Electronic Principles
Which one of the following statements best describes magnetic hysteresis?

Hysteresis is the amount of magnetic flux that is not confined to the core material of an electromagnet
Hysteresis is most apparent when the current through the coil of an electromagnet changes frequently
None of these
Hysteresis is most apparent when the core material is saturated
Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
Current is

None of these
The number of free electrons in an atom
The flow of charged particles through a material
An imbalance of electrical charges
The force that causes electrons to flow

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
Which one of the following statements is true for resistance in a parallel circuit?

None of these
The total resistance of a parallel circuit is equal to the total voltage
The total resistance in a parallel circuit is equal to the average value of the individual resistances
The total resistance is equal to the sum of the individual resistances in a parallel circuit.
The total resistance of a parallel circuit is always less than the value of the smallest resistance

ANSWER DOWNLOAD EXAMIANS APP