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18y ago

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What is theory of brake test on dc shunt motor?

Brake test is used to determine the efficiency of comparatively small motors. The motor is loaded directly by means of a mechanical brake (load) or by means of an eddy current or a calibrated air fan.


What size breaker do you need for a well pump?

A breaker is based on the amperage that is drawn by the pump motor load. Find the full load amperage of the motor. The wire fed from the breaker has to be rated at 125% of the motors full load amperage. The breaker for motors have to be over sized, usually 250% of the motors full load amps.


Need of load test of squirrel cage induction motor?

usually you just need to read the name plate only the manufacturer needs to test to come up with numbers on the nameplate most common load for testing motors is a water brake dynamometer


What do electric motors require to work?

A load to drive and a supply of electricity.


What is the use of motors in the fan and motors?

to cool down the engine


Can you increase the rpm of a drive motor once it drop due to added load using variable speed drive controller?

The motor is slowing down due to the load. DC Speed controllers can only slow down motors, not increase the speed/power. 3 phase AC motors are slightly different, in that the speed is controlled by a VFD (Variable Frequency Drive), which can increase or decrease the speed of a motor, provided the motor is large enough to handle the load initially. If the motor is slowing down after a load is applied, and does not regain running speed after the load has "spun up", a more powerful motor is required. Read motor data sheet for running speed. If the motor is hot while running a load, it is more than likely overloaded or at the load limit. Motors with at least 10% to 25% extra power over bare minimum should be used to make up for loss of efficiency, bearing issues, etc. over time.


Is who games a down load?

who is games load a down!


What is efffect of load on motors?

As the load increases on a motor the amperage rises. Increasing the load amps over the motors full load amp rating can shorten the motor's life because of excessive heat. Motors should have overload protection in their circuits to prevent this condition from happening by tripping the motor contactor and opening the motor's voltage supply. <<>> Gets very warm .... vibrations., possible melt, seize, much energy expended.


What wire size for world's simplest motor?

Wire size is based on the amperage of the load. Without knowing what the motors's full load amperage is, an answer can not be given.


What are the types of power assisted brake boosters?

Power-assisted brake boosters primarily come in two types: vacuum brake boosters and hydraulic brake boosters. Vacuum brake boosters use engine vacuum to amplify the force applied to the brake pedal, making braking easier for the driver. Hydraulic brake boosters, on the other hand, utilize hydraulic pressure from the vehicle's power steering system to assist in braking, offering consistent performance regardless of engine load. Additionally, electric brake boosters are emerging, which use electric motors to provide brake assistance, independent of engine vacuum or hydraulic pressure.


Why noload current in big motors is higher than load current?

In large motors, the no-load current is higher because the motor needs to overcome the friction and windage losses present when running without a load. These losses require more power to overcome, resulting in a higher current draw. When the motor is under a load, the additional power required to turn the load increases the current draw further.


need a brake down of this vin ?

need a brake down of this vin#?