Question

The block denoted as follows is known as __________

(a) Delay block

(b) Advance block

(c) Multiplier block

(d) Adder block

This question was addressed to me in an interview for internship.

Origin of the question is Discrete Time Systems in chapter Discrete Time Signals and Systems of Digital Signal Processing

Answer 1

Correct answer is (a) Delay block

Easy explanation: If the function to this block is x(n) then the output from the block will be x(n-1). So, the block is called as delay block or delay element.