Electronic Principles
When a series RLC circuit is operating at its resonant frequency:

capacitive reactance is greater than the inductive reactance
None of these
inductive reactance is greater than the capacitive reactance
the difference between inductive and capacitive reactance is equal to the resistance
inductive reactance is equal to the capacitive reactance

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

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
frequent changes in the direction of current through the coil causes heating effects in the core material
None of these
the core is permitted to move freely within the coil

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Electronic Principles
Which one of the following is a statement of KirchhofFs voltage law?

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

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Electronic Principles
When applying a square waveform to a capacitor, the circuit tends to:

peak the current and round off the voltage waveforms
peak both the voltage and current waveforms
round off both the voltage and current waveforms
None of these
peak the voltage and round off the current waveforms

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