Principles of electromagnetism

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The magnetic field created when a current passes through a coil can be reversed by

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What value of EMF would be induced from an alternator with a conductor of 50cm rotating at a velocity of 20m/s within a magnetic flux density of 5 Tesla

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What value of EMF would be induced from an alternator with a conductor of 0.3m rotating at a velocity of 30m/s within a magnetic flux density of 2 Tesla

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For the direction of current shown the north pole is

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Identify from the solenoid the position of the north pole

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What value of EMF would be induced from an alternator with a conductor of 40cm rotating at a velocity of 25m/s within a magnetic flux density of 3 Tesla

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What value of EMF would be induced from an alternator with a conductor of 250mm rotating at a velocity of 20m/s within a magnetic flux density of 4 Tesla

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Which of the following would be the approximate peak value for a supply of 150V rms

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Which of the following would be the approximate rms value for a peak supply of 180 V

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Which of the following would be the frequency for a time period of 50 milli-seconds

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Which of the following would be the frequency for a time period of 10 milli-seconds

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Which of the following would be the frequency for a time period of 25 milli-seconds

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which of the following is the time taken for one cycle of a 400Hz supply

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According to the diagram below y represents

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According to the diagram above X represents

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If the frequency of supply is 1.5kHz, the periodic time is

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If a 0.2m conductor moves at right angles with a velocity of 15m/s though a magnetic flux density of 3T, what is the induced voltage?

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If a 40cm conductor moves at right angles with a velocity of 10m/s though a magnetic flux density of 1.5T, what is the induced voltage?

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If a 60cm conductor moves at right angles with a velocity of 50m/s though a magnetic flux density of 2T, what is the induced voltage?

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If a supply voltage has a value of 240V the r.m.s value is

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Outside a bar magnet the magnetic field goes from

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An AC sine wave has a maximum value:

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From the diagram below the direction of current is said to be

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To calculate the average value of a sine wave the following multiplier should be used?

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To calculate the root-mean-square r.m.s value of a sine wave the following multiplier should be used?

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What principle would we apply to find the magnetic north pole in this solenoid?

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What would be the effect of the two conductors that have the current flowing in the direction shown?

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Which of the following is correct?

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Which of the following numbers would measure the peak to peak voltage?

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Which of the following numbers would measure the periodic time?

2 Electrical Science Quiz am Principles of electromagnetism, erstellt von Vito Martino am 10/05/2014.

Principles of electromagnetism

The magnetic field created when a current passes through a coil can be reversed by

What value of EMF would be induced from an alternator with a conductor of 50cm rotating at a velocity of 20m/s within a magnetic flux density of 5 Tesla

What value of EMF would be induced from an alternator with a conductor of 0.3m rotating at a velocity of 30m/s within a magnetic flux density of 2 Tesla

For the direction of current shown the north pole is

Identify from the solenoid the position of the north pole

What value of EMF would be induced from an alternator with a conductor of 40cm rotating at a velocity of 25m/s within a magnetic flux density of 3 Tesla

What value of EMF would be induced from an alternator with a conductor of 250mm rotating at a velocity of 20m/s within a magnetic flux density of 4 Tesla

Which of the following would be the approximate peak value for a supply of 150V rms

Which of the following would be the approximate rms value for a peak supply of 180 V

Which of the following would be the frequency for a time period of 50 milli-seconds

Which of the following would be the frequency for a time period of 10 milli-seconds

Which of the following would be the frequency for a time period of 25 milli-seconds

which of the following is the time taken for one cycle of a 400Hz supply

According to the diagram below y represents

According to the diagram above X represents

If the frequency of supply is 1.5kHz, the periodic time is

If a 0.2m conductor moves at right angles with a velocity of 15m/s though a magnetic flux density of 3T, what is the induced voltage?

If a 40cm conductor moves at right angles with a velocity of 10m/s though a magnetic flux density of 1.5T, what is the induced voltage?

If a 60cm conductor moves at right angles with a velocity of 50m/s though a magnetic flux density of 2T, what is the induced voltage?

If a supply voltage has a value of 240V the r.m.s value is