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

The current always has the same amplitude and phase for every part of the circuit
The total current is greater than the sum of the currents for the resistance and capacitance
The total current is less than the sum of the currents for the resistance and capacitance
The total current is equal to the sum of the currents for the resistance and capacitance
None of these

ANSWER DOWNLOAD EXAMIANS APP

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

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

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
Which one of the following is a direct statement of Ohm's law?

The total resistance of a parallel circuit is less than the value of the smallest resistance
The algebraic sum of currents entering and leaving a point is equal to zero
The algebraic sum of voltages in a loop is equal to zero
The voltage drop across a resistance is proportional to the value of resistance and the amount of current flowing through it
None of these

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage?

The voltage remains at one polarity but changes value periodically
The voltage remains at one polarity and at a steady level
None of these
The voltage causes current to flow in two directions at the same time
The voltage reverses polarity periodically

ANSWER DOWNLOAD EXAMIANS APP