Questionbanks | EIM (Electronics)
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Brainheaters Questionbanks is the collection of handpicked set of questions which are mostly repeated, important and recommended. Learning this set of questions can easily help you top or even just clear the exams. Given below are Expected Questionbanks for semester. To get the solutions to this questions just simply click the Notes and you will be redirected to our notes, Bh.Notes holds all the answers of Semester !
1. Explain in detail different types of errors in measurement system.
2. Discuss static and dynamic parameters of instruments with importance of each parameter under consideration
3. Define the following dynamic characteristics of instruments & mention for which types of measurements they have to be considered ? (i) Speed of Response (ii) Lag (iii) Fidelity (iv) Dynamic Error
4. The true value of the voltage across a resistor in a circuit is 10 V when it is calculated by mathematical analysis. Measuring the same voltage by six different random individuals (but all with the same digital multimeter) gives the following results as shown : (Given Table)
(i) Calculate the arithmetic mean (average) for the above observations.
(ii) Calculate the percentage error for the fourth observation.
(iii) Calculate the accuracy for the second observation.
(iv) Determine the precision of the fifth observation.
(v) Calculate the standard deviation (Given any value) for the above observations.
(vi) Calculate the average deviation (Given any value) for the above observations,
students can attempt any five sub-questions between (i) to (vi)
5. Define the following static characteristics of instruments: i) Sensitivity, ii) Precision, iii) Dead zone, iv) Drift or v) Accuracy
6. Voltmeter having a sensitivity of 1000 ohm/volts read 100 V on its 150 V scale when connected across an unknown resistor in series with a Ammeter reading 5mA,
1. Draw Schering’s bridge and list applications.
2. Draw and explain Kelvin’s double bridge for unknown resistance measurement.
3. MegOhm Bridge for high resistance measurement
4. Draw Maxwell’s Bridge and list its applications. -
5. Draw a neat circuit diagram of LCR-Q meter & explain its operating principle
6. Wien Bridge is one of the AC bridges as shown in the Fig. 1 below. Derive conditions under which the bridge becomes balanced. Which quantity / parameter is it used to measure? (Given Circuit)
7. Draw the circuit diagram and explain the operation of bridge used to measure capacitance.
1. Draw block diagram of CRO and DSO. List important features and applications of DSO.
2. Explain frequency and phase measurement with oscilloscope.
3. Lissajous figures.
4. Explain the function of delay line in cathode ray oscilloscope (CRO) with neat diagram.
5. The block diagram of a general purpose cathode ray oscilloscope (CRO). is as shown in Fig. 20 2 below. Identify the blocks / elements numbered from 1 to 5 & describe their functionality. What is the use of trigger circuit / trigger generator in CRO ? Explain with neat diagram. (Given Diagram)
6. Explain how Lissajous patterns / figures are used for measurement of an unknown frequency & phase shift using a cathode ray oscilloscope (CRO). Determine the approximate phase shift of the Lissajous figure/pattern as shown in Fig. 3 below observed on CRO screen :(Given Diagram)
7. The diagram below in Fig. 5 shows a graph (spectrum) where a complex waveform having multiple signal components is displayed on a screen, with each individual signals having its own frequency (Hz) & its own amplitude (magnitude is as shown in mV). Which instrument is used to display it ? Describe its operation with a neat block diągram. (Given Diagram)
8. Compare dual slope and dual beam CRO. -
1. With a neat diagram, explain the principle of digital time measurement. -
2. From the diagram shown in Fig. 4 below, identify which type of instrument is being used and to measure which kind of electrical signal / input quantity. Describe the operation of that instrument with a neat block diagram. (Given Diagram)
3. Describe operating principle of harmonic distortion analyzer with a neat block diagram.
4. Draw a neat diagram and explain the operation of successive approximation type DVM.
5. With a neat diagram, explain the principle of digital time measurement.
1. Draw a neat diagram and explain the operation of successive approximation type DVM.
2. Explain LVDT with neat labelled diagram.
3. Selection criteria of transducers.
4. Strain gauges. -
6. Explain following approaches of temperature measurement: RTD, Thermistors and Thermocouples.
7. You have been asked to measure the displacement of a shaft, which is linearly attached to a 20 piston in a machine wherein the shaft has a rectilinear motion (straight line) going back & forth. Which transducer will you use for above application ? Describe its operation with a neat diagram
8. In a food processing unit, a highly acidic solution is stored in a storage tank where its level has to be continuously monitored round the clock. Your supervisor suggests that due to highly acidic nature of the solution, a non-contact transducer should be used for the level measurement Which transducer will you use for above application ? Describe its operation with a neat diagram
9. You are asked to measure the flow rate in a network of pipes that carry brine (a salt water solution). At first, it seems an easy task to use electromagnetic flow meters since brine solution being highly conductive, the output signal obtained is proportional to the flow rate. However on : close inspection, you find that due to several issues, including the shortage of space & the myriad arrangement of piping the flow transducer can be only installed in a vertical position. The plant supervisor also tells you ‘it should be such that' simply by looking at flow rate directly on its scale, he can adjust the valve manually & quickly so as to control it. Which flow transducer will you select for such an application ? Explain with a neat diagram.
10. A thermostat in a home heating system needs a temperature transducer to work between the temperature ranges of (Given any value). Being fully electronic in nature, the thermostat requirements are that the sensor should be as small as possible, be extremely light in weight & portable. Apart from being easily interfaced with electronic devices / circuits in the thermostat it should have a quick response to the variations in the ambient temperature & should be of cheaper cost. Out of the various temperature transducers, describe which is the best suited for above requirements. Explain its construction, operation & characteristics with a neat diagram.
11. Compare sensor and transducer.
12. In a food processing unit, a highly acidic solution is stored in a storage tank where its level has to be continuously monitored round the clock. Your supervisor suggests that due to highly acidic nature of the solution, a non-contact transducer should be used for the level measurement. Which transducer will you use for the above application? Describe its operation with a neat diagram.
1. Draw a neat labelled McLeod gauge system diagram.
2. Explain level measurement using differential pressure technique.
3. Explain in detail Dead weight testing with neat labelled diagram.
4. Turbine flow meter.
5. Electromagnetic flow meter.
7. Explain the operation of Pirani gauge for pressure measurement.