Steady-State Equivalent Circuit Modeling

An air gap provided in the iron core of an inductor prevents

• core saturation

• hysteresis loss

• flux leakage

• heat generation

Tags

Steady-State

Equivalent

Circuit

Modeling

A cycloconverter can be

• step up

• step down or step up

• step down

• none of these

Tags

Steady-State

Equivalent

Materials in order of decreasing electrical conductivity are

• gold, silver, copper, aluminium, tin

• gold, silver, copper, aluminium, lead

• gold, silver, copper, aluminium

• silver, copper, gold, aluminium

The sum of two or more arbitrary sinusoidal is

• always periodic

•  periodic only if all the sinusoidal are identical in frequency and phase

• never periodic

• periodic under certain conditions

The phenomenon of overlap in converter operation due to

• high value of firing angle

• source resistance

• source inductance

• both source resistance and source inductance~

Draw the steady-state equivalent circuit of a boost converter with an inductor and a resistor in series with a diode and a capacitor in parallel with the load.

Derive the equation of the output voltage and efficiency of the boost converter on the previous question.

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Draw the steady-state equivalent circuit of a buck converter having a series resistor in the input part and an LC circuit connected to its output.

Derive the output voltage equation and the efficiency of the buck converter on the previous question.

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Discuss and differentiate Choppers, cycloconverters, inverters, and converters.

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