Question

Which of the following refers to Compression ratio ?
(A) is the ratio of the original file size to the size of the compressed file
(B) is the ratio of the number of pixels in a frame of the original size to those in a frame of the compressed file
(C) is the ratio of compressed file size to the original file size
(D) none of these

Answer 1

Answer:

The compression ratio (CR) is defined as the ratio of the volume of the cylinder and its head space (including the pre-combustion chamber, if present) when the piston is at the bottom of its stroke to the volume of the head space when the piston is at the top of its travel ('top dead centre', tdc).

Higher compression ratio: 10.6

Lower compression ratio: 8.6

Baseline compression ratio: 9.6