DC Shunt Motor

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Jane Courtney

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Jane Courtney

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Ready to use

4 years, 11 months ago

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Jane Courtney 4 years, 11 months ago

Published this.

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Jane Courtney 4 years, 11 months ago

Gave some feedback: Ready to use

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Jane Courtney 4 years, 11 months ago

Created this.

Name	Status	Author	Last Modified
DC Shunt Motor	Ready to use	Jane Courtney	08/02/2022 17:06
DC Series Motor	Ready to use	Jane Courtney	08/02/2022 17:04
DC Shunt Generator	Ready to use	Jane Courtney	08/02/2022 17:05
DC Series Generator	Ready to use	Jane Courtney	08/02/2022 17:03
Load Flow Analysis - 2bus	Ready to use	Jane Courtney	31/01/2023 15:49
Load Flow Analysis - 3bus	Ready to use	Jane Courtney	31/01/2023 15:49
Load Flow Analysis - 4bus	Ready to use	Jane Courtney	31/01/2023 15:49

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Question statement

The following test data was measured for a separately excited DC machine operating at a speed of $\var{Ntest}\ rpm$ with an open circuit armature:

Field Current

IF [A]

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Armature Voltage

VA [V]

{VA[0]}

{VA[1]}

{VA[2]}

{VA[3]}

{VA[4]}

{VA[5]}

{VA[6]}

{VA[7]}

{VA[8]}

{VA[9]}

{VA[10]}

The intrinsic resistances are:

Field Resistance: $R_F = \var{RF}\ \Omega$

Armature Resistance: $R_A = \var{RA}\ \Omega$

The machine is then connected as a shunt motor to a supply providing $\var{VS}\ V$ . The motor is used to lift a weight which creates a torque of $\var{T}\ Nm$ .

Give any introductory information the student needs.

			Name	Type	Generated Value

Ntest	integer	1400
VAstep	integer	80
VA	list	List of 11 items
RF	integer	648
RA	integer	5

			Name	Type	Generated Value

IF	number	0.9
VS	integer	583
T	integer	18
magnetism	number	3.5468815889
IA	number	5.0748804404
ea	number	557.1428571429
omega	number	50 pi
N	integer	1500
IS	number	5.9748804404

			Name	Type	Generated Value

Automatically regenerate variables?

Name

Data type

Value

A random number between and (inclusive) with step size

Description

Describe what this variable represents, and list any assumptions made about its value.

Can an exam override the value of this variable?

Generated value: `integer`

1400

This variable doesn't seem to be used anywhere.

Parts

Magnetism Gap-fill
1. Gap Magnetism Number entry
  Add
1. Step Information only
Current Gap-fill
1. Gap Current Number entry
  Add
1. Step Information only
Speed Gap-fill
1. Gap Speed Number entry
  Add
1. Step Information only

Gap-fill

Ask the student a question, and give any hints about how they should answer this part.

What is the magnetism on the machine?

$k_a \phi =$ Magnetism

Advice

Give a worked solution to the whole question.

Use this tab to check that this question works as expected.

There was an error which means the tests can't run:

Part	Test	Passed?
Gap-fill
Gap-fill		Hasn't run yet
Number entry
Number entry		Hasn't run yet
Information only
Gap-fill
Gap-fill		Hasn't run yet
Number entry
Number entry		Hasn't run yet
Information only
Gap-fill
Gap-fill		Hasn't run yet
Number entry
Number entry		Hasn't run yet
Information only

This question is used in the following exams:

Electrical Energy Systems Final Exam by Jane Courtney in Jane's workspace.
Problem Solving Assessment I by Jane Courtney in Jane's workspace.
DC Machines - Practice by Jane Courtney in Jane's workspace.
AC Exam by Jane Courtney in Jane's workspace.
Electrical Energy Systems 2.1 Final Exam by Jane Courtney in Jane's workspace.
TEST by Jane Courtney in Jane's workspace.
Electrical Energy Systems Exam by Jane Courtney in Jane's workspace.
Electrical Energy Systems 2.1 Exam by Jane Courtney in Jane's workspace.
TU821 Electrical Energy Systems Exam by Jane Courtney in Jane's workspace.

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Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

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Checkpoint description

Jane Courtney 4 years, 11 months ago

Jane Courtney 4 years, 11 months ago

Jane Courtney 4 years, 11 months ago

Error in variable testing condition

Error

Warning

Generated value: `integer`

Parts

Gap-fill

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DC Shunt Motor

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

Feedback

History

Comment

Checkpoint description

Jane Courtney 4 years, 11 months ago

Jane Courtney 4 years, 11 months ago

Jane Courtney 4 years, 11 months ago

Error in variable testing condition

Error

Warning

Generated value: integer

Parts

Gap-fill

Generated value: `integer`