occasionally are negative

(3) Total power remains constant with respect to modulation index

(4) Pulse rate decreases

Answer: 1

Q-9. In thyristor di/dt failure is prevented by

(1) Putting L in series with anode

(2) Putting R in series with anode

(3) Putting C in series with anode

(4) Putting RC in series with anode

Answer: 1

Q-10. The driving point impedance Z (s) of a network has pole – zero plot as shown, if , then ?

The Driving Point Impedance Z (S) of a Network Has Pole – Zer …

(1)

(2)

(3)

(4)

Answer: 2

Q-11. The C. E. configuration is normally preferred because it provides:

i. Voltage gain

ii. Current gain

iii. Power gain

iv. Stability

Which is correct?

(1) i, ii

(2) i, ii, iii

(3) ii, iii

(4) ii, iii, iv

Answer: 2

12. An element between the two terminals of a network to which a connection can be made is

Called ________ while the branches of the tree are called ________

i. Branch

ii. Node

iii. Twig

iv. Loop

Which is correct?

(1) i, ii

(2) ii, iii

(3) iii, iv

(4) i, iv

Answer: 2

13. Consider the following statements regarding an RC phase shift oscillator:

i. Amplifier gain is positive.

ii. Amplifier gain is negative.

iii. Phase shift introduced by the feedback network is 180°.

iv. Phase shift introduced by the feedback network is 360°.

Which is correct?

(1) i, ii

(2) ii, iii

(3) i, iii

(4) i, iv

Answer: 2

Q-14 Read the following statements:

i. Gate is a combinational logic.

ii. JK Flip-flop in toggle mode is not combinational logic.

iii. MSJK FF suffers from race-around.

iv. Counters are sequential circuits.

Which is correct?

(1) i, ii

(2) i, ii, iv

(3) ii, iii, iv

(4) i, ii, iii

Answer: 2

Q-15 Which of the following peripherals provide I/O facilities?

i. 8279

ii. 8155

iii. 8259

iv. 8255

Choose the Correct Option:

(1) i, ii

(2) ii, iii

(3) iii, iv

(4) ii, iv

Answer: 4