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What happen if all the diode in bridge rectifier is reversed?
it will work as a rectifier . because the AC current to be rectified will not be effected by this change. the out put DC polarity will be changed.
Why multiplication factor of wattmeter is required?
THIS MULTIPLIER WHETHER USED FOR MEASURING POWER (WATT METER/KILOWATT METER) OR ENERGY (KILOWATT-HOUR METER) ARE USUALLY USED FOR HIGH AMPERE LOAD UNLIKE IN RESIDENTIAL APPLICATION THAT METERING ARE DIRECTLY CONNECTED TO SUPPLY LINE. THIS MULTIPLIER IS OBTAINED FROM THE RATIO OF CURRENT TRANSFORMER USED, FOR EXAMPLE 300:5 THIS MEANS YOU HAVE TO MULTIPLY YOUR GATHERED READINGS TO 60 TO HAVE THE ACTUAL CONSUMPTION. THE CURRENT TRANSFORMER (INSTRUMENT TRANSFORMER) IS NORMALLY SHAPED LIKE "DOUGHNUT" WHERE CABLE PASS THROUGH OR RECTANGULAR SHAPED FOR BUSBARS TO MEASURE ACTUAL LINE CURRENT AND COMBINED WITH POTENTIAL (VOLTAGE) TRANSFORMER FOR REMOTE METERING AND SYSTEM PROTECTION PURPOSES IN COMMERCIAL & INDUSTRIAL APPLICATIONS OR WHERE LOAD ARE HIGHER AND FOR SAFETY PURPOSES TO PERSONNEL/TECHNICIANS.
Magnetic inrush current in power transformer with waveforms?
The mgnetic inrush current is the current drawn by the transformer when power is applied to the primary winding
The current load of a transformer is the current drawn by the?
load
When using a multimeter to measure a dc current are the terminals polarity conscious?
Yes, if they are reversed the reading is also reversed. On a digital meter this will usually be displayed as a negative value, but on the older style mechanical analog multimeters it may actually damage the meter by "pegging" the needle in the backwards direction and bending it causing all future readings to be wrong.
What will happen if the transformers working in parallel are not connected with regard to polarity?
when two transformer are connected in parallel condition,and the polarity of transformer are opposite to each other then a large circulating current flow through out the winding,therefore a very small current flow thro, the load .therefore lifespan of transformer will be reduced.
What would be the current if the polarity of the 8volts power unit is reversed?
sketch the I-V characteristics of a semiconducto zener diode
Why transformers do not have poles even though it has magnetic field?
The windings of a transformer do have poles, which alternate in polarity in step with the A.C. magnetising current. As the polarity of the poles reverse, so too does the direction of the magnetic flux within the transformer's core.
How you can find positive and negative in a transformer?
There is no positive and negative on a transformer. Transformers will only pass AC (alternating current), due to the fact that induction will only occur with a moving field. The current has to be changing polarity and intensity continuosly, for the current to be induced in the windings. Both terminals on the output vary, with relation to each other. Put DC into a transformer and the coils will saturate, overheat and probably burn out.
When the direction of current flow is reversed the current of an electromagnet swap over?
When the direction of current flow is reversed in an electromagnet, the magnetic poles also reverse. This means that the north pole becomes the south pole and vice versa. So, the current in the electromagnet determines the polarity of the magnetic field it produces.
What happen to an electromagnet's field if the direction of the current ic reversed?
If the direction of the current in an electromagnet is reversed, the direction of the magnetic field surrounding the electromagnet will also reverse. This change in direction will affect the polarity of the electromagnet, causing its north and south poles to switch.
What will happen if you change polarity in parallel circuit?
If you reverse the polarity in a parallel circuit, the components will still function but the direction of current flow through each component will be reversed. This could lead to a change in the behavior of any polarized components in the circuit, such as diodes or electrolytic capacitors. It is important to ensure that the components can handle the reversed polarity to prevent damage.
What happens when the electric current is reversed on am electromagnet?
When the electric current is reversed on an electromagnet, the direction of the magnetic field is also reversed. This means that the north and south poles of the electromagnet switch places. This change in polarity can have various effects depending on the application, such as reversing the direction of motion in a motor or changing the direction of attraction or repulsion in a magnetic system.
Why does the rotation of the motor reversed when change the polarity across the main winding coil?
When changing the auxilary face winding connection the current flow in the winding is changed so that the rotating emf direction is changed . Thats why the motor rotates in opposite direction.
Does a galvanometer have a reversed current or not?
The current is reversed in a galvanometer
Why would the negative ground drain the battery when car is off?
Because if you reversed the polarity at the battery it would blow the fuse through which current flows to the drain.
What happen if all the diode in bridge rectifier is reversed?
it will work as a rectifier . because the AC current to be rectified will not be effected by this change. the out put DC polarity will be changed.
