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Fundamentals of Electromagnetism: AC Machines Module 2 Quiz

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Fundamentals of Electromagnetism: AC Machines Module 2 Quiz

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Questions and Answers

What is the closed path followed by magnetic flux called?

Magnetic route

Magnetic circuit (correct)

Flux circuit

Electric circuit

What does Faraday's Law of EMI describe?

Relation between electric and magnetic fields

Relation between voltage and current

Induced electromotive force due to a changing magnetic field (correct)

Energy conservation in electromagnetic systems

Which machine is based on the principle of self-inductance and mutual inductance?

Induction motor

Synchronous machine

DC machine

Transformer (correct)

What is the constructional feature of a 1-ph transformer?

Primary winding only Signup and view all the answers

In a 3-ph induction motor, what does the torque equation describe?

Relation between torque and speed Signup and view all the answers

What is the purpose of the iron core in a coil?

To enhance magnetic flux Signup and view all the answers

What is the force behind the flow of flux or production of flux in a magnetic circuit called?

Magnetomotive force Signup and view all the answers

What is the measure of the 'opposition' the magnetic circuit offers to the magnetic flux called?

Reluctance Signup and view all the answers

What is the conducting power for magnetic lines of force or flux called?

Permeability Signup and view all the answers

What is the magnetic flux per unit area called?

Magnetic flux density Signup and view all the answers

What is the total number of magnetic lines of force in the magnetic field called?

Magnetic flux Signup and view all the answers

What is magnetomotive force (MMF) mathematically equal to?

$NI$ Signup and view all the answers

What is the measure of 'opposition' that the magnetic circuit offers to the magnetic flux mathematically equal to?

$S=\frac{NI}{\phi}$ Signup and view all the answers

What does H stand for in the equation $H=\frac{NI}{l}$?

Magnetic field intensity Signup and view all the answers

What does B stand for in the equation $B=\frac{\text{Magnetic Flux}}{A}$?

$B=\frac{\text{Magnetic Flux}}{A}$ Signup and view all the answers

'Permeability' relates to which two quantities in a magnetic circuit?

$B$ and $H$ Signup and view all the answers