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Because you are not supposed to be doing this in class Kayleigh! (:

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13y ago

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What is a braking resistor?

A braking resistor is used in motion systems where a motor in controlled by a drive. Typically, these are high-speed servomotors controlled by a servodrive. When accelerating, electrical energy is converted to a mechanical force to move a mass. When decelerating, that kinetic energy is converted (via the motor) back into electrical energy, and must go somewhere. To brake quick enough, the energy must be dumped into a power resistor, to be dissipated as heat. Read more at the link provided below.


How is solar energy controlled or processed?

no


How is thermal Energy Controlled?

with a thermostat


In an experiment what are controlled variables?

Controlled variables are quantities that must remain constant.


Can oil burn in a controlled manner to produce heat and energy?

Yes, oil can burn in a controlled manner to produce heat and energy.


Is nuclear energy good for humans and the environment?

Nuclear energy provides electricity which is good for humans, and for the environment it does not produce greenhouse gases, so that is good. However it has dangers too, so must be well controlled


What energy is 'light is blocked?

the path that a controlled


What energy is it when light block?

the path that a controlled


Is zofran a controlled substance?

No it is not, but you must have a prescription for it.


How energy is controlled by biogas?

It isn't. Fuels such as biogas store energy, they don't control it.


Define thyristor controlled braking resistor?

A braking resistor is used in motion systems where a motor in controlled by a drive. Typically, these are high-speed servomotors controlled by a servodrive. When accelerating, electrical energy is converted to a mechanical force to move a mass. When decelerating, that kinetic energy is converted (via the motor) back into electrical energy, and must go somewhere. To brake quick enough, the energy must be dumped into a power resistor, to be dissipated as heat. A thyristor (also known as a silicon-controlled rectifier or SCR) is a diode which has a gate terminal on it. Current at the gate allows the thyristor to go into a conducting mode, allowing current to pass. Modern drives will detect when their DC bus voltage reaches a certain threshold (from the energy being returned from the motor during braking) and begin triggering the thyristor periodically (typically PWM, pulse-width modulation) to disperse this energy as heat. See links.


Why must a controlled experiment have one manipulated variable?

a controlled experiment must have only one manipulated variable becuase if the experiment had multiple manipulated variables then it would not be a controlled experiment anymore it would be a manipulated Deseret experiment