Bh.Questionbanks | Electronics
Brainheaters Questionbanks (Semester Exam) 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 your answers. (All Notes are Not Available) !!
1. Explain the following decimals in gray code form. (Given any Numerical)
2. Hamming code
3. Convert the following numbers as mentioned against them: Convert to decimal number, Hexadecimal form or Write in Two’s complement form. (Given any Numerical)
1. What are universal gates? Why are they called so? Implement XOR and XNOR function using all NAND gates.
2. Use K-Map to reduce the following function and then implement it by NOR gates.
(Given any Numerical)
3. State and prove De-Morgan’s theorem.
4. Minimize the following expression using Quine McCluskey technique.
(Given any Numerical)
5. Using Boolean algebra and De-Morgan’s theorem prove that: (Given any Numerical)
6. Simplify the expression (Given any Value) as much as possible.
1. Write truth table of half adder and write VHDL code for half adder. - Module no. 3 | (5M)
2. Differentiate between multiplexer and demultiplexer. - Module no. 3 | (5M)
3. Draw truth table and logic diagram of full Subtractor using half subtractors and gates. -
4. Design 1 digit BCD adder using IC 7438 and perform (Given any Numerical).
5. Implement the following function using 4:1 MUX and NAND gates.
(Given any Numerical)
6. VHDL code for full-adder.
7. Implement the following Boolean function using 8:1 multiplexer. (Given any Numerical)
8.Design a 2-bit comparator and implement using logic gates.
9. Design BCD adder using the integrated circuit 4 bit binary adders.
11. Encoder and decoder
13. Design 3 bit look ahead carry generator circuit.
14. Implement full adder using decoder having active low outputs and gates with fan in 2.
15. Explain parity circuits.
16. Design 8 bit comparator using 4 bit comparator IC 7485 and explain its operations.
1. Draw a circuit diagram of 2 input TTL NAND gate and explain the interfacing of TTL and CMOS.
2. Explain the characteristics parameters of logic families.
3. Compare TTL and CMOS logic families
4. Explain current and voltage parameters of logic families
1. Analyse the sequential state machine shown in the figure and obtain state diagram for the same. (Given any Diagram)
2. Obtain excitation table for JK flip-flop and convert JK flip-flop to T flip-flop
3. Master slave JK flip-flop.
4.Explain use of latch as a switch debouncer.
5.Convert the flip flop (I) JKMS to D flip flop (II) SR to T flip flop.
1. Explain advantages and drawbacks of synchronous counter
2. Design a MOD 10 asynchronous counter using T flip-flop. -
3. Design 4-bit Johnson counter using JK flip-flop. Explain its working using waveform.
4. Explain ring counter.
5. Analyze the clocked synchronous machine given below. Write excitation equations, excitation/transition table and state output table (Use state names A-D for Q1-Q2=00-11)
(Given any Diagram)
6. Explain IC 74194 working in detail with applications.
7. What is shift resistor? Explain any one type of shift resistor. Give its applications.
8. Explain working of 3-bit asynchronous counter with proper timing diagram
9. Write differences between synchronous and asynchronous counters.
EDC - I
1. For diodes, define forward voltage drop, maximum forward current, dynamic resistance, reverse saturation current and reverse breakdown voltage.
2. For diodes, discuss different types of junction breakdowns in detail.
3. What is DC load line of a diode, draw DC load line for the given circuit. (Given Circuit)
4. Define the followings related to diode: i) Cut-in voltage ii) Forward characteristics iii) Reverse characteristics iv) Diffusion capacitance v) Temperature effects.
5. Draw energy band diagram of PN Junction diode under zero bias and under forward bias.
6.What happens when PN Junction diode is forward biased, explain considering any suitable application.
7. What is Clamping circuit? Explain with neat Input and Output waveforms for Negative Clamping circuit.
1. With neat diagram, explain minority carrier distribution in npn transistor operating in forward active mode.
2. Explain working of BJT considering all possible modes of operation.
3. Draw output characteristics of BJT in CE configuration and state the importance of active region.
4. For the given BJT circuit, find Current gain, Voltage gain, Input resistance and Output resistance.
5.Determine ICq, VCEq, VC and VE for the BJT based given circuit.(Given Circuit)
6.Compare CB, CE and CC amplifiers.
7.Explain how CC configuration of BJT gives voltage gain less than 1.
8.Derive equation of input resistance, current gain and voltage gain for CC amplifier.
1. Explain two terminal MOS structure.
2. Compare enhancement type and depletion type MOSFET on the basis of their construction, working principle, characteristics and biasing.
3. A n-channel JFET with (Given any value),
i) If (Given any value), calculate the value of VGS.
ii) Calculate (Given any value)
iii) Calculate transconductance (Given any value) .
4. Discuss structure and working of MOSFET. Draw VI characteristics and explain.
5. Explain non-linear effects in MOSFET.
6. Derive the equation of threshold voltage V Th of n-channel enhancement MOSFET.
7. Neatly sketch all FET characteristics. Explain how various parameters can be determined from the characteristics. State drain current equation of FET
8. Explain construction, working and characteristics of D MOSFET.
9. Justify how current flows in E MOSFET even in absence of channel inside.
10. For the given E MOSFET circuit, determine Idq and VDSq. (Given Circuit)
11. For the given MOSFET amplifier circuit, find (Given any value) (Given Circuit) Given: (Given any value)
12. Explain with the help of construction that MOSFET gives more input resistance than JFET. -
13. For the given E MOSFET amplifier, determine IDq, VGSq and VDS. (Given Circuit)
14. For the voltage divider biased E MOSFET circuit, derive equation of Input Resistance, voltage gain and output resistance. (Given Circuit)
