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
Related Mcqs:
- 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 - One condition for oscillation is_____________?
A. A phase shift around the feedback loop of 180o
B. A gain around the feedback loop of one-third
C. A phase shift around the feedback loop of 0o
D. A gain around the feedback loop of less than 1 - 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 - 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 - The application where one would most likely find a crystal oscillator is____________?
A. Radio receiver
B. Radio transmitter
C. AF sweep generator
D. None of the above - Hartley oscillator is commonly used in______________?
A. Radio receivers
B. Radio transmitters
C. TV receivers
D. None of the above - The crystal oscillator frequency is very stable due to___________of the crystal?
A. Rigidity
B. Vibrations
C. Low Q
D. High Q - The signal generator generally used in the laboratories is___________oscillator?
A. Wien-bridge
B. Hartely
C. Crystal
D. Phase shift - 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 - An oscillator employs___________feedback?
A. Positive
B. Negative
C. Neither positive nor negative
D. Data insufficient
