Linear Integrated Circuits Question Bank j4g46
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DEEPAK SANT Asst. Prof. - ECE
SHRINATHJI INSTITUTE OF TECHNOLOGY & ENGINEERING, NATHDWARA DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING
QUESTION BANK SUBJECT: - 5EC2 LINEAR INTEGRATD CIRCUITS PART-A [IMPORTANT QUESTIONS] UNIT-I OPERATINOAL AMPLIFIERS
Que:-1. What is an op-amp? List the four basic building blocks of an op-amp. Que:-2.What is the three operating range of IC? Que:-3.Define the following op-amp parameters:(1) CMRR (2) input offset voltage, (3) Slew rate ( Bias current) Que:-4.What is the characteristics of an ideal op-amp? Que:-5 List three open-loop op-amp configurations. Que:-6 List of ideal characteristics of an op-amp.
DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
Que:-7 Compare inverting and non-inverting amplifier.
PART-A [IMPORTANT QUESTIONS] UNIT-II OPERATINOAL AMPLIFIERS APPLICATIONS
Que:-1. What is an active integrator? With neat circuit diagram explain the working of an active integrator.\ Que:-2. Explain the working of a summing integrator. Que:-3. What are the limitations of an ideal active differentiator? Que:-4. Explain the working of a RC phase shift oscillator. Que:-5. Write short notes– on: (1) (2) (3) (4)
Triangular wave generator Astable multivibrator using op-amp RC phase shift oscillator using op-amp Wien bridge oscillator using op-amp
DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
UNIT-III ACTIVE FILTERS
Que:-1. Define a filter. How filters are classified? Que:-2. Write a note on “Active Filters”. Que:-3.What is a notch filter? Explain its operation with the help of the neat circuit diagram. Que:-4. What is an all filter? Explain its operation and application areas. Que:-5.Derive the expression for the phase shift produced by an all filter. Que:-6.Design low filters at a cut-off frequency of 1 kHz with a band gain of 2. Que:-7. Design high filter at a cut-off frequency of 1 kHz with a band gain of 2.plot its frequency response. Que:-8.What is band and stop band for a filter? Que:-9. What is VCO? Explain its use in PLL for get constant frequency output
UNIT-IV PHASE-LOCKED LOOPS Que:-1.Explain the working of PLL using appropriate block diagram and explain any one application of the same. DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
Que:-2.Draw and explain the transfer characteristics of PLL. Que:-3.Give the typical electrical parameters for 565 PLL. Que:-4.Derive the expression for lock range & Capture range of PLL IC 565. Que:-5.Write a short notes on:1. 2. 3. 4. 5.
Phase shifter. Tracking filter. Signal synchronizer. Pull in time LM 565 PLL
Que:-6.List the basic building blocks of the discrete PLL. Que:-7.Write applications of PLL.
PART-A [IMPORTANT QUESTIONS] UNIT V-LINEAR IC’S
Que:-1.What are the limitations of the basic log amplifier? Que:-2.What is a two quadrant multiplier. Que:-3.Explain the working a four quadrant multiplier. DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
Que:-4.Explain a basic multiplier and its characteristics. Que:-5.Compare series and shunt regulator. Que:-6.What are the limitations of linear regulators? Que:-7.Explain the operation of basic series regulator and shunt regulator circuit. Que:-8.Write short notes on:1. Three terminal fixed regulator. 2. Switching regulator 3. Linear IC regulator
DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
PART-B [NUMERICALS] UNIT-I OPERATINOAL AMPLIFIERS Que:1 Determine the output voltage of a differential amplifier for the input voltage of 300µV and 240µV.The differential gain of the amplifier is 5000 and the value of the CMRR is (1) 100 and (2)10 5. Que:2 If the base currents for the emitter coupled transistors of a differential amplifier are 18µA and 22 µA, determine:(1) Input bias current (2) Input offset current for an op-amp. Que: 3.An op-amp operates as a unity gain buffer with 3V (peak to peak) input is 12V.Determine slew rate and Maximum possible frequency of input voltage can be applied to get undistorted output.
DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
PART-B [NUMERICALS] UNIT-II OPERATINOAL AMPLIFIERS APPLICATIONS
Que:1 .Design a practical integrator circuit with a d.c. gain of 10, to integrate a squrewave of 10 kHz. Que:2 In summing amplifier (in inverting mode) the input signals are 3V, 2V and 1V and their input resistors are R1 =R2=R3 =3KΩ.Its resistor is 1KΩ.Find V0 of an ideal op-amp. Que:3 Design a practical differentiator circuit that will differentiate an input signal with the f max =150Hz. Que:4 For the RC phase shift oscillator assume the suitable value of capacitor and calculate vale of R the frequency of 1 kHz. Que:5 Design the phase shift oscillator to have output frequency of 500 Hz. Use ± 12 V supply. Que:6 Design the Wien bridge oscillator circuit to have output frequency of 10 kHz. PART-B [NUMERICALS] UNIT-III ACTIVE FILTERS DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
Que:1
Find the modulation index and the max. Deviation of the FM wave represented by the voltage equation e=12sin (6*108t+5sin1250t). What power will the FM wave dissipate in a 10Ω ?
Que:2
In the basic low filter R=158 k,C=1 nf.Find the output voltage Vo of the filter when an input signal of 1V peak-peak is applied to it at: (i) 100 Hz frequency (10000 Hz).
Que:3
Calculate the value of Q factor for band filter with fL=1 kHz and that this filter is wide band filter.
Que:4
Design a wein bridge oscillator for generate oscillations in a local oscillator, operating at IF frequency = 935 KHz. Let the signal frequency is 65 KHz.
Que:5
Design a wide band reject filter having fH =400 Hz and fL =2 kHz with a band gain of 2. PART-B [NUMERICALS] UNIT-IV PHASE-LOCKED LOOPS
Que:1 A PLL has running frequency of 500 kHz and bandwidth of the low filter is 10 kHz. Will the loop acquire lock for an input signal of 600 kHz? Justify your answer. Assume the phase detector produce sum and difference frequency components. DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
Que:2 Design a PLL circuit 565 IC to get: 1. Free running frequency = 4.5 kHz 2. Lock range = 2 kHz. 3. Capture range – 100 Hz. Assume supply voltages of
10 V are available. Show the circuit diagram with all component values.
Que: 3 Calculate output frequency f0, lock range fL and capture range is the effect of filter capacitor on capture range?
fC of PLL if RT =1 K, CT =0.1 µF. What
PART-B [NUMERICALS] UNIT V-LINEAR IC’S Que:1 Design a timer, which should turn ON heater immediately after pressing a push and should hold heater in ‘ON-state’ for 5 seconds. Que:2 Draw the circuit diagram of timer using IC 555.Calculate the component values if the controlled door should remain open for 15 sec after a trigger signal is received. The d.c. voltage available is either 10 or 15 volts. Que:3 A 555 timer is configured to run is astable mode with RA =4 k and RB =4 k and c=0.01 µF.Determine the frequency of the output and duty cycle.
DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
Que:4 Design a astable multivibrator which will flash the electric bulb such that its ON time will be 3 seconds and off time will be 1 second.
Que:5 A voltage regulator data sheet includes a load regulation of the regulator as 3 mV while its max load voltage is 15 V.Calculate its percentage load regulation.
PART-C [PREVIOUS YEARS QUESTIONS] UNIT 1: OPRATIONALS AMPLIFIERS
Que:1
Define and explain the following op-amp parameters. (a) CMRR (b) Slew Rate (c) Input offset voltage (d) Bias current.
Que:2
Explain the use of op-amp as a voltage follower.
Que:3
Write a short note a comparator circuits.
Que:4
Explain the use of op-amp as: (1) An inverting amplifier (2) A non inverting amplifier. DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
(3) An adder (4) Differential amplifier. Que:5
Explain the zero crossing detectors with waveforms.
Que:6
Draw the circuit of dual input balanced output differential amplifier and perform its d.c. analysis.
Que:7
List and explain all the basic building block of IC op-amp.
Que:8
Find the expression for CMRR for an emitter coupled differential amplifier in term of emitter resistance Re.Discuss the role of Re for improve the linearity in transfer characteristic. Show the effects of Re variation on transfer characteristics.
Que:9
Briefly describe the feature as important electrical characteristics of type 741 op-amp.
