ISRO exam 2015 – Question 34 with Solution

In this video we are going to discuss another question which was asked in the exam of ISRO

A hard disk system has the following parameters :
Number of tracks = 500
Number of sectors/track = 100
Number of bytes /sector = 500
Time taken by the head to move from one track to adjacent track = 1 ms
Rotation speed = 600 rpm.
What is the average time taken for transferring 250 bytes from the disk ?
(A) 300.5 ms
(B) 255.5 ms
(C) 255 ms
(D) 300 ms