Looking for 12106 Applied Electronics Old Question Papers of MSBTE Mumbai ? You can here download this question paper which exam was held in Winter 2014. Have a look at the question paper below and download it.
Paper University : Maharashtra State Board of Technical Education, Mumbai
Examination Year of Question Paper : Winter 2014
Scheme of the Question Paper : E
Course Name of the Question Paper : Diploma in Electrical Power System
Medium of Instructions of Question Paper : English
Question Paper Subject : Applied Electronics
Question Paper Subject code : 12106
Semester of Question Paper : Fourth
Time for Question Paper : 3 Hours
Marks Question Paper : 100
12106 MSBTE Mumbai
3 Hours / 100 Marks Seat No.
Instructions – (1) All Questions are Compulsory.
(2) Answer each next main Question on a new page.
(3) Illustrate your answers with neat sketches wherever necessary.
(4) Figures to the right indicate full marks.
(5) Assume suitable data, if necessary.
(6) Use of Non-programmable Electronic Pocket Calculator is permissible.
(7) Mobile Phone, Pager and any other Electronic Communication devices are not permissible in
Examination Hall.
1. a) Attempt any SIX of the following: 12
(i) Define Q factor in tunned amplifier.
(ii) State the effect of negative feed back on gain and B.W. of an amplifier.
(iii) Draw circuit of series negative clipper.
(iv) Define duty cycle and write equation for duty cycle of a stable multivibrator.
(v) Define the terms w.r.t. time base signal:
1) Sweep time
2) Sweep speed
(vi) State two necessities of testing and trouble shooting.
(vii) Draw i/p and o/p waveform of UJT relaxation oscillator.
(viii) Define multivibrator. State different types of multivibrator.
b) Attempt any TWO of the following: 8
(i) Draw a single tunned CE amplifier and describe its operation.
(ii) Draw a positive clamper circuit and explain it with neat waveform.
(iii) Draw constructional diagram of n-channal EMOSFET. Describe its working.
2. Attempt any FOUR of the following: 16
a) State the importance of quality factor and give its effect on B.W.
b) Draw circuit of biased positive dipper with appropriate waveform. Explain its working.
c) Draw circuit of self bias method of FET and explain.
d) What is meant by thermal run away? Why it should be avoided?
e) Compare class A, class B and class C w.r.t.:
(i) Position of Q point
(ii) Cross over distortion
(iii) Power Dissipation
(iv) Conduction angle of collector current.
f) Give two example each of visible testing and active testing.
3. Attempt any FOUR of the following: 16
a) Draw circuit of colpitt’s oscillator. Write its equation for frequency of oscillation also list the factors affecting frequency stability.
b) Draw circuit diagram of schmitt trigger. Draw the o/p waveform if i/p is triangular wave.
c) What is bootstrap technique? Draw circuit of bootstrap sweep generator.
d) Differentiate between JFET and MOSFET.
e) State and explain Barkhausen criteria.
f) How E-type MOSFET is used as a switch! Illustrate with diagram.
4. Attempt any TWO of the following: 16
a) Draw the single stage transistor amplifier circuit with voltage shunt negative feedback. Write its effect on voltage gain, B.W. harmonic distortion, noise, o/p resistance and i/p resistance.
b) Construct an astable multivibrator for R1 = R2 = 6.7 KΩ, C1 = C2 = 0.3nf. Determine the frequency of oscillation. If R is changed to 12 K Ω, what will be the frequency of oscillation?
c) Name the circuit that can generate triangular wave from a square wave. Explain its working with neat circuit diagram and wave form.
5. Attempt any FOUR of the following: 16
a) Draw V-I characteristics of JFET. Show ohmic region and breakdown region and saturation region.
b) List the connections used in negative feedback? Draw related block diagram.
c) Draw a neat circuit diagram of astable multivibrator and explain.
d) Draw a neat circuit diagram of time base generator which produces o/p without applying i/p. How the o/p frequency is changed?
e) Identify the circuit in Figure No. 1 and draw i/p and o/p waveform. State the use of the circuit.
Fig. No. 1 (See on the scanned copies provided below)
f) Why negative feedback is used in amplifier? Draw the labelled block diagram of series voltage feedback amplifier.
6. Attempt any FOUR of the following: 16
a) For a resonant circuit B.W. is constant comment on resonant frequency if:
(i) Q factor is doubled
(ii) Q factor is reduced to Q/3
b) In a simple UJT sweept circuit the values of R and C are 47 K Ω and 0.2 μf respectively. Determine the period and frequency of oscillation. Assume η = 0.56
c) Draw circuit diagram of Hartley Oscillator. In transistorised Hartley oscillator, the tank circuit with component C = 100 pf, L1 = 30mtt, and L2 = 1 × 10–8 H. Determine frequency of oscillation.
d) Describe working of schmitt trigger with neat circuit diagram.
e) Draw circuit diagram of R.C. integrator and differentiated with i/p and o/p waveform.
