Bissoy.com
Doctors Medicines MCQs Q&A

Which of the following statements is correct for a system with gain margin close to unity or a phase margin close to zero?

Which of the following statements is correct for a system with gain margin close to unity or a phase margin close to zero? Correct Answer The system is highly oscillatory

The system is highly oscillatory or unstable as the value of phase margin must be finite for the stable system.

Related Questions

Which of the following statements is correct for a system with gain margin close to unity or a phase margin close to zero ?
A system with gain margin close to unity and phase margin close to zero is :
The network formed by resistors and capacitors for modifying the rate of change of gain and the phase shift is called a compensating network. Which of the following statements are not correct ? (A) The main purpose of a compensating network is to modify the performance of op-amp ciruit over the desired frequency range (B) There are two types of op-amps : internally compensated and externally compensated (C) 741 C is an externally compensated op-amp while 709 C is internally compensated op-amp (D) The phase lag and phase lead are most commonly used compensating networks in op-amps (E) Phase lag contributes a positive phase angle and phase lead a negative phase angle Choose the most appropriate answer from the options given below : 
Which of the following statements is/are correct with respect to a Scott-connected transformer? I. It can do 3-phase to 2-phase conversion II. It can do 2-phase to 3-phase conversion III. It can do 2-phase to 4-phase conversion IV. It can do 3-phase to 4-phase conversion
Assertion (A): The phase angle plot in Bode diagram is not affected by the variation in the gain of the system. Reason(R): The variation in the gain of the system has no effect on the phase margin of the system.
Two statements are given followed by four conclusions numbered I, II, III and IV. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements. Statements: I. Some forms are open ended. II. All close ended are forms. Conclusions: I. No open ended are forms. II. Some close ended are open ended. III. No forms are close ended. IV. All open ended are close ended.
Which of the following analysis is more convenient to see the effect of additional zero and pole in the system on the phase margin and the gain margin?
The critical value of gain for the system is 40. The system is operating at a gain of 20. The gain margin of the system is :
Two non-inverting amplifiers, with gain =1 and gain=20 are made using identical operational amplifiers. As compared to the unity gain amplifier, the amplifier with gain=20 has ___________
Consider the following statements: Routh-Hurwitz criterion gives A. Absolute stability B. The number of roots lying on the right half of the s-plane. C. The gain margin and phase margin. Which of these statement are correct?