Design of Electrical Machines Mock Test 1

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Question 1 of 10

1. What is the total number of design steps for the brushes in DC machines?

Question 1 of 10

Question 2 of 10

2. The number of coils chosen should be minimum in number.

true

false

Question 2 of 10

Question 3 of 10

3. Which among the following is the example of Class B?

Hard fiber

Wood

Inorganic material with adhesives

Impregnated oil

Question 3 of 10

Question 4 of 10

4. What are the characteristics of high conductivity materials based on cost and flexibility?

Low cost, low flexibility

High cost, low flexibility

Low cost, high flexibility

High cost, high flexibility

Question 4 of 10

Question 5 of 10

5. What is ‘Z/Sa’ calculation during design of armatures?

armature slots/conductors

armature poles/slots

armature slots/poles

armature conductors/slots

Question 5 of 10

Question 6 of 10

6. Which material has the highest conductivity of all materials?

Gold

Tungsten

Copper

Silver

Question 6 of 10

Question 7 of 10

7. What is the main cause for the failure of overhead line insulators?

Arching

Flashover

Surges

Grounding

Question 7 of 10

Question 8 of 10

8. Which property of aluminum it the most preferred element?

most abundant element

highly malleable, highly ductile

good conductivity

good corrosion resistant

Question 8 of 10

Question 9 of 10

9. What materials are used as conductors in the Transmission and Distribution sector?

tungsten

silver

carbon

copper

Question 9 of 10

Question 10 of 10

10. In the Transmission and Distribution sector, where should the insulators be placed?

Between towers and ground

Between towers and conductors

Between towers and poles

Between conductors and ground

Question 10 of 10