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The resistivity of a semiconductor material increases as :

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1.Determine the permeability of magnetic material by plotting its BH curve 2. Measure voltage, current and power in 1-phase circuit with resistive load. 3. Measure voltage, current and power in R-L series circuit. 4.Determine the transformation ratio (K) of 1-phase transformer. 5.Connect single phase transformer and measure input and output quantities. 6.Make Star and Delta connection in induction motor starters and measure the line and phase values.

answered Aug 28, 2018 in Basic electrical and electronics engineering
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Define phase sequence of three phase supply with waveforms. What is normal phase sequence? Which 3 standard colours are used to denote the phase sequence?

answered Aug 14, 2018 in Basic electrical and electronics engineering
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State the four major parts of Transformer and material used for their construction.

asked Aug 12, 2018 in Basic electrical and electronics engineering
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For a balanced three phase star connected load for which line voltage is 230V and per phase resistance and reactance is 6 Ohm and 8 Ohm respectively. Calculate: 1) phase voltage 2) line current 3) power factor 4) total power absorbed

asked Aug 12, 2018 in Basic electrical and electronics engineering
0 answers 38 views

A balanced Delta connected load supplied with 440 V 50 Hz three phase AC supply has R=10 Ohm and L=0.6 mH in is each arm. Calculate line and phase current, active power.

asked Aug 12, 2018 in Basic electrical and electronics engineering
0 answers 103 views

A balanced three phase Delta connected load consists of three resistances each of four ohm's connected to a 400 V 3 phase 50 Hz supply. Find 1) phase voltage, 2) phase current, 3) line current, 4) power consumed.

asked Aug 12, 2018 in Basic electrical and electronics engineering
0 answers 15 views

A balanced three phase star connected load is supplied from a three phase 400V 50 Hz supply. The resistance for per phase is 10 Ohm. Find the value of phase current, line current, power factor and total power consumed.

asked Aug 12, 2018 in Basic electrical and electronics engineering
0 answers 15 views
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Draw the Delta connected three phase system showing all the voltages and currents. Write the power equation.

asked Aug 11, 2018 in Basic electrical and electronics engineering
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What is line voltage and phase voltage? Draw balanced three phase star connected system. Show all the voltages and currents.

asked Aug 11, 2018 in Basic electrical and electronics engineering
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