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.

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.

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