Explore topic-wise MCQs in Engineering.

Amplitude is the maximum value of a voltage or current.

A 1 kHz signal has a period of 1 ms.

A ramp is the type of waveform characterized by a non-linear increase or decrease in voltage or current.

The instantaneous value is the voltage or current value of a waveform at its peak.

Duty cycle is the characteristic of a pulse waveform that indicates the high time versus the low time.

The length of a phasor represents the amplitude.

Periodic is characterized by a repetition at fixed time intervals.

The duty cycle of a pulse waveform with a pulse width of 10 s and a period of 100 s is 25%.

The angular position of a phasor represents the angle of the sine wave with respect to a reference.

The designation rms means repetitions measured per second.

The unit of frequency is the hertz.

Average value of a sine wave is 0.707 times the peak value.

In order to get maximum power transfer from a capacitive source, the load must have an impedance that is the complex conjugate of the source impedance.

Thevenin's theorem provides a method for the reduction of any ac circuit to an equivalent form consisting of an equivalent current source in parallel with an equivalent impedance.

One circuit is equivalent to another, in the context of Thevenin's theorem, when the circuits produce the same voltage.

Norton's theorem provides a method for the reduction of any ac circuit to an equivalent form consisting of an equivalent voltage source in series with an equivalent impedance.

A Thevenin ac equivalent circuit always consists of an equivalent ac voltage source and an equivalent capacitance.

A free electron is a valence electron that has broken away from its parent atom.

Resistance limits the current.

A voltmeter is connected across the current path.

Watt's law states the relationships of power to energy.

The watt is the unit of power.

A resistor normally opens when it burns out.

Energy equals power multiplied by time.

An open circuit is one that has a complete current path.

A neutral atom is one with an equal number of protons and electrons.

A battery is one type of power supply that converts chemical energy into electrical energy.

The power rating of a resistor determines the minimum power that it can handle safely.

Power rating is related to resistance value.

The superposition theorem is useful for circuit analysis only in ac circuits.

An equivalent circuit is one that produces the same voltage and current to a given load as the original circuit that it replaces.

If you know the current anywhere in a series circuit, you know the current everywhere in a series circuit.

The joule is a unit of energy.

The term series opposing means that sources are in series with opposite polarities.

The capacity of a battery is measured in milliamperes.

Energy is equal to power multiplied by voltage.

In a series RLC circuit, the current is minimum at resonance.

A short in a series circuit prevents current.

At series resonance, the inductive reactance and capacitive reactance are never equal.

A lower Q produces a narrower bandwidth.

A series circuit acts as a voltage divider.

A series circuit acts as a current divider.

A parallel circuit acts as a current divider.

Addition of resistors in parallel increases total resistance and decreases total current.

X_L and X_C have opposing effects in an RLC circuit.

Generally, the mesh current method results in fewer equations than the node voltage method.

Second-order determinants are evaluated by subtracting the signed cross-products.

The mesh method can be applied to circuits with any number of loops.

The total resistance for two resistors in parallel is equal to the sum of the two resistors.

The total current divides among parallel resistors in a manner directly proportional to the resistance values.