University Questions with Answers (Long Answered Questions)

University Questions with Answers (Long Answered Questions)

(Regulation 2008)

Dec.-09

Q. 1 Draw the neat circuit diagram of Colpitt's oscillator using BJT and explain its operation. [Section 10.10]     [8]

May-10

Q. 2 Draw and explain the operation of a Hartley oscillator. Derive the equation for fr and hje. [Section 10.9]       [16]

Dec.-10

Q. 3 Draw and explain the operation of a Hartley oscillator. Derive the equation for fr and hje. [Section 10.9]

May-11

Q. 4 What is crystal oscillator ? Draw diagram and explain the operation. [Section 10.13]

Dec.-ll

Q. 5 With a neat diagram, explain the construction and working of BJT RC phase shift oscillator. [Section 10.5]          [8]

Q.6 Draw and explain the operation of a Hartley oscillator. Derive the equation for fr and hje. [Section 10.9]

May-12

Q. 7 What is crystal oscillator ? Draw the circuit diagram and explain the operation. [Section 10.13] [12]

Dec.-12

Q. 8 With a neat diagram, explain the construction and working of BJT RC phase shift oscillator. [Section 10.5]          [8]

Q. 9 Draw the circuit diagram and explain the principle of operation of Hartley oscillator. [Section 10.9] [8]

May-13

Q.10 Draw and explain the operation of a Hartley oscillator. Derive the equation for fr and hje. [Section 10.9]       [16]

Dec.-13

Q.ll Draw the circuit diagram and explain the principle of operation of Hartley oscillator. [Section 10.9] [8]

May-14

Q.12 Derive the expression for the frequency of oscillations of RC phase shift oscillator. Hence obtain the expression of amplifier gain required for the oscillations. [Section 10.5]        [8] (Regulation 2013)

Dec.-14

Q.13 With a neat diagram, explain the construction and working of BJT RC phase shift oscillator. [Section 10.5]          [8]

Q.14 Draw the circuit diagram and explain the principle of operation of Hartley oscillator. [Section 10.9] [8]

May-15

Q.15 Explain the operation of Colpitis oscillator with neat circuit diagram. Also derive the expressions for the frequency of oscillation and the condition for maintenance of oscillation. [Section 10.10]     (16)

Q.16 Describe and explain the operation of the following oscillators.

i) Wien bridge oscillator [Section 10.6.2]    (5)

ii) Design a Wien bridge oscillator circuit to oscillate at a frequency of 20 kHz. [Refer Ex. 10.6.3]        (5)

iii) Crystal oscillator. [Sections 10.13.5, 10.13.6] (6)

May-16

Q.17 Draw and explain the RC-phase shift oscillator using BJT and also derive the condition for oscillation. [Section 10.5]        [12]

Dec.-16

Q.18 With neat diagram explain Wien - Bridge oscillator and derive an expression for frequency of oscillation. [Sections 10.6.1 and 10.6.2] [13]

May-17

Q.19 Explain with neat circuit diagram, the working of Hartley oscillator using transistor. Derive an expression for frequency of oscillation. [Sections 10.9.1 and 10.9.2]    [13]

Dec.-17

Q.20 Explain the working of Wien bridge oscillator. [Sections 10.6.2]        [5]

Q.21 Explain the working of a phase shift oscillator. Discuss its advantages and disadvantages [Section 10.5]       [8]

(Regulation 2017)

Dec.-18

Q.22 Explain the working of phase shift oscillator. [Section 10.5]     [5]