IV B.Tech I Semester Supplementary Examinations, April/May 2005 DIGITAL INSTRUMENTATION (Electronics & Instrumentation Engineering) Time: 3 hours Max Marks: 70 Answer any FIVE Questions All Questions carry equal marks ????? 1. (a) Explain the different type of marking mechanism used in recorders. (b) Describe the working of a potentiometric type strip chart recorder. 2. (a) Explain the basic components of a tape recorder. (b) Describe how the pulse duration modulation recording is done in a magnetic tape. 3. (a) Explain with help of a block diagram, a data acquisition system representing A/D converter with an analog multiplexer and the necessary control circuitry. (b) Show with a sketch how each of there errors, linearity error, gain error, offset error, montonicity will cause the actual output to differ from the expected output in a D/A converter. 4. (a) Draw block diagram of a successive-approximation type A/D converter and briefly describe its operation. (b) Why is it necessary to use a sample and hold circuit when you are digitizing rapidly changing signal. (c) How often must a sine wave input be sampled? (d) Define acquisition time and aperture time for a sample hold. 5. (a) Describe the problem that occurs when you attempt to connect together two RS 232C device that are both configured as DTE. Draw a diagram which shows how this problem can be solved. (b) Give the signal voltage range for a logic high and for a logic low in the RS 232C standard. (c) Give the specification for a data acquisition system. 6. (a) Explain with neat diagram the operation of S/H DAC and cyclic DAC. (b) Describe in detail multiplying DAC. 7. (a) A control value has a linear variation of opening as the input voltage varies from 0 to 10V. A microprocessor output, an 8bit output word to control valve opening using 8bit D/A converter. i. Find the reference voltage required to obtain full valve opening. ii. Find the percentage of valve opening for all bit change in the input word.
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Code No: OR411052
(b) An analog voltage signal whose highest significant frequency is 1KHZ is to be digitaly coded with a resolution of 0.01percent, covering a voltage range of 0-10V. Determine i. ii. iii. iv. v. vi.
Minimum number of bits in the digital code. Analog value of LSB rms value of the quantization error Minimum sampling rate aperture time required for the AD converter Dynamic range of conversion in dB.
8. (a) Explain in detail abut analog multiplexing. (b) Describe the following in conjunction with D/A converter i. Range of converter ii. MSB iii. LSB (c) Explain in detail about data logging. ?????
OR411052 IV B.Tech I Semester Supplementary Examinations, April ...
iv. Minimum sampling rate v. aperture time required for the AD converter vi. Dynamic range of conversion in dB. 8. (a) Explain in detail abut analog multiplexing.
(a) What is Redundancy? Explain the different types of Redundancy operation with LCU. (b) explain the operation of: i. Operator interface. ii. Engineer interface.
(b) Briefly explain the shift instructions also give the examples. 4. Write a procedure SOLUTION that will use the arithmetic operators procedures to evaluate the ...
let us make a rough estimate of its role. For this assume isothermal operations in a 2.5-cm ID tubular reactor, using a Reynolds number of 10 000 for flowing fluid. The cracking reaction is approximately first order. If calculations show that 99% dec
With an example explain the distributed transparency for read-only application. 2. ... Discuss the catalog management in distributed databases. 6. What is the ...
(b) Sketch the bevel protractor and explain the various elements of it. 3. (a) Explain the following terms with respect to surface measurements. i. Lay ii. CLA iii.
(a) List and explain the metrics for the analysis model. (b) Describe the metrics for ... (a) Describe the object oriented design landscape. (b) What are design ...
What is a hot blast cupola? With a neat sketch describe the construction and operation of hot blast cupola. Explain the reactions those take place in the above.
What are the modes of operation of a Hopfield network? Explain the algorithm for storage of information in a Hopfield network. Similarly explain the recall algo-.
alternator affects the performance of the differential protection of the three phase · stator. b) Describe how protection is provided in large turbo alternators against ...
(b) Can a second end check point record be encountered during analysis phase? (c) Why is the use of CLRS important for the use of UNDO actions that are not.
(a) Explain tree testing of prosthetic heart valve using a pulse duplicator. (b) Discuss the ... Explain with diagram, the types of exchangers used in artificial kidney.
(b) What is pretreatment required for sea water to be treated by electro dialysis? (c) Explain the conventional methods that could be employed for the treatment.
7.a) Explain the working principle of a simple accelerometer and vibrometer. b) Define the term gauge factor of strain gauge and strain gauge Rosetle. How are.
Find the loss of stress due to creep of concrete. (b) A concrete beam is prestressed by a cable carrying an initial prestressing force of 335kN. The cross sectional ...
NR. IV B.Tech I Semester Supplementary Examinations, November 2005 ... NR size is smaller than the fiber core, and the small gap between the source and.
RELIABILITY & SAFETY ENGINEERING · (Electronics & Control Engineering) ... (a) Explain the following terms in connection with reliability evaluation. [2+3].
NR. IV B.Tech I Semester Supplementary Examinations, November 2005 ... 3. Analyse the following frame using stiffness method. EI constant. (figure 3) [16].
What do you understand by Non-destructive testing techniques? List various tech- · nique of NDT and explain any three of them · [16]. 8. Write short notes on the ...
