Electronic Principles
Doubling the diameter of the coil in an inductor:

multiplies the value of inductance by four
multiplies the value of inductance by two
reduces the value of inductance by one-half
reduces the value of inductance by one-fourth
None of these

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
A high-pass filter:

passes lower-frequency signals and reduces higher-frequency signals
passes higher-frequency signals and reduces lower-frequency signals
increases the level of all frequencies by a significant amount
has no effect on ac signals
None of these

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
Which one of the following statements is true?

There is no meaningful relationship between the power dissipation of a pure capacitor and its operating frequency
Power dissipation of a pure capacitor increases with operating frequency
None of these
Power dissipation of a pure capacitor decreases with operating frequency
All of these

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
The core of an electromagnet is said to be in saturation when:

frequent changes in the direction of current through the coil causes heating effects in the core material
changing the polarity of the current in the coil changes the polarity of the magnetic field around the core
None of these
an increase in current through the coil causes no further increase in the mmf
the core is permitted to move freely within the coil

ANSWER DOWNLOAD EXAMIANS APP