1. Speed of sound is maximum in-

a) Water          b) Air               c) Steel                d) Vacuum

2. The noun form of 'fresh' is ?

a) freshly                b) freshen                   c) fresheners                 d) fresh itself

3. High level programs like C are converted into machine language with the help of

a) interpreter             b) compiler                  c) operating                 d) system

4. Which one is most suitable for transmission through wave guide-

a) Hown antennas               b) Bioconical antennas                 c) helical antenna                    d)Discone

5. The 1.55 mm windows is not yet in use with fiber optic systems because ?

a) The attenuation is higher than at 0.85 mm

b) The attenuation is higher than at 1.3mm

c) Suitable laser devices have not yet been developed

d) It does not lend itself to wavelength multiplexing

6. Modems are used for data transmission telephone lines to ?

a) increase the transmission capacity

b) improve noice performance

c) incorporate error control coding

d) eliminate dc component in the transmitted signal

7. Name the fastest logic family-

a) TTL                b) RTL                c) DCTL                d) ECL

8. The Q of a radio coil ?

a) is independent of frequency

b) increases monotonically as frequency increases

c) decreases monotonically as frequency increases

d) increases upto a certain frequency and then decreases beyond that frequency

9. Joule/coulomb is the unit of -

 a)   Electric field potential                 b)   Potential               c)   Charge                   d)   None of the above

10. The device which acts like an NPN and a PNP transistor connected base to base and emitter to collector is ?

a) Triac              b) UJT                   c) Diac                   d) SCR

11. The input gate current of a FET is ?

a) a few microamperes               b) negligibly small                    c) a few milliamperes                   d) a few amperes

12. For small size, high frequency coils, the most common core material is-

a) Air              b) Ferrite                  c) Powdered ion                     d) Steel

14. Rabindranath Tagore was awarded the Nobel Prize in literature in the year.

a) 1908                b) 1910                  c) 1913                  d) 1914

15. The Forbes magazine acclaimed Azim Premji as richest India's is the chairman of-

a) Pentafour software                     b) Infosys                     c) IBM                     d) Wipro