Is a 3 phase motor a Synchronous motor?
A synchronous motor can be a type of 3-Phase AC motor, or not.
A synchronous motor is defined by the period of the rotor being synchronized with the frequency of the stator windings' current. The stator windings might be 3-Phase or not (2-Phase would work).
Also synchronous motors are not the only type of 3-Phase AC motors. An induction motor could also be 3-Phase AC and has a few advantages and disadvantages over a synchronous motor.
Is it common to use a 4160 V 3 Phase motor with a variable speed drive?
No, a 4160 volt motor with a high inertia load will use a resistor bank in the starting of the motor.
How many types of winding are used in AC and DC motors?
IN DC MOTOR
There are 2 types of windings:
1. Field winding
On poles core which are on stator body.These are always concentrated type.
2. Armature winding
On rotor on motor may be simplex or multiplex and lap or wave connected.
IN AC (Synchronous ) MOTOR
3-phase star or delta connected on stator (armature ) supplied
by 3 phase may be concentrated or distributed (usually preferred) .
Rotor (field ) has concentrared in salient pole type nd distributed in cylindrical type supplied by DC supply.
IN AC ( Induction ) MOTOR
3-phase (star or delta connected) distributed winding on stator and wound rotor .In squirrel cage rotor short circuted copper bars are used.
How fast does an electromagnet have to spin to produce 1megawatt?
A spinning electromagnet does not produce power without other components that you need to specify.
What is the price range when purchasing a power generator?
The price range when purchasing a power generator depends a great deal on the size of a generator. A small generator for the garage can be purchased for $100.00 while a large industrial generator can cost as much as $30,000.00.
I imagine 2200 is the value and usual is in microfarad a one farad will be a huge capacitor to be used in electronics.
What is the meaning of Passive in Electrical?
Passive electronic components are those which do not amplify voltages or currents by themselves. These include resistors, capacitors and coils. Transistors and integrated circuits are known as' Active' components since they can amplify signals applied to them.
In AC circuits coils (chokes) and capacitors DO change their characteristics when varying frequencies are applied to them but they are generally not classified as active components.
It is okay sometimes to use a power supply that allows for more amps than your device. You have a good chance of burning up your converter because the printer wants more amps than the power supply can give. It is okay sometimes to use a power supply that allows for more amps than your device. You have a good chance of burning up your converter because the printer wants more amps than the power supply can give.
Normal operation of the transistor collector diode has to be?
Reverse-biased
---from the book of Malvino
120 volts X 13 amps is 1560 watts.
How does High and Low voltage cut out circuit works if voltage varies?
I assume you mean - 'Why does a circuit fail to work if the operating voltage is too high or too low?' A certain specific voltage is needed to overcome the natural resistance in circuit components. For instance in simple transistors, this is 0.7V to get the transistor to switch on and 1.4V is lost across the switched junction. This is why may circuits operate at above 3V. The rest of the circuit is designed to operate at the specified voltage and if you go too high, too much current will flow through the circuit and it will fail in the same way a fuse will blow if too much current is passed through it.
List four classes of operation of a transistor amplifier?
Stop asking homework questions.
Class A -Best Audio Sound
Class AB - between A and B
Class B - (Slight crossover noise)
Class C - Best RF Amp
Where are variable frequency drives used?
Variable Frequency Drives are used in HVAC systems to control or vary the speed of Fans and Pumps. Over half of the electrical energy in a commercial building is used to move air via fans and water via pumps through the building to Heat and cool the building. Pumps and Fans are usually oversized or sized for the worse case conditions.
Without a Variable Frequency Drive they run full speed at all times using a tremendous amount of energy. The Variable Frequency Drive allows the Pump or Fan to run at different speeds depending on the need. This saves huge amounts of energy.
Due the Affinity Law for Fans and Pumps reducing the speed by 10% saves 21% in energy, reduce the speed by 20% = a 49% energy reduction
Is there continuity between a three pole circuit breaker terminals?
No, the three individual poles of a three phase circuit breaker are not electrically connected to each other. If they were, a fault would develop internal to the breaker.
How is a ventricular shunt inserted?
The ventricular shunt tube is placed to drain fluid from the ventricular system in the brain to the cavity of the abdomen or to the large vein in the neck (jugular vein).
Why one side of the transmission line WE use SVL link box and another side without SVL link box?
The sheaths of the three cable sections are
connected and grounded at one point only
along their length. At all other points, there will
be a voltage between sheath and ground that
will be at its maximum at the farthest point
from the ground bond. The sheaths must
therefore be adequately insulated from ground.
Since there is no closed sheath circuit, except
through the sheath voltage limiter, current
does not normally flow longitudinally along the
sheaths and no sheath circulation current loss
occurs.
qadeer
In order to provide the power for a heater and lights which device would be appropriate?
Suitable rated separate circuits with MCBs are advisable.
Two-phase systems have not been in general use for about 100 years because they were replaced by three-phase systems worldwide.
Another type of power that is still used is 'split-phase' which is a single-phase supply using a centre-tapped transformer. For example a supply transformer has a 240 v secondary with a grounded centre-tap, so that two separate 120 v live wires are connected to the property, along with the neutral. High-power appliances like cookers or aircon can be connected across the two live wires to work at 240 v.
Split-phase is also used in Europe with a 460 v centre tapped transformer used to supply a relatively small remote community, with individual properties fed a 230 v supply from one or other of the two live wires plus the neutral. The advantage is that it reduces the current in the neutral wire, and if both live wires happen to supply equal currents the neutral current going back to the transformer is zero, thus reducing power lost in the wire.
By 'adding electric currents', you are presumably talking about passing a d.c. current through a coil wound around a magnet?
First of all, you cannot increase the flux density of a magnet beyond saturation, regardless of the current or number of turns that make up the coil. Whether on not you increase or reduce the flux density depends on the polarity of the coil compared with the polarity of the magnet; if they are opposite then, yes, you can demagnetise the magnet and, in fact, remagnetise it in the opposite direction.
Can you be hurt being an electrical engineer?
I would think field trips would present the opportunity for injury. It depends on what type of work you are involved in. If you work for a power company and need to go to substations or maybe go out in an emergency to assess storm damage you need to be alert at all times because in many cases one wrong move can be deadly. Going out on construction sites also requires vigilence. I have worked for a long time as a highway and bridge construction rngineer, and I did electrical engineering work in the Navy Seabees. I would say electrical engineering field work is about 10% more hazardous than civil. But that hazard goes down as your awareness of the hazards go up. Electrical engineering with no field work is safer than civil.
How to sketch the circuit diagram of Solar electric fence for animals?
wire diagram and list of parts for Solar electric fence
Electric motor on log splitter will not go into full run mode kicks breaker?
Either you have it plugged into an outlet that has too much currant draw on it, or you are using an extension cord that is too small of a gauge wire and it is overheating causing the breaker to trip. The other problem could be the motor is going bad.