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June 20th, 2014, 04:55 PM
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Download NET Electronic Science (paper II) Exam Paper
Give me question paper for Electronic Science paper II examination of National eligibility examination of University Grants Commission ? Here I am giving you question paper for Electronic Science paper II examination of National eligibility examination of University Grants Commission in PDF file attached with it so you can get it easily. 3. The radiative and non-radiative life times of the minority carriers in the active region of a double hetero- junction LED are 60 ns and 100 ns respectively. The internal quantum efficiency is given by : (A) 60% (B) 62.5% (C) 37.5% (D) 82.5% 4. In a p type silicon sample, the hole concentration is 2.25 × 1015/cm3. If the intrinsic carrier concentration is 1.5 × 1010/cm3, the electron concentration is given by (A) zero (B) 1010/cm3 (C) 105/cm3 (D) 1.5 × 1025/cm3 5. A signal m(f) = 5 sin (2π 100t) frequency modulates a carrier. The resulting FM signal is {10 cos (2π 105t) + 15 sin (2π 100 t)}. The approximate bandwidth of FM signal is (A) 0.1 kHz (B) 1 kHz (C) 3.2 kHz (D) 4 kHz 6. What is the Octal equivalent of the binary number 11111001 ? (A) 761 (B) 762 (C) 371 (D) 372 8. The gauge factor of a resistance wire strain gauge is a measure of (A) Sensitivity of the gauge (B) Resolution (C) Dynamic range of displacement measurement capability (D) Variable inductance 9. In an LVDT, the two secondary wind map are connected in differential to obtain (A) higher output voltage (B) an output voltage which is phase sensitive, i.e., the o/p voltage has a phase which can lead up to a conclusion whether the displacement of the core took place from right to left or from left to right. (C) in order to establish a null or the reference point for the replacement of the core. (D) both (B) and (C) 10. Microprocessor is also known as CPU. What is CPU ? (A) Control Processing Unit (B) Central Processing Unit (C) Central Progressing Unit (D) Control Progressing Unit 11. If ‘i’ is a variable, i++ denotes (A) ‘i’ is incremented twice (B) ‘i’ is incremented once (C) ‘i’ is replaced with i + 2 (D) ‘i’ is multiplied by 2 12. For a SMF, following characteristic are given by 1. 0 ≤ v < 2.405 2. v >> 2.405 3. Core radius is less than 10 μm 4. Attenuation is of the order of 1 dB/km Which of the following statement is true ? (A) 1 and 4 is correct. (B) 2 and 3 is correct. (C) 1 and 3 is correct. (D) 3 and 4 is correct. Last edited by Neelurk; May 6th, 2020 at 12:01 PM. |
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