TANCET 2003(Questions from Question Paper for Year 2003)

 Q1 to Q10    


 Q11 to Q20






21.The transfer impedence and admittance of a network remain constant when the positions of excitation and response are interchanged, if the network

(i) is linear

(ii) consist of bilateral elements

(iii) has high impedence or admittance as the case may be, and

(iv) is resonant.

Out of the above statements

A) (i) and (ii) correct

B) (i), (iii) and (iv) are correct

C) (ii) and (iv) are correct

D) (i), (ii), (iii) and (iv) are correct



22. The induced emf in one phase of the rotar winding of an induction motor is 120V when the rotor is blocked, and the resistance and reactance per phase of the stator winding are 0.2Ω and 0.3Ω. The rotor current is

A) 300 A

B) 332 A

C) 360 A

D) 250 A



23. A 1:5V stepup transformer has 120V across the primary and 600Ω Resistance across the secondary. Assumng 100% efficiency, the primary current will be

A) 0.2 A

B) 0.5 A

C) 10 A

D) 5 A



24. A 2 kW single phase rotary converter open at full load from 230V AC source. Assume unity power factor and 100% efficiency, DC current will be

A) 6 A

B) 8.7 A

C) 6.15 A

D) 5 A



25. The type of a system is a number of

A) Poles of        G(s)    lying at origin

                     1+GH(s)



B) Zeros of        G(s)    lying at origin

                     1+GH(s)



C) Poles of  GH(s) lying at origin



D) Zeros of  GH(s) lying at origin





26. When a zero at s = -8 is added in the loop transfer function, G(s)H(s) = k / (s(s+5)), the resultant root locus

A) Bends towards right half of s-plane

B) Bends towards left half of s-plane

C) Remains unaffected

D) Contains one more branch



27. A resonant pluse commutation circuit has C = 20µF and L = 5µH. If the supply voltage is 230V, the peak value of the resonant current is

A) 460 A

B) 115 A

C) 920 A

D) 57.5 A



28. A three phase full converter charges a battery whose internal resistance is 0.5Ω with a steady state current of 40 A. The firing angle of the SCRs is

A) 14.38^o


B) 46.77^o

C) 49.61^o

D) 23.61^o



29. A strain gauge has a resistance of 350Ω and a gauge factor of 2. When a it is subjected to a strain of 0.1%, its change in resistance will be

A) 17.5Ω


B) 0.7Ω

C) 70Ω

D) 0.175Ω



30. In a board plot, the magnitude at the phase cross over frequency is 12 dB. The gain margin is

A) 0.25


B) 0.6


C) 4


D) 1/12







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