# Consider the following statements about the C-V characteristics plot : S1 : The MOS capacitor has an n-type substrate. S2 : If positive charges are introduced in the oxide, the C-V plot will shift to the left. Then which of the following is true

1.  Both S1 and S2 are true

2.  S1 is true and S2 is false

3.  S1 is false and S2 is true

4.  Both S1 and S2 are false

4

S1 is false and S2 is true

Explanation :
No Explanation available for this question

# The ratio of the average energy of Constellation 1 to the average energy of Constellation 2 is

1.  4a2

2.  4

3.  2

4.  8

4

4

Explanation :
No Explanation available for this question

# If  these constellations are used  for digital communications over an AWGN  channel,  then which of the following statements is true

1.  Probability of symbol error for Constellation 1 is lower

2.  Probability of symbol error for Constellation 1 is higher

3.  Probability of symbol error is equal for both the constellations

4.  The value of N0 will determine which of the two constellations has a lower probability of symbol error

4

Probability of symbol error for Constellation 1 is higher

Explanation :
No Explanation available for this question

# The transfer function V0(s) Vt(s) is

1.  (1 - sRC)/(1 + sRC)

2.  (1 + sRC)/(1 - sRC)

3.  1/(1 - sRC)

4.  1/(1 + sRC)

4

(1 - sRC)/(1 + sRC)

Explanation :
No Explanation available for this question

# If Vi = V1 sin (ωt) and V0 = V2 sin (ωt + ), then the minimum and maximum values of  ? (in radians) are respectively

1.  -π/2 and π/2

2.  0 and π/2

3.  -π and 0

4.  -π/2 and 0

4

-π and 0

Explanation :
No Explanation available for this question

# The contents of the accumulator just after execution of the ADD instruction in line 4 will be

1.  C3H

2.  EAH

3.  DCH

4.  69H

4

EAH

Explanation :
No Explanation available for this question

# Alter execution of line 7 of the program, the status of the CY and Z flags will be

1.  CY = 0, Z = 0

2.  CY = 0, Z = 1

3.  CY = 1, Z = 0

4.  CY = 1, Z = 1

4

CY = 1, Z = 0

Explanation :
No Explanation available for this question

# An  input  to  a  6-level  quantizer  has  the  probability  density  function  f(x)  as  shown  in  the figure. Decision boundaries of  the quantizer are chosen so as  to maximize  the entropy of the quantizer output. It is given that 3 consecutive decision boundaries are '-1', '0' and '1'. The values of a and b are

1.  a = 1/6 and b = 1/12

2.  a = 1/5 and b = 3/40

3.   a = 1/4 and b = 1/16

4.  a = 1/3 and b = 1/24

4

a = 1/6 and b = 1/12

Explanation :
No Explanation available for this question

# Assuming that the reconstruction levels of the quantizer are the mid-points of the decision boundaries, the ratio of signal power to quantization noise power is

1.  152/9

2.   64/3

3.  76/3

4.   28

4

64/3

Explanation :
No Explanation available for this question

1.  31.25 μA

2.  62.5 μA

3.  125 μA

4.  250 μA

4