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Directions to Solve

In the following questions choose the word which is the exact OPPOSITE of the given words.

Q1: ENMITY

A Friendship

B Likeness

C Important

D Unnecessary

Q2: What will be the output of the program? 
#include<stdio.h>
int main()
{
    int x=1, y=1;
    for(; y; printf('%d %d\n', x, y))
    {
        y = x++ <= 5;
    }
    printf('\n');
    return 0;
}

A 2 1
3 1
4 1
5 1
6 1
7 0

B 2 1
3 1
4 1
5 1

C 2 2
3 3
4 4
5 5

D 2 1
3 1
4 1
5 1
6 1

Q3:
What function is performed by the block labeled X in the given figure?

A Digital-to-analog conversion

B Analog-to-digital conversion

C Audio ON/OFF control

D Power supply for the audio amplifier

Q4: Inaccurate A/D conversion may be due to:

A intermittent counter inputs

B linear ramp usage

C constant analog input voltage

D faulty sample-and-hold circuitry

Q5: What is the resolution, in percent, of a 12-bit DAC?

A 8.33

B 0.083

C 0.049

D 0.000488

Q6: What circuitry is on an ADC0808 IC?

A A 3-bit select input code

B A multiplexer

C All of the above

D An ADC

Q7: What is the maximum conversion time for an 8-bit successive-approximation ADC with a clock frequency of 20 kHz?

A 0.4 ms

B 12.8 ms

C 6.4 ms

D 0.05 ms

Q8: What is one advantage to using a parallel-encoded (flash) ADC?

A less expensive

B less complicated circuit

C very fast conversion

Q9: If the same analog signal is to be converted to an 8-bit resolution using a counter-ramp ADC, how many comparator circuits would be used?

A 1

B 127

C 255

D 8

Q10: What is the major advantage of the R/2R ladder D/A converter as compared to a binary-weighted D/A converter?

A It is much easier to analyze its operation.

B It uses only two different resistor values.

C It has fewer parts for the same number of inputs.

D The virtual ground is eliminated and the circuit is therefore easier to understand and troubleshoot.