Question

A sensitivity of $100$ pulses per revolution shown by a shaft encoder connected to a DC motor. A frequency meter attached to encoder shows $50000Hz$. The speed of the motor measured by shaft encoder (in rpm) is

• A. 300

Answer 1

The correct option is A 300
$\text{In case of shaft encoder}$

$\text{speed in rpm}=\frac{\text{Pulses per second}}{\text{no of teeth}}\times 60$

$=\frac{5000}{1000}\times 60$

$=300rpm$