M3 Electrical Fundamentals Sub-Module No 11 (Quiz No:1)

Inductance

Quiz

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1. The primary aspect of the operation of a coil is its property to oppose any change in current through it. This property is called-----------------?
   1.   Transister
   2.   Capacitance
   3.   Inductance
2. If more turns are used on the coil, meter deflection is------------------ and is proportional to the number of turns (n) ?
   1.   Less
   2.   Greater
   3.   Constant
3. It opposes the rate of change of current flowing through it due to the build up of self-induced energy within its magnetic field ?
   1.   Saturation current
   2.   Inductor
   3.   Capacitance
4. It is a qualitative law that specifies the direction of induced current but says nothing about its magnitude ?
   1.   Lenz's law
   2.   Electromagnetic induction
   3.   Faraday’s law
5. Eddy currents flow in closed loops within conductors, in planes------------------- to the magnetic field ?
   1.   Horizontal
   2.   Perpendicular
   3.   Longitudinal
6. They are also used in electronic filters to separate signals of different frequencies ?
   1.   Transister
   2.   Resistors
   3.   Inductors
7. They are used to block ac while allowing dc to pass, designed for this purpose are called ---------------?
   1.   Transister
   2.   Chokes
   3.   Capacitor
8. The permeability of ferromagnetic materials is------------------, but depends on h ?
   1.   Not Constant
   2.   Constant
   3.   Decreases
9. Eddy currents are also called ------------------?
   1.   Foucault currents
   2.   Saturation current
   3.   Self-induction
10. It is also called a choke ?
    1.   Capacitance
    2.   Transister
    3.   Inductor