Tuesday, September 6, 2016
S.B. Roll No……
Duration 3 Hrs.
1. Fill in the blanks
a. Minimum number of diodes required for bridge rectifier is ________
b. In an insulator there is large __________ gap between valance and conduction bands.
c. Minority change carriers have opposite ______ from majority carriers.
d. In a transistor with normal bias, the emitter junction has __________ resistance.
e. The main disadvantage of a JFET is low _______ product.
f. JFET is also known as _______ device.
g. In a CB amplifier, the maximum efficiency could be ___________%
h. Linear transistor circuits always operate in ___________ region.
i. As compared to CB amplifier, the CE amplifier has ________ amplification.
j. The most widely used blas for linear transistor circuits is__________
Note: attempt any five questions.
a. What do you mean by ripples? How can the effect of ripples be reduced?
b. Give brief history of development of electronics
c. What is an ideal diode? Draw its characteristics?
d. Discuss the concept of input and output impedance in case of single stage amplifiers.
e. Explain the conversion of current source to voltage source to voltage source.
f. Differentiate between BJT and FET.
g. Explain Zenor diode as voltage regulator.
h. Differentiate between active and passive components
Note: Attempt any five questions.
3. Compare CB, CC & CE transistor configuration in detail.
4. Discuss the need of multistage amplifiers. Also explain different types of couplings used.
5. Explain RC coupled amplifier with suitable diagrams and frequency response.
6. Discuss various types of diodes in detail.
7. What is a transistor? Draw symbols of transistors. Also explain the mechanism of current flow.
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