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Analog Circuits
Bipolar Junction Transistor
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FET and MOSFET
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Oscillators
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Operational Amplifier
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555 Timer
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Frequency Response
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Diodes
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Feedback Amplifier
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Power Amplifier
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1
GATE ECE 2002
MCQ (Single Correct Answer)
+2
-0.6
The circuit in the figure employs positive Feedback and is intended to generate sinusoidal oscillation. If at a frequency f$$_0$$, B(f)= $${{\Delta {V_f}(f)} \over {{V_0}(f)}} = {1 \over 6}\,\,\angle {0^0}$$ then to sustain oscillation at this frequency.
A
$${R_2}\, = \,5\,\,{R_1}$$
B
$${R_2}\, = \,6\,\,{R_1}$$
C
$${R_2}\, = {{{R_1}} \over 5}$$
D
$${R_2}\, = {{{R_1}} \over 6}$$
2
GATE ECE 2001
MCQ (Single Correct Answer)
+2
-0.6
The Oscillator circuit shown in the figure is GATE ECE 2001 Analog Circuits - Oscillators Question 5 English
A
Hartley Oscillator with $${f_{oscillation}}$$= 79.6 MHz
B
Colpitts Oscillator with $${f_{oscillation}}$$ =50.3 MHz
C
Hartley Oscillator with $${f_{oscillation}}$$= 159.2 MHz
D
Colpitts Oscillator with $${f_{oscillation}}$$=159.2 MHz
3
GATE ECE 1996
MCQ (Single Correct Answer)
+2
-0.6
Value of R in the oscillator shown in the given figure. So chosen that it just oscillates at an angular frequencies of' "$$\omega $$". The value of "$$\omega $$" and the required value of R will respectively be GATE ECE 1996 Analog Circuits - Oscillators Question 6 English
A
$${10^5}$$ rad/ sec, 2 $$ \times $$$${10^4}$$ $$\Omega $$
B
$$2 \times {10^4}$$ rad/ sec, $$2 \times {10^4}$$ $$\Omega $$
C
$$2 \times {10^4}$$ rad/ sec , $${10^5}\,\Omega $$
D
$${10^{5\,\,}}rad/\sec ,{10^5}\,\Omega $$
4
GATE ECE 1994
Subjective
+2
-0
Match the following.

GROUP-1
(A) Hartley
(B) Wein-bridge
(C) Crystal

GROUP-2
(1) Low frequency oscillator
(2) High frequency oscillator
(3) Stable frequency oscillator
(4) Relaxation oscillator
(5) Nagative Resistance oscillator

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Questions Asked from Marks 2
GATE ECE 2004 (1) GATE ECE 2003 (1) GATE ECE 2002 (1) GATE ECE 2001 (1) GATE ECE 1996 (1) GATE ECE 1994 (1)
GATE ECE Subjects
Signals and Systems
Network Theory
Control Systems
Digital Circuits
General Aptitude
Electronic Devices and VLSI
Analog Circuits
Engineering Mathematics
Microprocessors
Communications
Electromagnetics