1. Which of following dissipates least power?

a.TTLb.ECL c.RTL d.CMOS [ans]

2. What is the Laplace transform of unit impulse function?

Ans.1/s.

3. The resistor is given voltage V=150 sint. what is the power dissipated?

4. How to find the value of Z in theveins theorm ?

Ans sc voltage source and oc current source.

5. If in addition of excess-3 code the sum exceeds 9 then what we hav to do?

Ans subtract it by 0011

6. A signal is modulated having modulation index 3 and 4. what will be resultant M.I

Ans5[srt of m1+m2]

7. IC timer 555 can be used as?

a. astable mvb. monostable mv c. freq divider d. all[ans]

8. Give the contents of SP & HL pair after the execution of following statements

1002 LXI SP, 27FFH

1003 CALL 1006H

1006 PUSH H

Ans SP=27FFH HL=1006H

9. Phase margin of system is 125 what is its gain margin?

Ans -125 [not sure]

10. If the gate voltage is increased the n what will be the effect In MOSFET?

Ans Channel widens.

11. Current in the rotor of 3 phase induction motor is due to?

Ans Induction.

12. Question on transmission line with values of Zoc and Zsc given.Find the value of Zch?

Ans Zch =sqrt[ZocXZsc].

13. White noise has?

Ans Flat power spectral density.

14. The Transfer function of the system was given. find the no. of breakaway pts?

15. If a function has half wave symmetry its Fourier transform consist of?

A. only odd harmonics

B. only even harmonics

C. Both even & odd harmonics but no constant term

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