Que:10 Write short notes on differential amplifier. PART-C [PREVIOUS YEARS QUESTIONS] UNIT 2: OPRATIONALS AMPLIFIERS APPLICATIONS
DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
Que:-1. Draw the circuit of ideal integrator and explain its working. Explain the practical problems with ideal integrator and explain the method by which we are able to overcome with these problems. Draw the frequency response of ideal and practical integrator and explain it. Que: 2.Give the complete scheme (circuit diagram) for generating triangular wave. Suggest the modification so that same circuit can be used for Saw tooth wave oscillator. Que: 3.Draw the circuit diagram of Wien bridge oscillator and find expression for frequency of oscillation. Que: 4. In RC phase shift oscillator show frequency of oscillation:fo = 1/2πRC√6 Que: 5(a).Draw Wein bridge oscillator using op-amp. How that frequency of oscillation fo = 1/2πRC and RF=2R1. 5(b).Is the bridge balanced when oscillation taken place? Explain with reason. Que: 6.Describe the working of a regenerative comparator along with suitable schematic diagram. DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
Que: 7.Explain the working of following circuits: (a) Voltage to frequency convertor. (b) Frequency to voltage convertor. Que: 8.With the help of circuit diagram explain working of a saw tooth wave generator. How is a saw tooth waveform different from a triangular waveform? Que: 9.Explain the working of a triangular wave generator and derive the expression for frequency of oscillations. Que: 10 Write short note on quadrature oscillator. PART-C [PREVIOUS YEARS QUESTIONS] UNIT 3: ACTIVE FILTERS
Que:1
Compare the characteristics of Butter-worth and Chabyster filter.
Que:2
Draw the circuit for second-order LPF in sallen and key form and determine the expression for the transfer function. DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
Que:3
Design second order Butter –worth low- filter having upper cut of frequency 1 KHz.
Que:4
Draw the circuit diagram of Twin-T notch narrow band reject filter derive the expression for cut of frequencies.
Que:5
Design a wein bridge oscillator for generate oscillations in a local oscillator, operating at IF frequency = 935 KHz. Let the signal frequency is 65 KHz.
Que:6
What is VCO? Explain its use in PLL for get constant frequency output.
Que:7
Give the complete scheme for generate saw tooth wave generator.
Que:8
Write shot notes on band filter.
Que:9
Write short on Second Order Low Filter.
Que:10 Draw the suitable circuit diagram of the following application of IC741:Band Reject Filter. PART-C [PREVIOUS YEARS QUESTIONS] UNIT 4: PHASE-LOCKED LOOPS
DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
Que:1
With the help of the of block diagram explain the working of PLL.For the first order PLL show that The lock ranges and capture range are approximately equal.
Que:2
Differentiate between lock ranges and capture range. Derive the expression for lock range.
Que:3
Explain the application of PLL as(1) FM Detector (2) FSK Demodulator (3) Phase Shifter
Que:4
Explain the use of PLL for FM detector show its limitation on maximum frequency deviation in of capture range of PLL.
Que:5
Explain applications of PLL.
Que:6
Define the following: (1) Capture range (2) Lock range (3) Pull in time
Que:7
Write short notes on LM 565 PLL. DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
Que:8
Write short notes on PLL as frequency synthesizer.
Que:9
Using block diagram, explain operation of PLL?
Que:10 Write short notes on PLL as a tracking filter. PART-C [PREVIOUS YEARS QUESTIONS] UNIT 5: LINEAR IC’S Que:1
Draw and explain the working of Schmitt trigger.
Que:2
Explain the working of Gilbert multiplier cell.
Que:3
Draw the circuit diagram for use IC-555 as astable multivibrator.
Que:4
Differentiate between positive and negative voltage regulator using one example.
Que:5
Write short notes on “Four quadrant multiplier and its applications.”
Que:6
Explain astable multivibrator using IC555.Draw waveforms of output.
Que:7
Write short on three terminal fixed regulators.
Que:8
What are the tree terminal voltage regulators? How do we get adjustable output them.
Que:9
Describe the working of a monostable multivibrator using IC 555 along with internal diagram and wave form at various pins. DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
Que:10 Why do you require a regulator when you design a AC to Converter (power supply)?Explain.
DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
SHRINATHJI INSTITUTE OF TECHNOLOGY & ENGINEERING, NATHDWARA DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING
QUESTION BANK SUBJECT: - 5EC2 LINEAR INTEGRATD CIRCUITS PART-A [IMPORTANT QUESTIONS] UNIT-I OPERATINOAL AMPLIFIERS
Que:-1. What is an op-amp? List the four basic building blocks of an op-amp. Que:-2.What is the three operating range of IC? Que:-3.Define the following op-amp parameters:(1) CMRR (2) input offset voltage, (3) Slew rate ( Bias current) Que:-4.What is the characteristics of an ideal op-amp? Que:-5 List three open-loop op-amp configurations. Que:-6 List of ideal characteristics of an op-amp.
DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
Que:-7 Compare inverting and non-inverting amplifier.
PART-A [IMPORTANT QUESTIONS] UNIT-II OPERATINOAL AMPLIFIERS APPLICATIONS
Que:-1. What is an active integrator? With neat circuit diagram explain the working of an active integrator.\ Que:-2. Explain the working of a summing integrator. Que:-3. What are the limitations of an ideal active differentiator? Que:-4. Explain the working of a RC phase shift oscillator. Que:-5. Write short notes– on: (1) (2) (3) (4)
Triangular wave generator Astable multivibrator using op-amp RC phase shift oscillator using op-amp Wien bridge oscillator using op-amp
DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
UNIT-III ACTIVE FILTERS
Que:-1. Define a filter. How filters are classified? Que:-2. Write a note on “Active Filters”. Que:-3.What is a notch filter? Explain its operation with the help of the neat circuit diagram. Que:-4. What is an all filter? Explain its operation and application areas. Que:-5.Derive the expression for the phase shift produced by an all filter. Que:-6.Design low filters at a cut-off frequency of 1 kHz with a band gain of 2. Que:-7. Design high filter at a cut-off frequency of 1 kHz with a band gain of 2.plot its frequency response. Que:-8.What is band and stop band for a filter? Que:-9. What is VCO? Explain its use in PLL for get constant frequency output
UNIT-IV PHASE-LOCKED LOOPS Que:-1.Explain the working of PLL using appropriate block diagram and explain any one application of the same. DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
Que:-2.Draw and explain the transfer characteristics of PLL. Que:-3.Give the typical electrical parameters for 565 PLL. Que:-4.Derive the expression for lock range & Capture range of PLL IC 565. Que:-5.Write a short notes on:1. 2. 3. 4. 5.
Phase shifter. Tracking filter. Signal synchronizer. Pull in time LM 565 PLL
Que:-6.List the basic building blocks of the discrete PLL. Que:-7.Write applications of PLL.
PART-A [IMPORTANT QUESTIONS] UNIT V-LINEAR IC’S
Que:-1.What are the limitations of the basic log amplifier? Que:-2.What is a two quadrant multiplier. Que:-3.Explain the working a four quadrant multiplier. DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
Que:-4.Explain a basic multiplier and its characteristics. Que:-5.Compare series and shunt regulator. Que:-6.What are the limitations of linear regulators? Que:-7.Explain the operation of basic series regulator and shunt regulator circuit. Que:-8.Write short notes on:1. Three terminal fixed regulator. 2. Switching regulator 3. Linear IC regulator
DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
PART-B [NUMERICALS] UNIT-I OPERATINOAL AMPLIFIERS Que:1 Determine the output voltage of a differential amplifier for the input voltage of 300µV and 240µV.The differential gain of the amplifier is 5000 and the value of the CMRR is (1) 100 and (2)10 5. Que:2 If the base currents for the emitter coupled transistors of a differential amplifier are 18µA and 22 µA, determine:(1) Input bias current (2) Input offset current for an op-amp. Que: 3.An op-amp operates as a unity gain buffer with 3V (peak to peak) input is 12V.Determine slew rate and Maximum possible frequency of input voltage can be applied to get undistorted output.
DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
PART-B [NUMERICALS] UNIT-II OPERATINOAL AMPLIFIERS APPLICATIONS
Que:1 .Design a practical integrator circuit with a d.c. gain of 10, to integrate a squrewave of 10 kHz. Que:2 In summing amplifier (in inverting mode) the input signals are 3V, 2V and 1V and their input resistors are R1 =R2=R3 =3KΩ.Its resistor is 1KΩ.Find V0 of an ideal op-amp. Que:3 Design a practical differentiator circuit that will differentiate an input signal with the f max =150Hz. Que:4 For the RC phase shift oscillator assume the suitable value of capacitor and calculate vale of R the frequency of 1 kHz. Que:5 Design the phase shift oscillator to have output frequency of 500 Hz. Use ± 12 V supply. Que:6 Design the Wien bridge oscillator circuit to have output frequency of 10 kHz. PART-B [NUMERICALS] UNIT-III ACTIVE FILTERS DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
Que:1
Find the modulation index and the max. Deviation of the FM wave represented by the voltage equation e=12sin (6*108t+5sin1250t). What power will the FM wave dissipate in a 10Ω ?
Que:2
In the basic low filter R=158 k,C=1 nf.Find the output voltage Vo of the filter when an input signal of 1V peak-peak is applied to it at: (i) 100 Hz frequency (10000 Hz).
Que:3
Calculate the value of Q factor for band filter with fL=1 kHz and that this filter is wide band filter.
Que:4
Design a wein bridge oscillator for generate oscillations in a local oscillator, operating at IF frequency = 935 KHz. Let the signal frequency is 65 KHz.
Que:5
Design a wide band reject filter having fH =400 Hz and fL =2 kHz with a band gain of 2. PART-B [NUMERICALS] UNIT-IV PHASE-LOCKED LOOPS
Que:1 A PLL has running frequency of 500 kHz and bandwidth of the low filter is 10 kHz. Will the loop acquire lock for an input signal of 600 kHz? Justify your answer. Assume the phase detector produce sum and difference frequency components. DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
Que:2 Design a PLL circuit 565 IC to get: 1. Free running frequency = 4.5 kHz 2. Lock range = 2 kHz. 3. Capture range – 100 Hz. Assume supply voltages of
10 V are available. Show the circuit diagram with all component values.
Que: 3 Calculate output frequency f0, lock range fL and capture range is the effect of filter capacitor on capture range?
fC of PLL if RT =1 K, CT =0.1 µF. What
PART-B [NUMERICALS] UNIT V-LINEAR IC’S Que:1 Design a timer, which should turn ON heater immediately after pressing a push and should hold heater in ‘ON-state’ for 5 seconds. Que:2 Draw the circuit diagram of timer using IC 555.Calculate the component values if the controlled door should remain open for 15 sec after a trigger signal is received. The d.c. voltage available is either 10 or 15 volts. Que:3 A 555 timer is configured to run is astable mode with RA =4 k and RB =4 k and c=0.01 µF.Determine the frequency of the output and duty cycle.
DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
Que:4 Design a astable multivibrator which will flash the electric bulb such that its ON time will be 3 seconds and off time will be 1 second.
Que:5 A voltage regulator data sheet includes a load regulation of the regulator as 3 mV while its max load voltage is 15 V.Calculate its percentage load regulation.
PART-C [PREVIOUS YEARS QUESTIONS] UNIT 1: OPRATIONALS AMPLIFIERS
Que:1
Define and explain the following op-amp parameters. (a) CMRR (b) Slew Rate (c) Input offset voltage (d) Bias current.
Que:2
Explain the use of op-amp as a voltage follower.
Que:3
Write a short note a comparator circuits.
Que:4
Explain the use of op-amp as: (1) An inverting amplifier (2) A non inverting amplifier. DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
(3) An adder (4) Differential amplifier. Que:5
Explain the zero crossing detectors with waveforms.
Que:6
Draw the circuit of dual input balanced output differential amplifier and perform its d.c. analysis.
Que:7
List and explain all the basic building block of IC op-amp.
Que:8
Find the expression for CMRR for an emitter coupled differential amplifier in term of emitter resistance Re.Discuss the role of Re for improve the linearity in transfer characteristic. Show the effects of Re variation on transfer characteristics.
Que:9
Briefly describe the feature as important electrical characteristics of type 741 op-amp.
