Machine-translated by Google. Questions are authored in English.
Top

Discussion

Comparing a digital voltmeter with an analogue one, the digital instrument is inferior in

  • A.showing a trend or a slowly varying quantity at a glance
  • B.the accuracy it can achieve for a given cost of manufacture
  • C.the loading it imposes on the circuit being measured
  • D.the freedom from reading and parallax errors it provides

Answer: A

A moving pointer conveys direction and rate of change immediately, whereas a flickering set of digits conveys neither. This is why many digital instruments now include a bar graph alongside the numerals, to recover what the pointer gave.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.