I need NTPC Executive Engineering paper for Control and Instrumentation Students, would you like to provide here???

You are looking for NTPC Executive Engineering paper for Control and Instrumentation Students, i am giving here:

1. expression for ?(n): u(n)-u(n-1)/ u(n-1)-u(n+1)/ u(n)+u(n+1)/…

2. numerical on a photodiode: to calculate the responsivity/sensitivity when a specified no of incident photons cause a specified no of electron generation.

3. for a radioactive sample which decays to 12.5% of its initial value in x days, the half life is given by..

4. connect two 1? resistors in series, then connect two 1H inductors across one of the resistors such that the ckt looks like a 1? resistor in series with a ?-section of a resistor and two inductors. With the series resistance on the i/p side, calc the transfer function of this ckt

5. AC signal conditioning is used for inductive and capacitive/resistive/piezoelectric transducers/all of the above.

6. Lower useful input limit of a transducer is determined by

7. air-cored inductors are used for low frequency/high frequency/equal frequency operations.

8. given 4 pole-zero plots identify which one corresponds to the driving point impedance of a series resonant ckt.

9. given four unit-circle plots identify the one corresponding to a bandpass filter.

10. the sequence (2,3,4,3) is circularly even/circularly odd/circularly zero/both circularly even and odd.

11. z-transform of 3n u(n).

12. match the following with their characteristics: LED/LCD/nixie tube/optical fibre.

13. a 4 kHz signal is sampled at thrice the Nyquist rate and sent through a channel with error ?1%. Calc the bandwidth of the channel.

14. given an op-amp ckt obtain an expression for o/p voltage.

15. no. of encirclements made about the origin of the nyquist plot of the open loop TF:1/[(s-1)(s+2)(s+3)].

16. given a two port network in the form of a T find o/p admittance in terms of y-parameters.

17. for a repeater in a PCM cable identify the correct sequence of actions amongst threshold/equalization/etc.

18. o/p of a delta modulator when a ramp input is fed to it.

19. steady state error with ramp i/p for a type-0 system.

20. creeping occurs in energy meters bcoz.

21. ultrasonic method of flow measurement cannot be used in liquids with air bubbles/has less attenuation in air compared to liquid-identify the false statement (if any) among these.

22. major cause of losses in a fibre optic cable: dispersion/total internal refraction/presence of core and cladding/

23. which layer in the OSI model is concerned with printer buffering,etc: network/session/transport/

24. given some function F(j?) calc its inverse CTFT.

25. relation between laplace and z-transform: s=z/ s=ln z/ s=( ln z/T) /

26. maxm and minm probability error among ASK,PSK,FSK,DPSK etc

27. which of the following is a non linear modulation scheme: PAM/QAM/PCM/

28. match the following functions: e-t , e-t + et, sin(?t) with causal and stable system, causal and unstable system, etc.

29. given a ckt with a 50 ? resistor in series between two voltage sources of 10 V and 5 V magnitude calc power delivered by 5 V source.

30. laplace transform of e-3tu(t)+e2tu(-t).

31. which photodetector has output affected by own intrinsic noise: PN/APD/PIN/all.

32. inverse laplace transform of 1/s2[d/ds(e-3s/s)]

33. when I mode is added to proportional control system stability increases/ decreases/ steady state performance deteriorates/damping increases.

34. reset control is another name for integral/derivative/proportional/. Control.

35. time response of system having transfer function 625/(s2+25) will be of the form