Que:10 Write short notes on differential amplifier. PART-C [PREVIOUS YEARS QUESTIONS] UNIT 2: OPRATIONALS AMPLIFIERS APPLICATIONS
DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
Que:-1. Draw the circuit of ideal integrator and explain its working. Explain the practical problems with ideal integrator and explain the method by which we are able to overcome with these problems. Draw the frequency response of ideal and practical integrator and explain it. Que: 2.Give the complete scheme (circuit diagram) for generating triangular wave. Suggest the modification so that same circuit can be used for Saw tooth wave oscillator. Que: 3.Draw the circuit diagram of Wien bridge oscillator and find expression for frequency of oscillation. Que: 4. In RC phase shift oscillator show frequency of oscillation:fo = 1/2πRC√6 Que: 5(a).Draw Wein bridge oscillator using op-amp. How that frequency of oscillation fo = 1/2πRC and RF=2R1. 5(b).Is the bridge balanced when oscillation taken place? Explain with reason. Que: 6.Describe the working of a regenerative comparator along with suitable schematic diagram. DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
Que: 7.Explain the working of following circuits: (a) Voltage to frequency convertor. (b) Frequency to voltage convertor. Que: 8.With the help of circuit diagram explain working of a saw tooth wave generator. How is a saw tooth waveform different from a triangular waveform? Que: 9.Explain the working of a triangular wave generator and derive the expression for frequency of oscillations. Que: 10 Write short note on quadrature oscillator. PART-C [PREVIOUS YEARS QUESTIONS] UNIT 3: ACTIVE FILTERS
Que:1
Compare the characteristics of Butter-worth and Chabyster filter.
Que:2
Draw the circuit for second-order LPF in sallen and key form and determine the expression for the transfer function. DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
Que:3
Design second order Butter –worth low- filter having upper cut of frequency 1 KHz.
Que:4
Draw the circuit diagram of Twin-T notch narrow band reject filter derive the expression for cut of frequencies.
Que:5
Design a wein bridge oscillator for generate oscillations in a local oscillator, operating at IF frequency = 935 KHz. Let the signal frequency is 65 KHz.
Que:6
What is VCO? Explain its use in PLL for get constant frequency output.
Que:7
Give the complete scheme for generate saw tooth wave generator.
Que:8
Write shot notes on band filter.
Que:9
Write short on Second Order Low Filter.
Que:10 Draw the suitable circuit diagram of the following application of IC741:Band Reject Filter. PART-C [PREVIOUS YEARS QUESTIONS] UNIT 4: PHASE-LOCKED LOOPS
DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
Que:1
With the help of the of block diagram explain the working of PLL.For the first order PLL show that The lock ranges and capture range are approximately equal.
Que:2
Differentiate between lock ranges and capture range. Derive the expression for lock range.
Que:3
Explain the application of PLL as(1) FM Detector (2) FSK Demodulator (3) Phase Shifter
Que:4
Explain the use of PLL for FM detector show its limitation on maximum frequency deviation in of capture range of PLL.
Que:5
Explain applications of PLL.
Que:6
Define the following: (1) Capture range (2) Lock range (3) Pull in time
Que:7
Write short notes on LM 565 PLL. DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
Que:8
Write short notes on PLL as frequency synthesizer.
Que:9
Using block diagram, explain operation of PLL?
Que:10 Write short notes on PLL as a tracking filter. PART-C [PREVIOUS YEARS QUESTIONS] UNIT 5: LINEAR IC’S Que:1
Draw and explain the working of Schmitt trigger.
Que:2
Explain the working of Gilbert multiplier cell.
Que:3
Draw the circuit diagram for use IC-555 as astable multivibrator.
Que:4
Differentiate between positive and negative voltage regulator using one example.
Que:5
Write short notes on “Four quadrant multiplier and its applications.”
Que:6
Explain astable multivibrator using IC555.Draw waveforms of output.
Que:7
Write short on three terminal fixed regulators.
Que:8
What are the tree terminal voltage regulators? How do we get adjustable output them.
Que:9
Describe the working of a monostable multivibrator using IC 555 along with internal diagram and wave form at various pins. DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
DEEPAK SANT Asst. Prof. - ECE
Que:10 Why do you require a regulator when you design a AC to Converter (power supply)?Explain.
DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING, SITE - Nathdwara
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