Electrical Engineering

You can't convert kVA (kilovolt.amps) to current (amps) unless you know the source voltage and/or load resistance (ohms) which is drawing the current from the source.

If you know the voltage in kilovolts, you just divide the kilovolt.amps figure by the number of kilovolts and the result is the current in amperes.

If you know both source voltage and load resistance you can use Ohm's Law to get the current:

I = V / R

In words, Ohm's law is:

Current (amps) = Voltage divided by Resistance (ohms)

As long as it is an induction 110 volt motor it can be reversed; if it is any other type of motor it cannot be reversed. You will have to get into the windings to bring both leads to the start in order to make it go in reverse.

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A split phase induction motor has two sets of coils and a centrifugal start switch. The start winding is in series with the start switch. The start winding provides a rotating magnetic field in one direction enabling the motor to start. The motor can be reversed by reversing the connections of either the start winding or the run winding but not both.

The typical answer is current is zero when there is a break in the circuit. It depends on the complexity of the circuit, there may be other paths for the current to flow, such that if there is a break in one part of the circuit, the rest of the circuit still has current flow (but a different value than designed).

If you are reading voltage, and there is a break then that will change, also depending on the complexity. If it is a single loop, and you're reading voltage before the break, your voltmeter will read the same voltage as the voltage source, since there is no current flowing between any resistors between the meter and the source. If you're reading voltage after the break then the meter will read zero (0) volts.

Well from my experience , i know that the equipment used for testing is called, Electroclysis Differentiator with a Dicasidace Robinium resistor.

DECCAN QUEEN - The first electric train in India was named as DECCAN QUEEN which started in 1929 and travelled from Kalyan to Pune
the first electric train in India was named as DECCAN QUEEN which started in 1929 and travelled from kalyan to pune....

Theoretically, it can be drawn at any angle. Normally, however. it is drawn along the real, positive, axis (i.e. facing East). For series circuits, the reference phasor is the current and, for parallel circuits, the reference phasor is the voltage. For transformers, it is the flux.

A generator converts kinetic energy into electrical energy; a motor converts electrical energy into kinetic energy.

Depending on the size of the transformer, several different types of insulator are used. These include varnishes, plastics, paper, and fabrics (to insulate the windings), wood (spacers), and oil. Transformer oil improves the insulation value of paper, fabrics, and wood when absorbed by them. The oil has a secondary purpose, which is to cool the transformer.

Yes, you can use both, but watts is more useful; it provides the total amount of power the generator can output.

by using dc volts across pairs and with an analog meter to check the deflection of the needle to determine if they are in phase

1.8 kilowatts = 2.4 hp

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The conversion is 746 watts are equal to 1 horsepower. To change 1.8 kilowatts to watts is 1.8 x 1000 = 1800 watts. Therefore 1800/746 = 2.4 horsepower. This is how the answer above was obtianed.

No, There can't Be current without voltage

resistance

The first statement is true, the motor needs a power source to operate.

A 3-phase motor will not run on single-phase power or if one of the three phases is disconnected. If the motor is not running, there is no back-EMF generated in the coils, and they draw excessive current, thus overheating.

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I think your are asking about the working principle of a pneumatic transmitter. (not transmeter) A pneumatic transmitter measures liquds or air temperatures over a given range-usually a 200 degree temperature range. The range, selected for its purpose could be -40 to +160 or 0 to 200 -as in the case of Honeywell or even 100 deg. ranges, as in the case of say-Johnson Controls. (0-100) Aside from temperature range, the other important criteria is the output of the transmitter. In the case of commercial controls, the correlation of 200 degree temperatures (which is 201 values, not 200) occurs over a pressure span/output of 3 to 15 pounds.(13 values) For example, in the case of a 200 degree transmitter of say 0 to 200 degrees, the zero temperature value output equates to a 3 psi signal. At 200 degrees, the top of the range, the transmitter would output a 15 psi signal. In other words every degree change up from zero degrees would account for a pressure increase (rounded)of .064 psi. (13 pounds divided by 201 degrees)=.0646766) Pneumatic transmitters are typically direct acting and are one-pipe constant bleed devices. Their working principle involves movement of a flapper a given distance in direct response to the sensed temperature acting upon it. As the temperature rises, the bleed port positions itself toward a closed position which allows less air to escape to atmosphere. Less air to atmosphere dictates more air building up in the air line. This value is then transmitted/measured by the controller-which is pneumatically attached to the transmitter.

There no brushes in an induction motor. The rotor is independent and is a short-circuited cage of parallel bars.

Kilovolt = 1000 volts.

Objects that conduct electricity poorly are called poor conductors of electricity or insulators . There is a difference though. Poor conductors of electricity are capable of conduction under certain circumstances while insulators cannot conduct electricity under any condition, example ; air is a poor conductor of electricity as it cannot conduct under normal conditions but lightning is able to pass through it during a storm.

A transformer is a static device which converts electrical energy from one circuit to another circuit without changing frequency, power, power factor.

It works on the principle of faradays laws of electro magnetic induction.

Yes, that is exactly the way they service high-tension lines: they are deposited from helicopters, attach themselves directly to the power line and work from there! As long as they do not touch another line or anything that is "grounded" (connected to earth), they are fine, as they do not form a "circuit".

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Linemen are not 'deposited from helicopters'.

They are lifted from the ground in the 'bucket' of a so-called 'cherry picker' truck,

insulated from the ground by its tires. A ring of warning cones is placed around the

truck, and man-carrying bucket is then attached to the line. At that point, the

bucket, the man, and the truck are all at the voltage on the line. The man in the

bucket may safely handle the line, and nobody has a problem unless he happens

to be walking by on the ground and decides to catch hold of the truck.,