40 Questions
The root mean square (rms) voltage is equal to the peak voltage (Vp) for sinusoidal voltages.
False
A function generator can only produce repetitive waveforms.
False
The signal period is directly proportional to its frequency.
False
A sawtooth wave can be generated by a function generator.
True
The frequency of a signal is measured in seconds.
False
The impedance of a two-terminal network can be expressed as Z = V/I, where V is the complex voltage and I is the complex current.
True
A function generator can generate a sinusoidal signal with a fixed amplitude and frequency.
False
The phase angle of a waveform can be measured using a single channel of an oscilloscope.
False
The time equation for a sinusoidal signal can be written as V = Vm sin(ωt + Ф).
True
A frequency meter can be used to measure the RMS voltage of a signal.
False
The phase angle between the current and the applied voltage is zero when the impedance of the circuit is purely resistive.
True
The oscilloscope can be used to measure the impedance of a circuit directly.
False
The frequency of the signal has no effect on the phasor diagram of an RLC circuit.
False
The average power in an RLC circuit is zero when the phase angle between the voltage and current is 90°.
True
A dual beam oscilloscope can be used to display two waveforms with different frequencies.
True
The phase angle Ф in a series RC circuit is given by Ф=tan-1(VR/VC)
False
The current I in a series RL circuit leads the voltage v by Ф
False
The impedance of a series RC circuit is given by |v|=√(VR^2+VC^2)
True
The oscilloscope is used to measure the frequency of the signal in the experiment
False
The phase angle Ф in a series RL circuit is given by Ф=tan-1(XL/R)
True
The oscilloscope can only be used to study the frequency of a waveform.
False
The unit of capacitance is measured in Henry (H).
False
The peak-to-peak amplitude of a waveform is equal to twice the peak amplitude.
True
A sinusoidal voltage can be defined by the formula V = Vp sin(ωt).
False
Mutual induction occurs when a coil induces a voltage in itself due to changes in its own current.
False
The inductance of a coil is directly proportional to the magnitude of the current flowing through it.
False
The oscilloscope can display non-periodic waveforms.
True
The RMS voltage of a sinusoidal waveform is equal to the peak voltage divided by the square root of 2.
True
The units of capacitance range from pF (10−12 F) to kF (10^3 F).
True
The induced voltage created by the changing current has the effect of aiding the change in current.
False
The SI unit of electrical resistance is the volt.
False
A capacitor is a device that produces electric current.
False
Capacitance is expressed as the ratio of the electric charge (Q) to the potential difference (V).
True
The farad is the SI unit of electrical resistance.
False
An ideal capacitor is characterized by multiple constant values for its capacitance.
False
A capacitor is a device that adds inductance to a circuit.
False
The effect of a capacitor is known as inductance.
False
The reciprocal quantity of electrical resistance is electrical conductance.
True
The ohm is the SI unit of capacitance.
False
Capacitance exists only between two electrical conductors in proximity.
False
Test your understanding of sinusoidal voltages, including rms voltage and frequency. Learn about the relationship between signal period and frequency in electric circuits.
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