IndiaBIX

Digital Electronics - Interfacing to the Analog World

Exercise : Interfacing to the Analog World - General Questions
51.

Referring to the given figure, what appears to be wrong, if anything, with the output of the D/A converter?

The input signal is probably noisy.
There appears to be some nonlinearity in the scope display.
The converter has a nonmonotonic output error.
It appears that certain input codes are incorrect; double-check the input coding.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
52.
What is the maximum conversion time for a counter-ramp ADC with 8-bit resolution and a clock frequency of 20 kHz?
12.8 ms
6.4 ms
0.05 ms
0.4 ms
Answer: Option
Explanation:
No answer description is available. Let's discuss.
53.
A test system using the GPIB is being used to monitor a potentially dangerous crash test from a distance of 200 feet. The engineer decides to have you fabricate a special cable, rather than order one, since all the materials are on hand and the tests are already behind schedule. When the tests are run, the test system is erratic and the data is almost useless. What has gone wrong?
The engineer is probably not using the correct data format for the specific instruments being used to collect the data.
The GPIB cable is too long; a bus extender should be used.
The cable should be shielded and properly grounded.
The tests themselves probably produced extraneous signals that confused the instruments, resulting in unusable data.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
54.
A certain digital-to-analog converter has a step size of 0.25 V and a full-scale output of 7.75 V. Determine the percent of resolution and the number of input binary bits.
31%, 4 bits
3.23%, 4 bits
31%, 5 bits
3.23%, 5 bits
Answer: Option
Explanation:
No answer description is available. Let's discuss.
55.
A simultaneous A/D converter is also known as a(n) ________ A/D converter.
flash
synchronous
comparator
asynchronous
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers