# Oscillators MCQs

Oscillators MCQs. Multiple Choice Questions and Answers on the topic of Oscillators in Electrical and Electronics Engineering and related subjects.

## An important limitation of a crystal oscillator is ?

A. Its low output
B. Its high Q
C. Less availability of quartz crystal
D. Its high output

A. Its low output

## ____________ is a fixed frequency oscillator ?

A. Phase-shift oscillator
B. Hartely-oscillator
C. Colpitt’s oscillator
D. Crystal oscillator

D. Crystal oscillator

A. 1
B. 01
C. 10
D. 02

D. 02

## In an LC oscillator, if the value of L is increased four times, the frequency of oscillations is ?

A. Increased 2 times
B. Decreased 4 times
C. Increased 4 times
D. Decreased 2 times

D. Decreased 2 times

A. Wien-bridge
B. Hartely
C. Crystal
D. Phase shift

A. Wien-bridge

## Quartz crystal is most commonly used in crystal oscillators because ?

A. It has superior electrical properties
B. It is easily available
C. It is quite inexpensive
D. None of the above

A. It has superior electrical properties

## A Wien bridge oscillator uses ___________ feedback ?

A. Only positive
B. Only negative
C. Both positive and negative
D. None of the above

C. Both positive and negative

## An oscillator converts ?

A. power into d.c. power
B. power into a.c. power
C. mechanical power into a.c. power
D. none of the above

B. power into a.c. power

## In an LC oscillator, the frequency of oscillator is ____________ L or C ?

A. Proportional to square of
B. Directly proportional to
C. Independent of the values of
D. Inversely proportional to square root of

D. Inversely proportional to square root of