1. Clapp oscillator is an

a) LC oscillator

b) RC oscillator

c) RL oscillator

d) Crystal oscillator

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2. Which type of feedback is used in clapp oscillator?

a) Positive feedback

b) Negative feedback

c) No feedback is used

d) Both positive and negative feedback

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3. When constructing variable frequency oscillator among clapp oscillator and colpitts oscillator which one is preferred?

a) Colpitts oscillator

b) Clapp oscillator

c) Both of them have equal preference

d) None of them preffered

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4. In clapp oscillator voltage is divided by using

a) Resistors

b) Capacitors

c) Inductors

d) Voltage dividing circuits are not used

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5. In a clapp oscillator with three capacitor C_{1}, C_{2}, C_{3}, C_{1} is used as upper capacitor in voltage divider, C_{2} is used as lower capacitor in voltage divider and C_{3} is the third capacitor. For perfect operation which of these capacitor should have minimum value?

a) C_{1}

b) C_{2}

c) C_{3}

d) All of them are equal

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_{3}is much smaller than C

_{1}and C 2as a result, the equivalent capacitance C is approximately equal to C

_{3}. For perfect operation C

_{3}should have minimum value.

6. In a clapp oscillator with three capacitor C_{1}, C_{2}, C_{3}, C_{1} is used as upper capacitor in voltage divider, C_{2} is used as lower capacitor in voltage divider and C_{3} is the third capacitor. The frequency of operation will be close to (Assume C_{1} parallel C_{2} is C_{3})

a)

b)

c)

d)

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_{3}and equation is similar to colpitts oscillator.

7. In a clapp oscillator with three capacitor C_{1}, C_{2}, C_{3}, C_{1} is used as upper capacitor in voltage divider, C_{2} is used as lower capacitor in voltage divider and C_{3} is the third capacitor. For perfect operation of clapp oscillator value of C_{3} should be

a) Equal to C_{1}

b) Equal to C_{2}

c) Equal to C_{1} parallel C_{2}

d) Very small

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_{3}should be C

_{1}parallel C

_{2}.

8. In a clapp oscillator with three capacitor C_{1}, C_{2}, C_{3}, C_{1} is used as upper capacitor in voltage divider, C_{2} is used as lower capacitor in voltage divider and C_{3} is the third capacitor. Inductance used in the circuit is L. The frequency of operation will be

a)

b)

c)

d)

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_{2}parallel C

_{3}.

9. In the following oscillator which one is more accurate

a) Colpitts oscillator

b) Clapp oscillator

c) Hartley oscillator

d) Simple LC oscillator

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10. What will be the clapp oscillator frequency if the C_{1}, C_{2}, C_{3} of clap oscillator is 1μF, 1μF, 2μF respectively and inductance is 1μH?

a) 0.1MHz

b) 0.4MHz

c) 1MHz

d) 4MHz