Electrical Engineering

A substation is not a load but is a place where switching and voltage-level changing takes place. Accordingly, you cannot apply a 'power factor' to a substation.

The rotor is manufactured from a stack of circular silicon-steel lamination clamped together around a shaft, with open or closed slots running along the length of the rotor through which the rotor conductors ('bars') pass. The rotors are then interconnected at opposite ends with conducting end-rings. In some cases, the rotor bars are poured into the (enclosed) slots as molten metal. If the bars were visible, they would resemble a gerbil's exercise wheel.

On my '94 Accord LX, the motor that raises and lowers the antenna is accessible by simply peeling back the carpeted panel on the drivers side inside of the trunk. The power plug is basically right on top of the unit, very easy to disconnect. (I disconnected it because the motor was humming loudly every time I turned the radio on or off, but not actually moving the antenna.) Don't know if it will be the same on the '95, but it's a good place to check. Good luck.

should be under the hood in the power distrabution box

Transformers do not work with DC.

Transformers are magnetically coupled inductive devices that operate with AC (fluctuating) voltages. If you supplied DC to a transformer, it would simply look like a short circuit, and the secondary would stabilize to no voltage and no current.

This is because, in order to generate a current in a conductor from a magnetic field, either the magnetic field needs to be fluctuating or the conductor needs to be moving.

Because in the coil DC current follow easly and pmmc meter is making with coil and AC current is not follow in coil so we used the pmmc only fpr DC current.

A wye connection referring to electrical connections is where one end of the three coils of a three phase system are joined together and usually grounded. The three phase supply voltage is then connected to the other ends of these coils. In electrical terminology it is also known as a star connection.

No. In order to induce an EMF, the coil and the magnet must be moving in relation to each other.

I depends on the voltage.

A transformer does not normally contain a capacitor. However, you might be thinking of a 'd.c. power supply', which consists of a transformer, rectifier, and smoothing circuits. The smoothing circuits will contain capacitors.

Lacuna Coil was created in 1994.

Difficult to explain without using a circuit diagram to illustrate use as an example. Refer to any textbook to find your answer.

For conventional flow (plus to minus) FLH rule is for motor action, and FRH rule is for generator action. So you can use FRH rule to determine the direction in which voltages are induced into the rotor by the rotating magnetic field, then use FLH rule to determine the direction in which the resulting forces, due to the rotor-bar currents, will act to rotate the rotor.

In Europe, low-voltage three-phase distribution is by means of a four-wire system (three line conductors and a neutral) supplied from a wye-connected transformer secondary.

In North America, low-voltage is supplied from a delta-connected transformer secondary, one phase of which is centre-tapped and earthed (grounded). The single-phase supply to residences is then supplied by that particular phase, giving 240 V line-to-line and 120 V line-to-neutral.

You can tell if you have a delta power when the phase voltage is equal to the line voltage and that you have a star power when the phase voltage =root 3(THE LINE VOLTAGE).

not run in either direction

The relationship between resistance and capacitance in a clc circuit is the capacitive reactance given by XC.

Rorschach

R resistor C capacitance will shift phase since the capacitor will take time to charge.

True

Resistance start-induction run motors are commonly known as split phase. They are only single phase motors. They have 2 sets of windings, the Start winding which is high resistance and low inductance made for thin wire, and the Run winding which is low resistance and high inductance made for thick wire. The 2 windings are set skewed about 30 degrees on a twist. This is to create the angular rotary motion, which is what a motor is all about. On start up both start and run windings are energised. Some form of switch disconnects the start winding when the motor is about 75% up to speed, and only the run winding remains in the circuit. There you have it.....

IP stands for ingress protection. This rating pertains to what size of particle or type and type/strength of water/liquid immersion and duration of exposure an equipment enclosure can be subjected to prior to being compromised.

EEX refers to a level of an equipment enclosure being 'explosion proof'.

The key to this distinction is that equipment that is rated as explosion proof has some method of suppressing sparks or otherwise cooling any process contained in it to ensure that any flamable gas in the environment outside is not ignited. Flamable gas that is in the enclosure may ignite but the EEX enclosure prevents that flame/heat from affecting any flamable gas outside. This is not so with IP ratings.

IP ratings are not concerned with temperature/sparking/flashpoints but with excluding dirt, dust, vapor and water.

Something may be IP rated and not EEX rated; conversely, something EEX is usually IP rated.

When your circuit starts up, your inductor creates an electrical current in the opposite direction. With dc, this effect vanished after the circuit is started. With ac, the current keeps starting and stopping so the inductor keeps creating a current in the opposite direction.

The Voltage of the power supply system is rated at its designed value. If this voltage goes down predetermined set value a under voltage relay can sense the change and then trips off the circuit.