TANCET 2008(Questions from Question Paper for Year 2008)

 Q1 to Q10    
 Q11 to Q20
TANCET (Questions from Question Paper for Year 2008)

21. In bode plot, systems with dead time
A) Introduces phase angle of -Wτ_DX180⁰/π in phase plot
B) Introduces phase angle of Wτ_DX180/π in phase plot
C) Introduces phase angle of Wτ_D/π in phase plot
D) Phase plots is unaffected

22. When a line commutated converter operates in the inverter mode
(i) Draws both real and reactive power from the AC supply
(ii) It delivers both real and reactive Power to the Ac supply
(iii) Delivers real power to the AC supply
(iv) It draws Reactive power from the AC supply
from these, the correct statements are
A) (i) and (ii)
B) (ii) only
C) (iii) only
D) (iii) and (iv)

23. Which of the following is the linear phase FIR filter?
A) (Z - 1) (Z + ½) (Z - 2)
B) (Z - 1) (Z - ½) (Z + 2)
C) (Z - 1) (Z - ½ + j√3/2 ) (Z + ½ - j√3/2)
D) (Z - 1) (Z - ½ + j√3/2 ) (Z - ½ - j√3/2)

24. Which of the following system is both causal and stable
A) y[n] = x[n] + x[n-1] + x[n+1]
B) 2y[n] -y[n-1] = 2x[n]
C) y[n] - 2y[n-1] = x[n]
D) y[n] + 2y[n-1] = x[n]

25. What is the Z-transform of double integral of a unit sample function
A) (Z-1) / Z
B) Z / (Z-1)²
C) Z² / (Z-1)²
D) (Z-1)² / Z²

26. The prototype second order lowpass type buterworth filter is given by
A) √2 / (S² + √2s + 1)
B) 2 / (S² + √2s + 2)
C) 1 / (S² + √2s + 1)
D) (S² + √2s + 2)

27. The Gauge factor G and the poisson's ratio µ are related as
A) g = 1 + µ
B) G = µ
C) G = 2 + µ
D) G = 1+ (µ/2)

28. A piece of brass 50cm long and with a cross sectional area of 1.5cm² was elongated to 0.075cm. The force applied to the sample (young's modulus for brass = 9.66x10⁵ kg/cm²) is
A) 2000.2 kg/cm²
B) 2173.5 kg/cm²
C) 2713 kg/cm²
D) 2273.5 kg/cm²

29. Manometer measure unknown pressure by
A) Measuring liquid levels
B) Measuring height of the liquid column
C) Balancing the unknown force produced by pressure
D) Nothing the deflection of a pointer

30. Hall effect transducers have the drawbacks of
A) High sensitivity to temperature variation
B) Variation Hall's co-efficient from plate to plate
C) Poor resolution
D) Both A) and B)

Answer: 21-C; 22-B; 23-A; 24-A; 25-B; 26-C; 27-C; 28-B; 29-B; 30-D.