STUPIDSID
1 (a)
With the help of circuit diagram, explain the accurate method of voltage divider bias.
8 M
1 (b)
For the emitter bias network determine:
IB ii) IC iii) VCE iv) VC v) Vh vi) VB vii) VBC viii) i/p resistance.
IB ii) IC iii) VCE iv) VC v) Vh vi) VB vii) VBC viii) i/p resistance.
4 M
1 (c)
Explain the gate characteristics of SCR.
8 M
2 (a)
With the help of neat diagram, describe the operation of N-channel depletion and MOSFET's.
8 M
2 (b)
Explain any three FET applications with circuit diagram.
6 M
2 (c)
Explain CMOS inverter operation.
6 M
3 (a)
Define: i) Responsivity ii) Response time iii) Noise equivalent power (NEP).
6 M
3 (b)
Explain the construction of an LCD.
8 M
3 (c)
Explain the cathode ray tube display.
6 M
4 (a)
Explain the Darlington amplifiers. Determine the value of input impedance and output impedance and gain using proper circuit diagram.
12 M
4 (b)
Determine the lower cut off frequency of the BJT amplifier shown in Fin Q4(b) given that h-parameters of the transistor are hie=5kΩ and hfe=100.
8 M
5 (a)
Describe the effect of negative feedback on gain.
6 M
5 (b)
Explain the series-series feedback with diagrammatic arrangement.
8 M
5 (c)
Write the advantages of negative feedback
i) Effect on bandwidth
ii) Effect on noise
iii) De-sensitivity of gain.
i) Effect on bandwidth
ii) Effect on noise
iii) De-sensitivity of gain.
6 M
6 (a)
Explain the astable multivibrator with waveform.
10 M
6 (b)
Explain Rc high pass circuit as differentiator.
5 M
6 (c)
A simple low-pass Rc network is feedback a 10 V step. If R=1KΩ and C=0.01μF, what will be the time period in which the output will change from 1.0 to 9.0V.
5 M
7 (a)
Explain buck regulator and inverting regulator, with neat diagram.
12 M
7 (b)
Explain the regulated power supply parameters:
i) Load regulation
ii) Line regulation
iii) Output impedance
iv) Ripple rejection factor.
i) Load regulation
ii) Line regulation
iii) Output impedance
iv) Ripple rejection factor.
8 M
8 (a)
Explain the absolute value circuit.
8 M
8 (b)
Explain with the neat diagram voltage current converter.
6 M
8 (c)
Explain the differential amplifier input range of Op-amp.
6 M
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