NTPC (Control and Instrumentation) 2011 Paper

1. Find centeriod for g(s)=k/s(s+1)(s+2)
2. Find the value of K for s3+Ks2+5s+10=0
3. FSK is used in __

4. Which of the following technique is NOISE IMMUNE
5. Match the following
CAPACITANCE = FARAD
FLUX DENSITY = WEBER
CONDUCTANCE = SIEMENS
ADMITANCE = mho
6. Find minimum sampling rate for X(t)= Cos(100 πt)+ Cos(200 πt)
7. Laplace Transform of dF(t)/d(t)= s.F(s) - F(0-)
8. G(s) = (z-2)(Z+3) / (z+1/2)(z-2)(z+3/2)
9. LT[e-At]=1/(S+A)
10. Find natural frequency for G(t)=10 sin 6t. e-8
11. Find Damping factor for G(t.=10 sin 6t. e-8t
12. PH measurement consist of
A. PH sensor, PH electrode, Transmitter
B. PH sensor, preamplifier,
13. Which transducer converts Magnetic fields in to electrical Signal
A. Rotating Head
B. Tape Head
14. Input Impedance is high in capacitive transducer Due
15. Transducer Mechanism used in Potentiometer
A. Piezoelectric
B. Capactive transducer
c. Resistive transducer
16. Displacement sensor Range depend upon
17. Arranging Decressing order of their frequency
Ultraviolet, Infrared, Visible
18. The Nyquist plot of G(jw). H(jw) of closed loop control system enclose the point (-1, j0) in GH Plane. The gain margin of the system in dB is
19. The Impulse response of RL circuit is
20. The unit step u(t-5) is applied to the RL n/w the Current I is
21. UNIT OF Y PARAMETER
22. margin of logic Swing is
23. DTL is prefferd to RTL Due to
24. Which one is More Complex
A. TTL B. I2L C. RTL D. DTL
25. Radix point in number system
A. Binary point B.Hexadecimal C. OCTAL D. Decimal

26) A Phase LAG has the characteristics of
28) in Q meter
a) measured value is greater than true value
b) measured value is less than true value
c) measured value is equal to true value
d) none of these
29) one question is based on the formula
Rise time* BW=0.35
30) Input resistance of CRO is In
31) Fan out of MOS Device is large because of
A) High Input impedance
B) low output impedance
c)
d)
32) Full form of LASER
33) Row operation used in
34) Which one of the following is the characteristics of LASER
35) Curve Fitting is a function of
A) Interpolation
b) Mathematical function
36) one instrumentation question: 10A in 0-100 A range, ±2% error
37) range of DC milli ammeter ca be extend using
A) series high resistance
B) series Low resistance
C) shunt high resistance
D) shunt low resistance

APPTITUDE
1) 8 men & 12 women can do a piece of work in 25 days. In how many day 6 men & 11 women working together can do the same work
2 & 3) Two series completion question like
96++**6996++**69……………..
++++---63+++++--…………..
4) Indira Gandhi peace award 2009
Options like president of Bangladesh(Sekh hasina)
5 to 9) question based on VENN DIAGRAM
10 to20) Data interpretation question
21-25) COMPREHENSION
26) in a company, total worker 500. If 15% are Women, after some time 50 worker hired, how many women will be added to complete the 30% women.