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How can the output voltage of a DC generator's polarity be reversed?
Wiki User
∙ 11y ago
The polarity of DC generator can be reversed by reversing the field current as well as direction of rotation
Wiki User
∙ 11y ago
Wiki User
∙ 13y agoNothing. It will work in either direction.
Wiki User
∙ 11y agoYes. A DC generator builds up a voltage and can supply power no matter which direction it is rotated.
Wiki User
∙ 11y agomagnitude will be sign.. Now sign will be minus...
Wiki User
∙ 11y agoduuno
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How do you connect Two DC generators together to double the output voltage?
You would connect them in series to double the output voltage.
Why is the polarity of the output and input is same in ac transformer?
polarity play essential role in protection purpose if you have done wrong polarity in yours system then protection will operate under normal operationFurther AnswerThe polarity of a single-phase transformer describes the phase relationship of the secondary voltage relative to the primary voltage. Polarity is described as being either 'additive' or 'subtractive'. Knowing a transformer's polarity is one of the essential requirements for paralleling a pair of individual transformers.
When you rotate the handle of the electric generator faster does it deliver more less or the same voltage?
The speed of a generator only effects the frequency. Most generators operate at 1800 RPM. The output voltage is controlled by varying the field excitation voltage.
When the voltage of the electric current produced by a generating plant is lower than the voltage of the current carried by transmission lines?
Yes, that's because the voltage output of an alternator is restricted by the number of windings that can be slotted into its armature, restricting its output voltage to just 25-30 kV, which is far too low for transmission purposes.
What is the effect of diode voltage drop as the output voltage?
The effect of diode voltage drop as the output voltage is that the input voltage will not be totally transferred to the output because power loss in the diode . The output voltage will then be given by: vout=(vin)-(the diode voltage drop).
Can you get -5Volts as output when polarity is reversed?
yes.you can get 5v output even when the polarity is reversed. In a 5v battery, if u reverse the polarity, then u'll get the same 5v as output , but in the opposite direction.(i.e.,)-5v(negative 5 volt
What happens to the load if reverse the polarity of diode?
if you reverse the diode in a half wave rectifier, you would expect the A- Ripple to increase B- output to be less filtered C- out put polarity to be reversed D- output voltage to decrease
How do you connect Two DC generators together to double the output voltage?
You would connect them in series to double the output voltage.
How does a voltage regulator regulate the voltage output of an ac generator?
Generator output is controlled by voltage feedback to the voltage regulator which senses voltage drop or rise and regulates the current being sent to the armature. This rise and fall of the armature current governs the generators output voltage.
What is polarity protection in trunk circuit in telephone?
A bridge rectifier circuit used to convert A.C to D.C. and can also be used as a polarity protection circuit. Because irrespective of which of the input terminals is given +ve voltage , the output voltage is +ve at only one output terminal. hence polarity protected.
Why 3 phase diesel generators run undervoltage?
The excitation voltage is too low. Turn the field voltage "pot" to raise the field voltage while watching the output generator voltage.
Why is the polarity of the output and input is same in ac transformer?
polarity play essential role in protection purpose if you have done wrong polarity in yours system then protection will operate under normal operationFurther AnswerThe polarity of a single-phase transformer describes the phase relationship of the secondary voltage relative to the primary voltage. Polarity is described as being either 'additive' or 'subtractive'. Knowing a transformer's polarity is one of the essential requirements for paralleling a pair of individual transformers.
What is the difference between shunt generators and series generators?
1. In Shunt generators armature current is equal to sum of field current and load current whereas in series generators field current and load current is same. 2. Shunt generators field winding has high resistance and large no of turns as compared to series generators. 3. Shunt generator field winding has thin conductor and series generator has thick.
How do you check polarity of transformer?
H1 H2, X1 X2 is subtractive polarity--either above 9000Volts or 200 KVa H1 H2, X2 X1 is additive polarity--both must be below the above values. These values and determinations, however, are a NEMA standard. Non-standard transformers (foreign) may be different. Make a temporary connection between H1 and the X1/X2 terminal. Apply a low test voltage to the H1 and H2. Read the voltage across H2 and the X1/X2 terminal. --If the output voltage is higher than the test voltage then the transformar is additive. --If the output voltage is lower than the test voltage then the transformer is subtractive.
When you rotate the handle of the electric generator faster does it deliver more less or the same voltage?
The speed of a generator only effects the frequency. Most generators operate at 1800 RPM. The output voltage is controlled by varying the field excitation voltage.
What happen when the polarity of current transformer is reversed in three phase kilowatt hour meter?
The measured Power in KWh will become one-third beacause the output of one CT which is reveresed will cancel the output of other CT and therefore the final output will be from only one CT (i.e 1/3 of total output)
How does clipping circuits work in lab?
A clipping circuit works by the switching action of a diode when it is used in a circuit with a source voltage that changes polarity. In the forward direction, the diode's voltage is added to any dc value that is in series with it. If the source voltage is greater than the dc value at a particular instance, the diode will limit the output to the dc value. Otherwise the output voltage will equal the input voltage.
