_____________ is the effect caused by the use of an insufficient number of intensity levels in smooth areas of a digital image.

The effect caused by the use of an insufficient number of intensity levels in smooth areas of a digital image _____________

A

False Contouring

B

Interpolation

C

Gaussian smooth

D

Contouring

What is the name of the effect caused by the use of an insufficient number of gray levels in smooth areas of a digital image?

A

Dynamic range

B

Ridging

C

Graininess

D

False contouring

Directions : In each of the following questions a statement is given, followed by two conclusions. Give answer :

Statements : The average number of persons per household is 5 in urban areas whereas it is 7 in rural areas. The national average is 6.

Conclusions :
I. The population per unit area in the rural areas is higher than in the urban areas.
II. More persons live in the same household in the rural areas as compared to those in the urban areas.

A

Only conclusion I follows

B

Only conclusion II follows

C

Either I or II follows

D

Neither I nor II follows

E

Both I and II follow

A block of mass m₁, placed on an inclined smooth plane is connected by a light string passing over a smooth pulley to mass m₂, which moves vertically downwards as shown in the below figure. The tension in the string is
Engineering Mechanics mcq question image

Engineering Mechanics mcq question image

A

$$\frac{{{{\text{m}}_1}}}{{{{\text{m}}_2}}}$$

B

$${{\text{m}}_1}{\text{g}}\sin \alpha $$

C

$$\frac{{{{\text{m}}_1}{{\text{m}}_2}}}{{{{\text{m}}_1} + {{\text{m}}_2}}}$$

D

$$\frac{{{{\text{m}}_1}{{\text{m}}_2}{\text{g}}\left( {1 + \sin \alpha } \right)}}{{{{\text{m}}_1} + {{\text{m}}_2}}}$$

A deterministic signal has the power spectrum given in figure. The minimum sampling rate needed to completely represent signal is
Digital Communication mcq question image

Digital Communication mcq question image

A

1 kHz

B

2 kHz

C

3 kHz

D

None of these

A source produces binary data at the rate of 10 kbps. The binary symbols are represented as shown in the figure.
Digital Communication mcq question image

The source output is transmitted using two modulation schemes, namely Binary PSK (BPSK) and Quadrature PSK (QPSK). Let and B2 be the bandwidth requirements of BPSK and QPSK respectively. Assuming that the bandwidth of the above rectangular pulses is 10 kHz, B₁ and B₂ are

A

B₁ = 20 kHz, B₂ = 20 kHz

B

B₁ = 10 kHz, B₂ = 20 kHz

C

B₁ = 20 kHz, B₂ = 10 kHz

D

B₁ = 10 kHz, B₂= 10 kHz

Let x(t) = 2cos(800πt) + cos(1400πt).x(t) is sampled with the rectangular pulse train shown in the figure. The only spectral components (in kHz) present in the sampled signal in the frequency range 2.5 kHz to 3.5 kHz are
Digital Communication mcq question image

A

2.7, 3.4

B

3.3, 3.6

C

2.6, 2.7, 3.3, 3.4, 3.6

D

2.7, 3.3

In the following figure the minimum value of the constant "C", which is to be added to y₁(t) such that y₁(t) and y₂(t) are different, is
Digital Communication mcq question image

A

$$\Delta $$

B

$$\frac{\Delta }{2}$$

C

$$\frac{{{\Delta ^2}}}{{12}}$$

D

$$\frac{\Delta }{L}$$

Consider the signal x(t) shown in the figure. Let h(t) denote the impulse response of the filter matched to x(t), with h(t) being non-zero only in the interval 0 to 4 sec. The slope of h(t) in the interval 3 Digital Communication mcq question image

A

$$\frac{1}{2}{\sec ^{ - 1}}$$

B

-1 sec^-1

C

$$ - \frac{1}{2}{\sec ^{ - 1}}$$

D

1 sec^-1

With the display intensity corresponding to a given color index ci calculated as b) Intensity=0.5 c) Intensity=0.5 d) Intensity=0.5

A

Intensity=0.5

B

max(r, g, [+ max(r, g, [

C

max(r, g, b)+ max(r, g, b)

D

max(r, g, b)+ max(r, g, b)

_____________ is the effect caused by the use of an insufficient number of intensity levels in smooth areas of a digital image.

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