Bissoy.com
Doctors Medicines MCQs Q&A

The following circuit is provided. R1=R2 and C1=C2. What is the correct choice for sustained oscillation?

The following circuit is provided. R1=R2 and C1=C2. What is the correct choice for sustained oscillation? Correct Answer R4 = 2R3

For sustained oscillation, the gain required is given by AV = 3 Thus, in the above circuit 1+R4/R3 = 3 Thus R4 = 2R3 is the relation required.

Related Questions

Five friends wanted to go on holiday together to one nearby village, but they found it difficult to decide where to go. Jai and Mano both wanted to go to Pane, with Fene as their second choice. Kali wanted to go to Make, while Lily's first choice was Gute and Naz's was Tembe. Naz and Kali both put Fene as their second choice, while Lily gave it as her third choice, preferring Tembe as her second choice. Kali and Mano put Tembe as their third choice. Jai's third choice was Gute and Naz's was Make. They agreed to allocate three points for a 1st choice, two points for a 2nd choice and one point for a 3rd choice. The friends decided that they would not go anywhere which was not someone's first choice. Select the place they did go for holiday. 
Consider the following the statements 1. The oscillation of a particle with fundamental frequency under the influence of restoring force is defined as forced oscillations 2. The oscillation of a body whose amplitude goes on decreasing with time is defined as damped oscillation. 3. The oscillation in which a body oscillates under the influence of an external periodic force is known as forced oscillation. Which of the following statements is/are correct?
Assertion (A): An on-off controller gives rise to self-sustained oscillation in output. Reason (R): Location of a pair of poles on the imaginary axis gives to self-sustained oscillation is output.
Consider the following statement In damped oscillation, the amplitude of oscillation decreases exponentially due to damping forces. In damped oscillation, the frequency of the oscillation is slightly reduced.   Which of the following statement is correct?
Consider the following statements.
A Simple Pendulum is set into oscillation. Then,
1. the acceleration is zero when the bob passes through the mean position.
2. in each cycle the bob attains a given velocity twice.
3. both acceleration and velocity of the bob are zero when it reaches its extreme position during the oscillation.
4. the amplitude of oscillation of the simple pendulum decreases with time.
Which of these statements are correct?
Due to negligence of railway authorities, there was a major train accident. On hearing and seeing the news of the accident on TV, mother of one of the passengers travelling in the train sustained severe shock resulting in heart attack. She claimed damages from the railways for the shock she sustained. Which one of the following is the correct statement? Railway authority is not liable as:
Consider the following objectives of the law relating to damages:
1. Enrich the party who has sustained loss by breach of contract.
2. Punish the party who has committed the breach of contract.
3. Put the party, who sustained the loss, in the same position as if the contract has been performed.
Which of the statements given below is/are correct?
Oscillation can be classified as damped and sustained on the basis of varying.
In comparing the operation of the half-controlled 2-pulse circuit with that of the fully-controlled circuit, which of the following statements are evident? 1. Since half the thyristors are replaced by diodes, a half-controlled converter costs less than a fully-controlled converter. 2. Due to the freewheeling action with a half-controlled bridge-circuit power factor is improved in half-controlled converters. 3. The AC supply current is more distorted due to its zero periods with the half-controlled circuit, compared to a fully-controlled bridge circuit. Select the correct answer using the code given below :
Determine $${I_{\text{N}}}$$ for the circuit consisting of VS, R1, R2 and R3 shown in the given circuit.
Circuit Theorems and Conversions mcq question image