Inductance Quiz | Inductance Short Questions and Answers

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Questions
41 On a schematic, dashed lines between two vertical coils usually mean the transformer has:
A a ferrite core
B an iron core
C an air core
D a nonmetallic core

Answer: a ferrite core
42 What is hysteresis?
A lag between cause and effect
B lead between cause and effect
C lead between voltage and current
D lag between voltage and current

Answer: lag between cause and effect
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43 What is magnetic flux?
A the number of lines of force in teslas
B the number of lines of force in maxwells
C the number of lines of force in flux density
D the number of lines of force in webers

Answer: the number of lines of force in webers
44 The units for inductance is _________ and capacitance is ___________
A Henry, Faraday
B Henry, Coulomb
C Coulomb, Faraday
D Faraday, Henry

Answer: Henry, Faraday
45 The Inductor doesn’t allow sudden changes in ___________
A Current
B Inductance
C Resistance
D Voltage

Answer: Current
46 If the current in one coil is steady, what happens to the mutual inductance?
A Halves
B Zero
C Infinity
D Doubles

Answer: Zero
47 The electrical energy consumed by a coil is stored in the form of:
A a magnetic field
B an electrostatic field
C an electrical field
D a force field

Answer: a magnetic field
48 As current travels within a conductor:
A the magnetic field aids the current
B a magnetic field is developed around it
C the wire tries to point north
D an electrostatic field opposes the current

Answer: a magnetic field is developed around it
49 What type of device consists of a coil with a moveable iron core?
A solenoid
B reed switch
C relay
D armature

Answer: solenoid
50 A series RL filter circuit with an output across the inductor will result in what type of filtering?
A passing of the higher frequencies
B passing of the lower frequencies
C blocking of the higher frequencies
D blocking of a certain range of frequencies

Answer: passing of the higher frequencies

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