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A discrete-time all-pass system has two of its poles at 0.25

A discrete-time all-pass system has two of its poles at 0.25 Correct Answer [ <p><span>A. It has two more poles at 0.5 <p><span>B. It is stable only when the impulse response is two-sided

Related Questions

A train of length 549 m traveling at a speed of 70 km/hr crosses 30 poles, with the distance between the two consecutive poles being the same, in 4 min 3 seconds, What is that distance between the two poles?
In the following question, the 1st and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/ passage is split into four parts and named P, Q, R and S. These four parts are not given in their proper order. Read the sentence/passage and find out which of the four combinations is correct. 1. Magnets have south and north poles. P. Electromagnets are similar to other magnets but their magnetic properties are temporary.  Q. Opposite poles of two magnets attract whereas like poles repel each other. R. This is the basic principle behind electromagnetic propulsion.  S. It is easy to create a small electromagnet. 6. You only have to connect the ends of a copper wire to the negative and positive ends of an AA, C or D-cell.
What will be the total weight of 10 poles each of the same weight ? I. One-fourth of the weight of a pole is 5 kilograms. II. The total weight of three poles is 20 kilograms more than the total weight of two poles.
Question : What will be the total weight of 10 poles, each of the same weight ?

Statements :
I. One-fourth of the weight of each pole is 5 kg.
II. The total weight of three poles is 20 kilograms more than the total weight of two poles.
Consider the following statements related to stability of the control system : 1. Poles in right half-plane (rhp) yield pure exponential decaying natural response. 2. If poles of multiplicity greater than one are present on the imaginary axis, then the system is marginally stable, 3. If one pole is present in right-half plane, the system is unstable. 4. A system is stable if the natural response approaches zero as time approaches  infinity. Which of the above statements is/are not correct ?  
Assertion (A): The closed loop stability can be determined from the poles of an open loop system and the polar plot of the frequency response. Reason (R): Unstable system has right half poles.
Suppose x[n] is an absolutely summable discrete-time signal. Its z-transform is a rational function with two poles and two zeroes. The poles are at z = ±2j. Which one of the following statements is TRUE for the signal x[n]?
As described by the bi-polar process of education, there are two poles influencing each other according to Sir John Adam. They include the educator and the educand. Who among these represent the two poles?
The tops of two poles of height 60 metres and 35 metres are connected by a rope. If the rope makes an angle with the horizontal whose tangent is 5/9 metres, then what is the distance (in metres) between the two poles?
Given below are two quantities named A & B. Based on the given information; you have to determine the relation between the two quantities. You should use the given data and your knowledge of Mathematics to choose between the possible answers. A rectangular plot measuring 56 meters by 44 meters is to be enclosed by wire fencing along the boundary of the plot. The fence will be tied on poles that will be placed along the boundary. Quantity A∶ Number of poles required for fencing, if each pole is at a distance of 12.5 meters. Quantity B∶ Radius of a circle whose area is 25% of the area of the rectangular plot.