Basic Electrical Quizz 2

The field is stationary and conductors cut across it is called

• Dynamically induced emf
• Statically induced emf
• Both a and b
• None

The unit of self inductance is

• Farad
• Henry
• Tesla
• None

In a two neighboring coils if current changes in coil1 an emf induced in coil 2 is called

• Self inductance
• Electromagnetism
• MMF
• Mutual inductance

The curve of flux density vs magnetizing force is called

• Hysteresis curve
• Flux density
• Both a and b
• None

Induced emf’s are classified in to

• Magnetically induced and Statically induced emf
• Dynamically induced and statically induced emf
• Both a and b
• None

Generator is an example of _______type of induced EMF

• Dynamically induced emf
• Statically induced emf
• Both a and b
• None

Electromagnetic induction was discovered by__________in the 1830s

• Michael Faraday
• Bell
• Both a and b
• None

A transformer transfer

• Frequency
• Voltage
• Current
• All of the above

Which of the following is not a basic element of a transformer?

• Core
• Primary winding
• Secondary winding
• Mutual flux

In an ideal transformer

• Windings have no resistance
• Core has no losses
• Core has infinite permeability
• All of the above