AC source and load modeling in Simulink - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define an AC voltage source with amplitude 230V.

Simulink

ac_source = Simulink.Signal;
ac_source.Value = [1];

Drag options to blanks, or click blank then click option'

A50

B400

C110

D230

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing frequency with amplitude.

Using RMS value instead of peak amplitude.

The amplitude of the AC voltage source is 230 volts, which is standard for many power systems.

2fill in blank

medium

Complete the code to set the frequency of the AC source to 50 Hz.

Simulink

ac_source.Frequency = [1];

Drag options to blanks, or click blank then click option'

A60

B100

C50

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Using amplitude value instead of frequency.

Setting frequency to zero which means DC.

The frequency of the AC source is set to 50 Hz, which is standard in many countries.

3fill in blank

hard

Fix the error in the code to correctly model a resistive load of 10 ohms.

Simulink

load_resistance = [1];

Drag options to blanks, or click blank then click option'

A10

B'10'

C10.0

Dload_resistance

Attempts:

3 left

💡 Hint

Common Mistakes

Using quotes around numbers making them strings.

Assigning variable to itself causing undefined error.

The load resistance should be a numeric value 10, not a string or undefined variable.

4fill in blank

hard

Fill both blanks to create a dictionary mapping load types to their values.

Simulink

loads = { 'resistive': [1], 'inductive': [2] }

Drag options to blanks, or click blank then click option'

A10

B5

C15

D20

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up load values.

Using strings instead of numbers.

The resistive load is 10 ohms and the inductive load is 15 ohms, representing typical load values.

5fill in blank

hard

Fill all three blanks to create a dictionary with load types and their power factors.

Simulink

load_pf = { 'resistive': [1], 'inductive': [2], 'capacitive': [3] }

Drag options to blanks, or click blank then click option'

A1.0

B0.8

C0.9

D0.95

Attempts:

3 left

💡 Hint

Common Mistakes

Assigning incorrect power factor values.

Using values outside the 0 to 1 range.

The resistive load has a power factor of 0.95, inductive 0.8, and capacitive 0.9, representing typical values.