Related Questions

The transfer function of a discrete time LTI system is given by
$$H\left( z \right) = {{2 - {3 \over 4}{z^{ - 1}}} \over {1 - {3 \over 4}{z^{ - 1}} + {1 \over 8}{z^{ - 2}}}}$$
Consider the following statements:
S1 : The system is stable and causal for
$$ROC:\left| z \right| > {1 \over 2}$$
S2 : The system is stable but not causal for
$$ROC:\left| z \right| S3 : The system is neither stable nor causal for
$$ROC:{1 \over 4} Which one of the following statements is valid?
If the ROC of X(z) is r1<|z|
What is the ROC of z-transform of finite duration anti-causal sequence?
What is the ROC of z-transform of an two sided infinite sequence?
Consider the following Statements regarding the ideal operational amplifier 1. Output common-mode noise voltage is zero 2. Infinite bandwidth 3. Unity Common mode rejection ratio 4. infinite slew rate 5. Infinite output impedance Which of the above properties are correct?
Assertion (A): The stability of the system is assured if the ROC includes the unit circle in z-plane. Reason (R): For a causal stable system all the poles should be outside the unit circle in the z-plane.
Assertion (A): For the rational transfer function H(z) to be causal, stable and causally invertible, both the zeroes and the poles should lie within the unit circle in the z-plane. Reason (R): For a rational system, ROC is bounded by poles
What is the term for numbers that can be expressed as an infinite sequence of decimals (including terminating decimals that can be considered as having an infinite sequence of zeros on the end)?
Consider two infinite duration input sequences {x1[n], x2[n]}. When will the Region of Convergence [ROC] of Z-transform of their superposition i.e. {x1[n] + x2[n]} be entire Z plane except possibly at Z = 0 or Z = ∞ ?
Select the correct differences between char and varchar data types? i. varchar is non unicode and char is unicode character data type ii. char is ‘n’ bytes whereas varchar is actual length in bytes of data entered in terms of storage size iii. varchar is variable in length and char is the fixed length string iv. For varchar, if a string is less than the maximum length then it is stored in verbatim without any extra characters while for char if a string is less than the set length it is padded with extra characters to equalize its length to given length