# RPM Full Form | Full Form of RPM

## RPM Full Form - Revolutions Per Minute

Revolutions Per Minute

• RPM stands for Revolutions Per Minute. It's a measure of the frequency of rotation, the number of revolutions per minute.
• It tells how many times a mechanical component revolves around its axis in one minute.
• So, RPM is that the rotational speed of a mechanical component like the crankshaft of an engine, power generator turbine, CD or DVD player and turbocharger.
• A common example to understand the RPM is that the tachometer within the dashboard of a car. It shows the frequency of rotation of the engine.
• It measures how many times the crankshaft of an engine revolves around its axis in one minute.
• Generally, a tachometer measures RPM in thousands so if its needle is at 2 it means the engine is at 2000 rpm and its crankshaft is revolving 2000 times in one minute.

## Cases of RPM

• The rotational speed of modern air compressors dental clinics reach around 800,000 rpm (13.3 kHz).
• The rotational speed of a secondhand conventional analog clock is just 1 rpm.
• Ordinarily, DVD players also read disks in an invariable linear pace. The disc frequency of rotation changes from 25.5 Hz (1530 rpm) when studying in the inmost periphery, to 10.5 Hz (630 rpm) in the outside periphery.
• The rotational speed of a washing machine's drum can differ from 500 to 2,000 rpm (8--33 Hz) to the whole period of the spin cycles.
• The rotational speed of an energy generation telescope using a two-pole alternator is approximately 3000 rpm (50 Hz) or 3600 rpm (60 Hz), based on the nation.