📣 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 June 2013 Past Paper Questions (Previous Year Papers) Part 1

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Q-1 In intrinsic semiconductor

(1) The electron density is twice the hole density

(2) The electron density is thrice the hole density

(3) The electron density is square root of the hole density

(4) The electron density is same as the hole density

Q-2 PN junction diode can be used as a/an

(1) Oscillator

(2) Amplifier

(3) Insulator

(4) Rectifier

Q-3 Norton՚s equivalent form in any complex impedance circuit consists of

(1) An equivalent current source in parallel with an equivalent resistance.

(2) An equivalent voltage source in series with an equivalent resistance.

(3) An equivalent current source in parallel with equivalent impedance.

(4) An equivalent voltage source in series with equivalent impedance.

Q-4 Zener diode is a

(1) Reverse biased diode

(2) Variable voltage source

(3) Constant current source

(4) Forward biased diode

Q-5 Which of the following oscillator make use of both positive and negative feedbacks?

(1) Hartley oscillator

(2) Colpit՚s oscillator

(3) Phase shift oscillator

(4) Wein-Bridge oscillator

Q-6 Superposition theorem can be applied only to circuits having

(1) Resistive elements

(2) Passive elements

(3) no-linear elements

(4) Linear bilateral elements

Q-7 Identify the fastest analogue to digital converter

(1) Ramp conversion

(2) Parallel conversion

(3) Successive approximation

(4) Dual-slope integration

Q-8 1 K memory device contain

(1) 1064 memory cells

(2) 1024 memory cells

(3) 512 memory cells

(4) 640 memory cells

Q9. Which logic function has the output low only when both inputs are high?

(1) NOR

(2) OR

(3) AND

(4) NAND

Q10. In FM, when frequency deviation doubled, then

(1) Modulation Index is decreased

(2) Modulation Index is doubled

(3) Modulation Index halved

(4) No change occurs in modulation index values

Q11. Out of the following memory types, one that is volatile is

(1) Magnetic disc

(2) Ferrite core

(3) Semiconductor ROM

(4) Semiconductor RAM

Q12. An SCR can be formed by using

(1) 2 NPN transistors

(2) 2 PnP transistors

(3) 1 NPN and 1 PnP transistor

(4) 2 pn diode

Q13. The pH of human blood is between

(1) 6.5 to 7

(2) 7.5 to 8

(3) 8 to 9

(4) 4.5 to 5

Q14. What is SIM?

(1) Select Interrupt Mask

(2) Sorting Interrupt Mask

(3) Set Interrupt Mask

(4) Start Instruction Mode