Indian Institute of Technology Kharagpur (IIT-K) 2006 M.E Electronics and Telecommunications Gate ece - Question Paper
Wednesday, 23 January 2013 01:55Web
Page 4 of 7
27. Consider 2 transfer functions
G1(S)=s2+as+b and G2(S)=s2+as+b•
Vo(t)
The 3-dB bandwidths of their frequency responses are, respectively
(A) %Ja2 _4b,%Ja2 +4b
(B) %Ja2 + 4b, %Ja2 — 4b
28. A negative resistance Rneg is connected to a passive network N having driving point
impedance Z1 (s)as shown beneath. For Z2 (s)to be positive real,
Z2(s)
(A) R I
(C) R 1< ImZ1(ja),va neg —
(D) R
is changed to position 2. presume that the diode has zero voltage drop and a storage time t5.
For 0 < t < t5,v is provided by (all in Volts)
(A) v=—5
(B) v=--5
(D) —5
direction perpendicular to a uniform magnetic field B. the electric field E induced due to Hall
effect acts in the direction
(A) v x B
(B) Bxv
(C) along v
(D) opposite to v
31. A heavily doped n—type semiconductor has the subsequent data:
Hole-electron mobility ratio : 0.4
Doping concentration : 4.2x 108 atoms/m3
Intrinsic concentration : 1.5x 10 atoms/m3
The ratio of conductance of the n —type semiconductor to that of the intrinsic semiconductor
of identical material and at the identical temperature is provided by
(A) 0.00005
(B) 2,000
(C) 10,000
(D) 20,000
32. For the circuit shown below; presume that the zener diode is ideal with a breakdown
voltage of six Volts. The waveform observed across R is:
(A)6V
(B)l2sinot R VR
(C)12V
33. A new Binary Coded Pentary (BCP) number system is proposed in which every
digit of a base-5 number is represented by its corresponding 3-bit binary code.
For example, the base-5 number 24 will be represented by its BCP code 010100.
In this numbering system, the BCP code 100010011001 corresponds to the
subsequent number in base-5 system
(A) 423
(B) 1324
(C) 2201
(D) 4231
34. An I/O peripheral device shown in figure (b) beneath is to be interfaced to an 8085
| Earning: Approval pending. |
