Electrical Engineering

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Same frequency as that of primary coil

Only Stator winding is similar in both the cases.

Voltage regulator regulate voltage

If rating is correct, terminal connections are correct, if safety devices are in place, if device is a standard with necessary requrement, it should not be problem to connect a transformer first time.

If, when a relay is energized, you measure 0.05 VAC across a set of normally open contacts, the

A shorted coil or shorted coils in the rotor will cause arcing at the commutator. It should also be noted that if the brushes are damaged badly enough where they make contact with the commutator, this can cause arcing. Oh, and let's not forget that a stuck brush or brush spring will prevent a brush from making proper contact with the commutator. Arcing can result from that, too.

the main function of transformer is to change the magnitude of Voltage. difference between step up and step down is step up will change the input voltage into a larger magnitude of output while step down is vice versa

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what parameter stay the same in LCR circuit ?

No load current is mostly inductive, hence the load current may not be a sine wave

Using Ohm's Law (E = I R) Voltage = Current x Resistance or switch around to get R = E / I:

115 volts / 8 Amperes = 14.375 Ohms

The above is correct for DC current but is close enough to be used for AC current.

Current flow remains the same throughout the circuit.

1.Current in the coil produces a magnetic field

also accept "the coil becomes an electromagnet"

or "the coil is magnetized"

2.The magnet is repelled or attracted

also accept "the field or coil exerts a force on the

magnet"

1.plus 2.minus

3.multiplied by

4.divided by

The RMS value in this case is the amplitude divided by the square root of 2. Approximately 0.7 times the amplitude.

To prevent overheating/damage/fire of the electrical components in a circuit.

Apparent power is VA. Real power is W reactive power is VAR. Under an inductive+resistive load the VA is higher than W

You need to mention the Load connected to find the current.

Current coil carries the current.

Inductive reactance is a resistance by inductors to the change of current flow, and is dependent on the frequency at which the current oscillates. DC current flows in only one direction so an inductor's impedance remains the same.

Rewiring:

1. Obtain the existing documentation, electrical drawing. If you do not have, make one before attempting to rewire.

2. Note down the minute details of the existing drawings, terminal number etc

3. Note down the wire type, sizes.

Carry out the rewiring.

Modification:

1. Obtain the existing documentation, electrical drawing. If you do not have, make one before attempting to rewire. 2. Note down the minute details of the existing drawings, terminal number etc

3. Prepare a modified drawing, with terminal numbers etc.

Carry out modification.

Understand the functionality and ensure you have the same or modified functionality after rewiring or modification. Test the circuit before you hand over to the end user.

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We often see the peak and trough (maximum positive and maximum negative excursions) of the sine wave considered as points of momentarily constant voltage. Those points are at phase angles of 90 degrees and at 270 degrees.