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Electrical Engineering
Electrical Inductors
Quiz 4
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Q.1
Transformer core are laminated in order to
reduce hysteresis loss
reduce hysteresis & eddy current loss
minimize eddy current loss
Copper loss
Q.2
An Inductor works as a ___________ circuit for DC supply.
Open
Short
Polar
Non-polar
Q.3
Inductor cores can be made of
air
iron
magnetic materials
all of these
Q.4
Inductive reactance is expressed as
1/2πfL
2πfL
f/2πL
X
Q.5
Inductors connected in series will
be the reciprocal of the sum total of inductors for final value of Henrys
be the sum total of inductors for final value of Henrys
be the reciprocal of the sum of reciprocals of each inductor
act as a voltage divider network
Q.6
The rate of change of ? determines the generated EMF in an inductor
voltage and current
current and time
voltage and time
back EMF and current
Q.7
An inductor stores energy
in the skin of the conductor
in the magnetospheric region of the electrons
in the dielectric material
in a magnetic field
Q.8
Your grade for inductors will depend highly on
how much I like you
how much you study
how lucky you are
luck of the draw
Q.9
ELI went to visit ICE and the two really resonated together! As a result, a ???? circuit was born.
Cole-Porter phase invertor
rejector
tank
Dailey-Vincent oscillator
Q.10
Skin effect is a concern
at lower frequencies
cable is exposed to UV rays
at higher frequencies
there are many eddy currents present
Q.11
Skin effects tends to
heat the conductor
cause a huge loss of efficiency
concentrate electrons on the outer edge (skin) of the conductor
cause signal distortion
Q.12
The "Q" of an inductor is expressed in units of
Henries
Faroids
Reluctance
Q has no units
Q.13
An inductor tends to
reject low frequencies
reject high frequencies
pass a band of frequencies
reject a band of frequencies
Q.14
Magnetic coupling is when
magnetic lines link
two magnets get married
two magnets are placed end-to-end
magnets line-up and repel each other
Q.15
The transient response of an inductor is expressed as
T = 1/RL
T = RL
t = R/L
t = L/R
Q.16
The magnetic field can be increased by adding
removing the core
adding a core
decreasing the number of windings
changing the diameter of the wire insulation
Q.17
The unit of measurement for the inductor is
Farad
Henry
George
Jones
Q.18
The force that opposes a rise in current is the
BEMF
EMF
MFF
BPM
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