📣 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 2016 Past Paper Questions (Previous Year Papers) Part 2

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Q-10. Consider the following program

main ()

{

float ;

if ()

if (a < 0.3) printf ( “xyz” ) ;

else printf ( “ABC” ) ;

else printf ( “MLN” ) ;

}

The output is

1. XYZ

2. MLN

3. ABC

4. None of these

Q-11. For a matched junction, scattering parameters are given values, which one of the following is true?

1.

2.

3.

4.

Q-12. The number of bits per sample in a PCM system is increased from 8 to 16. The bandwidth of the system would increase

1.8 times

2.2 times

3. times

4.24 times

Q-13. An infrared LED is optically coupled to a photodiode. When LED is turned off, the reading on an ammeter in series with the reversed-biased photodiode will

1. Not change

2. Decrease

3. Increase

4. Fluctuate

Q-14 After firing a SCR, the gating pulse is removed, the current in the SCR will

1. Remains the same

2. Immediately falls to zero

3. Rise up

4. Rise a little and then falls to zero

Q-15. A signal is defined as . Its Laplace transform will be

1.

2.

3.

4.

Q-16. For intrinsic semiconductor the conductivity is

(I)

(II)

(III)

(IV)

Out of these the following is correct

(1) (I) and (II) are correct

(2) (I) and (III) are correct

(3) (II) and (IV) are correct

(4) (III) and (IV) are correct

Q-17 Read the following statements:

(I) The gain crossover is a point on the plot at which the magnitude of is equal to 1.

(II) The gain crossover is a point on the plot at which the magnitude of is equal to 0.

(III) The gain crossover frequency, is the frequency of where

(IV) The gain crossover frequency is the frequency of where

Which of the above statements are correct?

1. (I) and (II)

2. (I) and (III)

3. (II) and (III)

4. (III) and (IV)

Q-18. In a p-n junction diode if A is the area of a junction then the transition capacitance is

(I)

(II)

(III)

(IV)

Out of these which one is correct?

1. (I) and (II) are correct

2. (I) is correct but (II) is wrong

3. (II) is correct, but (IV) is wrong

4. (I) and (IV) are correct