# An excess-3 code is used to represent the integers 0 to 9, thus: Number Code (ABCD) 0 1100 1 0010 2 1010 3 0110 4 1110 5 0001 6 1001 7 0101 8 1101 9 0011 Which of the following expressions is the correct one for an invalid code

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# Match List-I with List-II and select the correct answer using the codes given below the Lists

1.  A   B   C   D 4   3   2   1

2.  A   B   C   D  3   4   1   2

3.  A   B   C   D  3   4   2   1

4.  A   B   C   D  4    3    2   1

4

A   B   C   D

4   3   2   1

Explanation :
No Explanation available for this question

# Match List-I(Modulation) with List-II(Characteristic) and select the correct answer using the code given below the lists: List-I                                 List-II A. AM              1. Mobile communication   B. FM                                 2. Constant carrier   C. Noise in FM               3. Triangular noise power spectrum D. Noise in AM and FM 4. Rectangular noise power spectrum

1.   A B  C D 2 1 4 3

2.   A B  C D 1 2 3 4

3.   A B  C D 1 2 4 3

4.   A B  C D 2 1 3 4

4
 A B C D 2 1 3 4

Explanation :
No Explanation available for this question

# The root locus of unity feedback system is shown in the above figure. The open-loop transfer function is given by

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# The use of non-uniform quantsation leads to

1.   reduction in transmission bandwidth

2.  increase in maximum SNR

3.  increase in SNR for low level signals

4.  simplification of quantization

4

increase in SNR for low level signals

Explanation :
No Explanation available for this question

# The open loop transfer function of a unity feedback control system is given by It the gain K is increase to infinity, then the damping ratio will tend to become

1.   1/√2

2.  1

3.   0

4.  ∞

4

0

Explanation :
No Explanation available for this question

# The baud rate is

1.  always equal to the bit transfer rate

2.  equal to twice the bandwidth of an ideal channel

3.  not equal to the signaling rate

4.   equal to one-half the bandwidth of ideal channel

4

equal to twice the bandwidth of an ideal channel

Explanation :
No Explanation available for this question

# The characteristic equation of a unity feedback control system is given by s3+K1s2+s+k2=0 Consider the following statements in this regard 1. For a given of K1, all the root-locus branches will terminate at infinity for K2 in the positive direction. 2. For a given value of K2, all the root-locus branches will terminate at infinity for variable K1 in the positive direction 3. For a given value of K2, only one root-locus branch will terminate at infinity for variable K1 in the positive direction. 4. Exponentially decaying

1.   1 and 2 are correct

2.   3 alone is correct

3.   2 alone is correct

4.  1 and 3 are correct

4

1 and 2 are correct

Explanation :
No Explanation available for this question

# Which of the following pairs are correctly matched 1. Multiplexed telegraph………….F.M. 2. Medium-wave radio propagation…………………A.M. 3. Television……….VSB 4. Short-wave radio propagation………A.M. Select the correct answer using the codes given below.

1.   2, 3 and 4

2.  2 and 3

3.  1, 2 and 3

4.  1 and 4

4

2, 3 and 4

Explanation :
No Explanation available for this question

# A three-stage walking or creeping counter is depicted below: How many states does this counter pass through before repeating In other words, what is its modulo?

1.  3

2.  8

3.  2

4.  The modulo cannot be determined given this information

4