Question

A 1.5 kW motor is running at. 1440 rev/min. It is to be connected to a stirrer running at 36 rev/min. The gearing arrangement suitable for this application is (a) differential gear
(b) helical gear (C) Spur gear
(d) worm gear

Answer 1

the answer is differential gear

Answer 2

The required option is "(d) worm gear".

Explanation:

To find, the gearing arrangement suitable for this application = ?

Let us first find speed reduction required.

We know that,

Velocity ratio $=\dfrac{N_{motion}}{N_{stirrer}}$

$=\dfrac{1440}{36}}$

= 40

∴ The velocity ratio is equal to 40.

For the velocity ratio of around 35 - 45, worm gear is suitable gear train.

Hence, the required option is "(d) worm gear".