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What polarities red wires and black wires indicates in case of dc measurement?
In typical DC circuits, Red = Positive, Black = Negative.
What is the meaning of the DC electrical terms Positive Neutral and Negative?
DC means "direct current." Normally this is provided by a battery or transformer. Positive - The positive contact where current flows into a circuit. Neutral - The ground wire in case something happens like a surge. Negative - The negative contact where current leaves.
Why capacitor does not store alternate current but store direct current?
Because Alternet current has both positive as well as negative cycle capacitor does not conduct for negative cycle of the Alternet current and DC all are positive cycle thats why it capacitor conduct for DC not for AC
In a dc circuit polarity refers to the direction of which flow?
In the US, it is common practice in a DC circuit to refer to the polarity for which "positive (+) charge" is flowing. Positive charge (current) will flow out of a voltage supply's positive (+) terminal which means positive charge will flow into the (+) terminal of a circuit load (resistor, etc). This is an arbitrary convention and may be reversed in older or foreign textbooks. In such cases all positive (+) references in the previous description would be replaced by negative, (-) notations.
What is the direction of the current?
Current flows from negative to positive for DC. AC the direction changes with the sinewave. eg. AC a frequency of 60Hz the direction changes 120 times.
What is the difference between an AC servomotor and a DC servomotor?
With a DC motor, power is supplied from a controller and transmitted to the motor windings via brushes and a commutator using pulse width modulation. This requires that the controller be adequate to handle the power/heat of the application and that the brushes and commutator are well maintained as they are wearing parts. With an AC servomotor, the controller only provides a low power signal to any size motor. Raw power to the motor is handled separately from the control circuit. The control signal is used to control the position of the motor which has internal position sensing capability. Power to the AC servo is always on.
What are the differences between ac servomotor and dc servomotors?
AC servomotors require an alternating current as a power source, meaning they need to be plugged into an outlet, while DC servomotors require a direct current as a power source, meaning they can be run off of battery power.
How do you introduce feedback circuit in dc motor speed control?
By using your brain
What is the effect of feedback on DC servo motor performance?
the sprrd regulation is cnsiderably improved.
What color is green positive or negative for DC?
green is ground regardless of ac or dc
In dc electric Which wire is positive?
Brown
What color usually represents positive in electricity?
If it is DC then red is positive and black is negative.
How do you get -48v DC?
In a 48V DC system you ground the positive to 0V so the live wire will be -48V.
What is use of RFC in Hartley oscillator?
it is a radio frequency choke which connects the dc supply to the circuit but isolate the dc supply from the high frequency oscillations generated in the feedback circuit
What polarities red wires and black wires indicates in case of dc measurement?
In typical DC circuits, Red = Positive, Black = Negative.
What is frequency of dc?
You can say DC voltage has a frequency of zero Hz.Because it is unidirectional in nature (may be positive or negative)
What is collector bypass capacitor?
A: It is not a bypass it is a negative feedback to effect the input voltage, Bias is when a DC voltage is applied to insure proper operation
