Computer Programming MCQs

5739 MCQs  (Page 216 of 574)

Attempt Computer Programming MCQs Quiz
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
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A Wien bridge oscillator uses___________feedback?
A. Only positive
B. Only negative
C. Both positive and negative
D. None of the above
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The output impedance of an emitter follower is______________?
A. High
B. Very high
C. Almost zero
D. Low
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In an LC circuit, when the capacitor is maximum, the inductor energy is____________?
A. Minimum
B. Maximum
C. Half-way between maximum and minimum
D. None of the above
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The piezoelectric effect in a crystal is___________?
A. A voltage developed because of mechanical stress
B. A change in resistance because of temperature
C. A change in frequency because of temperature
D. None of the above
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An oscillator differs from an amplifier because it_____________?
A. Has more gain
B. Requires no input signal
C. Requires no d.c. supply
D. Always has the same input
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A second condition for oscillations is____________?
A. A gain of 1 around the feedback loop
B. No gain around the feedback loop
C. The attention of the feedback circuit must be one-third
D. The feedback circuit must be capacitive
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In a Wien-bridge oscillator, if the resistances in the positive feedback circuit are decreased, the frequency____________?
A. Remains the same
B. Decreases
C. Increases
D. Insufficient data
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When negative voltage feedback is applied to an amplifier, its voltage gain ____________?
A. Is increased
B. Is reduced
C. Remains the same
D. None of the above
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The Q of the crystal is of the order of____________?
A. 100
B. 1000
C. 50
D. More than 10,000
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Word of the Day
23 Jul
Aisle
a passage between rows of seats in a building such as a church or theatre, an aircraft, or train.
طویل تنگ راستہ، نشتوں کے درمیان راستہ

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