## What are the main criteria in selection of motor?

**A constant or variable torque and horsepower** will be required for the industrial motor depending on the type of load the motor is driving. The size of the load, the required speed, and acceleration/deceleration—particularly if it’s fast and/or frequent—will define the torque and horsepower that is required.

## How do you choose a motor?

There are several characteristics that you need pay attention to when selecting a motor but **voltage, current, torque, and velocity** (RPM) are most important. Current is what powers the motor and too much current will damage the motor. For DC motors, operating and stall current are important.

## What are the 4 main steps you need to consider when selecting a motor for a given application?

**5 steps to choose the best motor for your application**

- Step 1: Know the load characteristics. …
- Step 2: Get a handle on horsepower. …
- Step 3: Getting started. …
- Step 4: Adjust for duty cycle. …
- Step 5: The last consideration, motor hypoxia.

## What should I look for when buying an electric motor?

When searching to buy an electric motor or gear motor for your application, it is important to consider **requirements beyond speed, torque, power and voltage**.

## How do you determine the RPM of a motor?

How to Calculate Motor RPM. To calculate RPM for an AC induction motor, you **multiply the frequency in Hertz (Hz) by 60** — for the number of seconds in a minute — by two for the negative and positive pulses in a cycle. You then divide by the number of poles the motor has: (Hz x 60 x 2) / number of poles = no-load RPM.

## Which motor is constant speed?

**A DC motor** can be referred to as a constant speed motor because it can self- regulate its speed.

## What is the cost of 1hp motor?

Top Selling Pumps & Motors Price List in India

Latest Pumps & Motors Models | Expected Price |
---|---|

Sameer 1 HP i-Flo Water Pump with 1 Year Warranty, Total Head: 100 ft | ₹2454 |

Kirloskar Chhotu 0.5HP Domestic Monoblock Water Pump, Total Head: 85 ft | ₹2356 |

Sameer 0.5HP i-Flo Water Pump with 1 Year Warranty, Total Head: 82 ft | ₹1936 |

## How do you size a motor?

The quickest method to closely estimate motor horsepower is to use a digital clamp meter to measure current and voltage to the motor, and then perform a simple calculation. Use this formula to estimate motor horsepower. Horsepower(hp)= **Voltage x Amperage x % EFF x power factor x** 1.73/746.

## How do you select a pump motor?

When choosing a motor for a centrifugal pump, you must consider the **impeller size, maximum capacity, specific gravity of the fluid, and service application** in case API requirements apply. If you take these things into account, you will select the right motor for your centrifugal pump application.

## How can you tell how powerful an electric motor is?

**By taking the voltage and multiplying it by the associated current**, the power can be determined. A watt (W) is a unit of power defined as one Joule per second. For a DC source the calculation is simply the voltage times the current: W = V x A.

## How do I know what size electric motor I need?

**Divide the motor speed by the required speed** and round down to get a starting gear ratio. Then divide the required torque by the gear ratio to find the newly required torque. This will help you narrow the choices down to a few select motors.