1. Sketch characteristics of PN junction solar cell and explain.
2. Explain operation of Photodiode and avalanche photodiode.
3. Sketch and explain tunnel diode characteristics. Explain applications of this diode.
4. Solar cell
5. How solar cells generate electricity, explain with the help of its structure
6. What is varactor diode? Also state its applications
1. Explain characteristics of Zener diode. Explain zener diode as a voltage regulator.
2. What is the use of filter in power supply? Draw the circuit diagram of C-filter and explain its operation.
3. What is the need of Filters? Explain L filter circuit.
1. How Zener diode is different from Normal diode?
2. Design single stage CE Amplifier for the following specifications:
(Given any value) Stability factor S=10, use transistor BC 147A.
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.
1. Find the current through (Given any value) resistor in given circuit. (Given Circuit)
2. Find the voltage at node 2 for the figure shown. (Given Circuit)
3. Find the current (Given any value) using superposition theorem. (Given Circuit)
4. Find the Thevenin's equivalent network (Given Circuit)
1. Find the equivalent inductance of the network shown. (Given Circuit)
2. Explain the graphical representation of series resonance circuit.
3. Find current through (Given any value) resistor. (Given Circuit)
4. For the network shown in figure, find the voltage across the capacitor. (Given Circuit)
5. Find Voltage across (Given any Numerical) resistor using mesh Analysis. (Given Circuit)
1. A series R-L circuit is shown in fig. has a constant voltage V applied at (Given any value). At what time does (Given any value). (Given Circuit)
2. For the network shown plot poles and zeros of the transfer impedance function. (Given Circuit)
3. Determine the expression for the current i(t). (Given Circuit)
4. In the network given the switch is changed from position a to b at (Given any value). Find out, (Given any value). (Given Circuit)
5.The wolves of primary constants of an open wire line per km are (Given any value). For a signal frequency of 1 KHz. Calculate (Given any value)
6. Find the expression for i(t). (Given Circuit)
7. Draw and explain transformed network in s domain for given circuits. Use current and voltage equation. (Given Circuit)
8. Find the circuit constants. (Given any Numerical)
9. Find poles and zeros of the impedance of the following network. (Given Circuit)
10. Determine the characteristic impedance and propagation constant of the Line at a frequency of 1kHz. (Given any Numerical)
1. Determine h parameters of the network given. (Given Circuit)
2. For the given network determine (Given any value). (Given Circuit)
3. The impedance parameters of two port network are (Given any Numerical) Compute the Y parameters
4. List the types of damping in a series R-L-C circuit and mention the condition for each damping.
5. Obtain Transmission parameters in terms of 'Z' Parameter.
1. Test whether F(s)= (Given any Numerical) is a positive real functions.
2. Check the whether the following polynomials are Hurwitz or not. Use continued fraction method.
(i) P(s) = (Given any Numerical) (ii) P(s) = (Given any Numerical)
3. Realise caur forms of the following LC impedance function.
Z(s) = (Given any Numerical)
4. Realise the following function in Foster- I and Foster-Il form.
Z(s) =(Given any Numerical)
5. What are conditions for rational function F(S) with real coefficient to be p.r.f?
6. Realise the following function in Cauer-I and Cauer-II forms
Z(S) = (Given any Numerical)
1. Design an m-derived T section high pass filter with a cut off frequency of (Given any value) KHz. Design impedance of (Given any value)
2. Explain various types of filters in circuit theory.
3. Find the characteristic impedance, cut off frequency and pass band for the network shown: (Given Circuit)
1. Solve Exact Differential (Given any Numerical) with (Given any value).
4. Find Laplace transform of (Given any Numerical)
1. Find the inverse Laplace of (Given any Numerical) using Convolution theorem.
1. Find the range Fourier sine series for f(x) = (Given any value)
2. Obtain Fourier series for f(x) (Given any Numerical)
Hence deduce that (Given any value)
3. Show that the set of limitations (Given any value) Is orthogonal over (Given any value). Hence construct orthonormal set of functions.
1. FInd the directional directive of (Given any Numerical) at the point (2,-1,1) in the direction of the vector i+2j+2k.
2. Show that (Given any Numerical), is a conservative field. Find its scalar potential and also find the work done by the force (Given any value) in moving a particle from (1,-2,1) to (3,1,4).
3. Prove that (Given any Numerical) Is irrotational and find scalar potential.
1. Using Gauss Divergence theorem, evaluate (Given any Numerical) and S is the cube bounded by (Given any Numerical).
2.Evaluate by Green’s theorem for (Given any Numerical) where C is the rectangle whose vertices are (Given any value)
7.Use Stokes theorem to evaluate (Given any Numerical) and S is the surface of hemisphere (Given any value) lying above the XY plane
1. Determine the constants a,b,c,d,e if f(z)= (Given any Numerical)is analytic.
2. Prove that Bessel Function. (Given any Numerical)
3. Show that under the transformation w= (Given any Numerical), real axis in the z-plane is mapped onto the circle |w|=1.
7.Show that (Given any Numerical) is a harmonic function. Also find its harmonic conjugate.
9.Find an analytic function f(z) whose imaginary part is (Given any Numerical)
12. Find the Bilinear transformation which maps the points z=1, i,-1 onto the points w=i, 0-i.
13. Find the orthogonal trajectories of the curves (Given any Numerical) where (Given any value) is a real constant in XY plane.
14. If (Given any Numerical) find analytic function whose real part is u.
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