Paper University : Maharashtra State Board of Technical Education, Mumbai
Examination Year of Question Paper : Winter 2014
Scheme of the Question Paper : E
Course Name of the Question Paper : Diploma in Electrical Power System
Medium of Instructions of Question Paper : English
Question Paper Subject : Applied Electronics
Question Paper Subject code : 12106
Semester of Question Paper : Fourth
Marks Question Paper : 100
12106 MSBTE Mumbai
3 Hours / 100 Marks Seat No.
Instructions – (1) All Questions are Compulsory.
(2) Answer each next main Question on a new page.
(3) Illustrate your answers with neat sketches wherever necessary.
(4) Figures to the right indicate full marks.
(5) Assume suitable data, if necessary.
(6) Use of Non-programmable Electronic Pocket Calculator is permissible.
(7) Mobile Phone, Pager and any other Electronic Communication devices are not permissible in
Examination Hall.
1. a) Attempt any SIX of the following: 12
(i) Define Q factor in tunned amplifier.
(ii) State the effect of negative feed back on gain and B.W. of an amplifier.
(iii) Draw circuit of series negative clipper.
(iv) Define duty cycle and write equation for duty cycle of a stable multivibrator.
(v) Define the terms w.r.t. time base signal:
1) Sweep time
2) Sweep speed
(vi) State two necessities of testing and trouble shooting.
(vii) Draw i/p and o/p waveform of UJT relaxation oscillator.
(viii) Define multivibrator. State different types of multivibrator.
b) Attempt any TWO of the following: 8
(i) Draw a single tunned CE amplifier and describe its operation.
(ii) Draw a positive clamper circuit and explain it with neat waveform.
(iii) Draw constructional diagram of n-channal EMOSFET. Describe its working.
2. Attempt any FOUR of the following: 16
a) State the importance of quality factor and give its effect on B.W.
b) Draw circuit of biased positive dipper with appropriate waveform. Explain its working.
c) Draw circuit of self bias method of FET and explain.
d) What is meant by thermal run away? Why it should be avoided?
e) Compare class A, class B and class C w.r.t.:
(i) Position of Q point
(ii) Cross over distortion
(iii) Power Dissipation
(iv) Conduction angle of collector current.
f) Give two example each of visible testing and active testing.
3. Attempt any FOUR of the following: 16
a) Draw circuit of colpitt’s oscillator. Write its equation for frequency of oscillation also list the factors affecting frequency stability.
b) Draw circuit diagram of schmitt trigger. Draw the o/p waveform if i/p is triangular wave.
c) What is bootstrap technique? Draw circuit of bootstrap sweep generator.
d) Differentiate between JFET and MOSFET.
e) State and explain Barkhausen criteria.
f) How E-type MOSFET is used as a switch! Illustrate with diagram.
4. Attempt any TWO of the following: 16
a) Draw the single stage transistor amplifier circuit with voltage shunt negative feedback. Write its effect on voltage gain, B.W. harmonic distortion, noise, o/p resistance and i/p resistance.
b) Construct an astable multivibrator for R1 = R2 = 6.7 KΩ, C1 = C2 = 0.3nf. Determine the frequency of oscillation. If R is changed to 12 K Ω, what will be the frequency of oscillation?
c) Name the circuit that can generate triangular wave from a square wave. Explain its working with neat circuit diagram and wave form.
5. Attempt any FOUR of the following: 16
a) Draw V-I characteristics of JFET. Show ohmic region and breakdown region and saturation region.
b) List the connections used in negative feedback? Draw related block diagram.
c) Draw a neat circuit diagram of astable multivibrator and explain.
d) Draw a neat circuit diagram of time base generator which produces o/p without applying i/p. How the o/p frequency is changed?
e) Identify the circuit in Figure No. 1 and draw i/p and o/p waveform. State the use of the circuit.
Fig. No. 1 (See on the scanned copies provided below)
f) Why negative feedback is used in amplifier? Draw the labelled block diagram of series voltage feedback amplifier.
6. Attempt any FOUR of the following: 16
a) For a resonant circuit B.W. is constant comment on resonant frequency if:
(i) Q factor is doubled
(ii) Q factor is reduced to Q/3
b) In a simple UJT sweept circuit the values of R and C are 47 K Ω and 0.2 μf respectively. Determine the period and frequency of oscillation. Assume η = 0.56
c) Draw circuit diagram of Hartley Oscillator. In transistorised Hartley oscillator, the tank circuit with component C = 100 pf, L1 = 30mtt, and L2 = 1 × 10–8 H. Determine frequency of oscillation.
d) Describe working of schmitt trigger with neat circuit diagram.
e) Draw circuit diagram of R.C. integrator and differentiated with i/p and o/p waveform.
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