MU Analog Electronics - December 2015 Exam Question Paper

MU Instrumentation Engineering (Semester 3)
Analog Electronics
December 2015

Total marks: --
Total time: --

INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

Attempt any five:

1 (a) Calculate the CMRR (in dB) for the circuit measurements of V_D=1 mV, V_O-D=120 mV, and V_CM=1 mV, V_O-CM=20 μV.

5 M

1 (b) For an op-amp having a slew rate of SR=2.4 V/μs, what is the time taken for output to change from -15 V to +15V.

5 M

1 (c) Determine V_O for the following clamper circuit.

5 M

1 (d) Given I_DSS=16 mA and V_P=-5 V, sketch the transfer characteristics using the data points. Determine the value of I_D at V_GS=-3 V from the curve and compare it to the value determined using Shockley's equation.

5 M

1 (e) Crossover distortion behaviour is characteristic of Class A Power amplifier. State true or false with reason.

5 M

1 (f) Compare class A, class B and class C power amplifier based on,
i) Output waveform for collector current
ii) Linearity
iii) Distortion
iv) Efficiency

5 M

2 (a) Determine output voltage. Assume, V_B1=8V, V_B2=6V and input to be sine wave of 20 V peak.

8 M

2 (b) For the Zener diode network, determine V_L, V_R, I_Z and P_Z. Consider supply voltage of 16 v, zener voltage of 10 V, series resistor of 10 K and load resistance of 3 K.

8 M

2 (c) Explain working of bridge rectifier.

4 M

3 (a) Determine the levels of I_CQ and V_CEQ for the CE BJT amplifier with voltage-divider configuration. Consider R₁=82K, R₂=22 K, R_C=5.6 K, R_E=1.2 K, V_CC=18 v and β=50.

8 M

3 (b) Explain construction and working of D-MQSFET.

8 M

3 (c) What is harmonic distortion? Write the equation for total harmonic distortion.

4 M

4 (a) Determine the higher cut off frequencies for the given circuit diagram.

$C_G = 0.01 \ \mu F, \ \ C_C =0.5 \ \mu F, \ \ C_S=2 \ \mu F, \ \ R_{SIG}=10 \ k, \\ R_G=1 \ M, \ \ R_D \ 4, \ 7 \ k, \ \ R_S=1 \ k, \ \ R_L = 2.2 \ K, \ \ I_{DSS} = 8 \ mA, \ \ V_P=-4 \ V, \\ rd=\infty, \ V_{DD}=20 \ V, \ \ C_{gL}=2 \ pF, \ \ G_{gs}\ 4 \ pF \ \ C_{ds}=0.5 \ pF, \ \ C_{wi} = 5 \ pF, \\ C_{wo}=6 \ pF, \ \ Av=-3.$

10 M

4 (d) Derive equation for three Op Amp Instrumentation amplifier. Give advantages and applications of Instrumentation amplifier.

10 M

5 (a) Draw and explain a series voltage regulator.

10 M

5 (b) Explain integrator using Op Amp. Draw its frequency response. State disadvantages of basic integrator and how it is overcome in practical integrator circuit.

10 M

6 (a) Derive the expression for output voltage and hence determine the output voltage when V₁=-V₂=1V.

5 M

6 (b) Derive the expression for output voltage and hence calculate the output voltage if V₁=-0.2 V, V₂=0.1 V.

5 M

6 (c) Derive the expression for output voltage and draw the output voltage for this circuit with a sinusoidal input of 2.5mV.

5 M

6 (d) Derive the expression for output voltage and draw the output voltage for this circuit with a sinusoidal input of 120 μV.

5 M

More question papers from Analog Electronics

SPONSORED ADVERTISEMENTS