Electrical Engineering

The formula you are looking for is R = E/I.

If the motor is a three phase the most likely voltage the motor operates on will be 480 volts.

A voltage regulator. Examples are the 78dd series of regulators where dd is the voltage, e.g. 7805, 7812. These work with a positive rail, the 79dd regulators work with a negative rail.

To limit the current flowing through the primary circuit.

Nothing happens.

Transformers are rated in KVA because that is a more accurate way to measure their capacity requirements. KWH is apparent power, while KVA is true power, and the ratio between them is power factor. The power factor is a function of the load, and not the transformer, so a poor power factor would make KWA look less to the transformer while, in fact, the true power, if not met by the transformer, could overload the transformer.

Full time, 8 hours a day, six days a week

My unit requires you to plug in the tone generator to the outlet whose corresponding breaker you are trying to locate and turn on the tone. You then go to panel with receiver and hold button in while running the receiver up and down the panel. You will hear a tone once the breaker is located.

The efficiency of a device in electronics and electrical engineering is defined as useful power output divided by the total electrical power consumed.

Scroll down to related links and look at "Electrical efficiency - Wikipedia".

It is important to keep the phase sequence the same throughout the system but it is more important to connect the transformers up with the right polarities. Never close a delta connection without a test fuse wire first, for correct transformer polarity connection.

its also named as potential transformers...it is one type of instrument transformers used to measure high range voltages using low range volt meters. basically it is used to extend the range of meters.

For the same reason that its used in transistors and resistors...Its a semiconductor.

It would not be immediately dangerous but there is a possibility of overheating with the 9% overvoltage so it isn't a good idea unless the motor is lightly loaded and watched very carefully. The safe voltage range should be marked on the motor.

The microprocessor is the most common integrated circuit chip that is used in modern computers. The microprocessor is a multipurpose, programmable device, and processes data according to instructions stored in its memory thus providing the results as output.

compensating windings are used to overcome armature reaction

Ohm's Law: Voltage = current x resistance; solving for voltage, current = voltage / resistance.

Ohm's Law: Voltage = current x resistance; solving for voltage, current = voltage / resistance.

Ohm's Law: Voltage = current x resistance; solving for voltage, current = voltage / resistance.

Ohm's Law: Voltage = current x resistance; solving for voltage, current = voltage / resistance.

when the field winding of dc motor opens the flux is zero so the speed is inversely propotional to speed ,so motor runs at dangerous speed...........

Gravitational potential energy being converted to kinetic energy

(R1 * R2) / (R1 + R2) = 2 Parallel

R1 + R2 = 9 Series

Treating the two as simultaneous equations, and substituting for R1:

((9-R2) * R2) / (9 - R2 + R2) = 2

R2^2 - 9R2 + 18 = 0

Solving the quadratic, we get:

R2 = 6 ohm R1 = 3 ohm

Which you can check by substituting back into the original equations.

Pumping means if breaker is close & give close command (electrical or manual) to it,spring will discharge & charge again. To prevent this pumping anti pumping feature is required,which in turn will help to restrict unnecessary operations of breaker mechanisms.

All depends on which one you have. But some of the new ones could be. Because of faulty control boards. Also depends on what condition your system is in.

It makes AC ( alternating current ) . That's why it's called an alternator. A DC generator would usually be called a dynamo.