Electronic Principles
What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with an inductor that has a reactance of 200 W?

88.8 ohm
77.7 ohm
224 ohm
89.3 ohm
None of these

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
Which one of the following statements is true for the impedance of a series RC circuit?

None of these
The impedance is greater than either the resistance or capacitive reactance but less than their sum
The impedance is less than the sum of the resistance and capacitive reactance
The impedance is greater than the sum of the resistance and capacitive reactance
The impedance is equal to the sum of the resistance and capacitive reactance

ANSWER DOWNLOAD EXAMIANS APP

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
Hysteresis is most apparent when the core material is saturated
None of these
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

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

ANSWER DOWNLOAD EXAMIANS APP