Colpitts Oscillator-1 Online Exam Quiz
Colpitts Oscillator-1 GK Quiz. Question and Answers related to Colpitts Oscillator-1. MCQ (Multiple Choice Questions with answers about Colpitts Oscillator-1
Active element used in Colpitts oscillator is ___
Options
A : Cell
B : Voltage regulator
C : Diode
D : Transistor
Capacitive circuit configuration in Colpitts oscillator improves ___
Options
A : Bulkiness
B : Frequency stability
C : Impedance
D : Appearance
Colpitts oscillator uses which type of feedback __
Options
A : Negative feedback
B : Positive feedback
C : No feedback
D : Positive or Negative depends upon frequency
If C1 and C2 are the capacitance used in Colpitts oscillator the effective capacitance in the equation of frequency calculation is equal to ___
Options
A : (??C1?C2)/(C1+C2)
B : 3 (C1?C2)/(C1+C2)
C : (C1?C2)/(2?(C1+C2))
D : (C1?C2)/(C1+C2)
Resistors are provided in Colpitts circuit is to __
Options
A : Provide high impedance to oscillation
B : Bias transistor
C : Provide stability for tank circuit
D : increase impedance for oscillation
RFC choke is placed in Colpitts oscillator instead of resistor is to provide ___
Options
A : High impedance to DC
B : High resistance to DC
C : Low resistance to DC
D : Less bulkiness
RFC choke present in Collpitts oscillatory circuit is for ___
Options
A : High reactance to oscillation
B : Low reactance to oscillation
C : Variable reactance to oscillation
D : Biasing to oscillation
The frequency of Colpitts oscillator is expressed as __^ (Where L is inductance and C is the effective capacitance)
Options
A : 1/(4??LC)
B : 1/(2??LC)
C : 1/(3??LC)
D : ?3/(2??LC)
To ensure constant feedback which method is used in Colpitts oscillator __
Options
A : Gang tuning
B : Using same capacitor
C : No method is used
D : Voltage divider always gives constant feedback
Which configuration of transistor amplifier is used for Colpitts oscillator?
Options
A : Common emitter amplifier
B : Common collector amplifier
C : Common base amplifier
D : Combination of both common emitter and common collector
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