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Can a rheostat be used to control speed on a capacitor run motor?
No. If you attempt to reduce the voltage to a cap start motor by using a rheostat, you can destroy the motor.
When to use a rheostat?
Depending on the situation. The purpose of the rheostat is use to change the resistance of the circuit. The rheostat is use to define Ohm Laws the 2nd situation is use to find out what the fixed resistor's resistance. 3rd purpose : used to control the resistance of circuit. eg Radio
In a DC circuit is there an alternate to rheostat for controlling the battery voltage?
In a DC circuit, one alternate to the rheostat for controlling battery voltage is a voltage regulator. You could build a linear regulator, but you need to consider the power that might be dissipated - this would be the same amount of power dissipated by the rheostat. You could also build a switching regulator - this would be more complex, but it could be more efficient because the dissipation across the regulator would be less.
What are the problems of commutation in a DC generator?
1.resistance commutation 2.e.m.f commutation
What type of device is used to convert the high voltage on a feeder line to a lower voltage that can be used on the plant floor?
To convert the high voltage on a feeder line to a lower voltage that can be used on the plant floor you use a transformer.
How do you use 12 volt battery on 6volt coil?
Use a rheostat to lower the voltage to six volts
Explain the rheostat and its advantages in electric circuits?
Advantages in electric circuits : Advantages of using the rheostat in electric circuits is optional as you could just use the dial on the power-supply to vary the voltage (p.d.), and therefore the current. The advantage of using the rheostat is that you can control it to give you nice even numbers for the voltage.
Can a rheostat be used to control speed on a capacitor run motor?
No. If you attempt to reduce the voltage to a cap start motor by using a rheostat, you can destroy the motor.
When the voltage applied to the rheostat is doubled then tripled what happens to the rheostat?
The heat released by the rheostat with double the voltage will quadruple. When voltage is tripled, the power loss is 32 or 9 times that before. A rheostat is a kind of variable resistor. Since E = IR (voltage equals current times resistance), then I = E/R (current equals voltage divided by resistance). If the voltage is doubled and the resistance stays the same, then--you can see by the formula--the current would double. Now, power dissipated by a resistor is related to the product of the current and voltage (P = IE). But since a doubling of voltage produces also a doubling of current, double the current results in 2X2=4 times the power (heat) loss.
When to use a rheostat?
Depending on the situation. The purpose of the rheostat is use to change the resistance of the circuit. The rheostat is use to define Ohm Laws the 2nd situation is use to find out what the fixed resistor's resistance. 3rd purpose : used to control the resistance of circuit. eg Radio
What kind of circuit lowers voltage?
you can use a voltage divider or a step-down transformer to lower voltage.
Can you use a different brand charger with a lower voltage and a hr?
Lower voltage, no, lower amps, yes. I will just take longer to charge the battery.
How do you drop the voltage of a 12v dc motor to slow it down?
Install a rheostat in series with the motor.
In a DC circuit is there an alternate to rheostat for controlling the battery voltage?
In a DC circuit, one alternate to the rheostat for controlling battery voltage is a voltage regulator. You could build a linear regulator, but you need to consider the power that might be dissipated - this would be the same amount of power dissipated by the rheostat. You could also build a switching regulator - this would be more complex, but it could be more efficient because the dissipation across the regulator would be less.
What are the problems of commutation in a DC generator?
1.resistance commutation 2.e.m.f commutation
Why the armature voltage E changes when the field rheostat is varied?
This depends on how the motor and wiring. You'll need to provide more information. Series / compound / shunt / differential / self or separately excited / is the rheostat in parallel or series to the field / is the rheostat on the shunt field or series field (if compound)
What type of device is used to convert the high voltage on a feeder line to a lower voltage that can be used on the plant floor?
To convert the high voltage on a feeder line to a lower voltage that can be used on the plant floor you use a transformer.
