1. Anode current in an thyristor is made up of ?

a) electrons only               b) electrons or holes                  c) electrons and holes                  d) holes only

2. The most common device used for detection in radio receivers is ?

a) amplifier                b) triode                   c) diode                   d) transistor

3. Quad 2 input AND gates IC No is ?

a) 7411                  b) 7404                  c) 7400                   d) 7408

4. In the 8421 BCD code the decimal number 125 is written as ?

a) 1111101                b) 0001 0010 0101                     c) 7D                     d) None of the above

5. The maximum phase shift that can be provided by a lead compensator with transfer function.

a) 150              b) 450                 c) 300                   d) 600

6. Number of asymptotes of its root loci is

a) 1                b) 2                 c) 3                d) 4

7. Boolean algebra is based on ?

a) numbers                  b) logic                   c) truth                d) symbols

8. Nanometre is  __________ part of a metre.

a) Millionth                b) Ten millionth                 c) Billionth                    d) Ten billionth

9. Sindhu Rakshak is a/an

a) Aircraft carrier                  b) Submarine               c) Multiple-purpose fighter                     d) Anti-aircraft gun

10. Which of the following will serve as a donor impurity in silicon ?

a) Boron                 b) Indium                  c) Germanium                  d) Antimony

11. Modern capacitors which have high capacitance in small size use a dielectric of ?

a) paper                    b) rubber                 c) ceramic                  d) Mylar

12. An SCR can only be turned off via it's ?

a) cathode                b) anode                c) gates                   d) none

13. When a network has 10 nodes and 17 branches in all then the number of node pair voltages would be -

a) 7                  b) 9                  c) 10                  d) 45

14. In a cylindrical cavity resonator, the two modes which are degenerate would include

a) TE111 and TM111                    b) TE011 and TM011                 c) TE022 and TM111                      d) TE111 and TM011  

15. In commercial FM broadcasting, the maximum frequency deviation is normally

a) 5 KHz                     b) 15 KHz                c) 75 KHz                     d) 200 KHz