Explore topic-wise MCQs in Design Electrical Machines.

This section includes 21 Mcqs, each offering curated multiple-choice questions to sharpen your Design Electrical Machines knowledge and support exam preparation. Choose a topic below to get started.

1.

What is the other name of the shackle insulator?

A. String
B. Hanging
C. Spool
D. Post
Answer» D. Post
Discussion
2.

How many classifications of overhead line insulators are there?

A. 3
B. 4
C. 5
D. 6
Answer» B. 4
Discussion
3.

What is the other name of Polymer Insulator?

A. Moisture insulator
B. Core insulator
C. Composite insulator
D. Mixed insulator
Answer» D. Mixed insulator
Discussion
4.

Glass has lower tensile strength compared to porcelain insulators.

A. True
B. False
Answer» C.
Discussion
5.

What is the dielectric strength, coefficient of thermal expansion of glass with respect to porcelain insulators?

A. High, high
B. High, low
C. Low, low
D. Low, high
Answer» C. Low, low
Discussion
6.

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

A. Between towers and poles
B. Between towers and ground
C. Between towers and conductors
D. Between conductors and ground
Answer» D. Between conductors and ground
Discussion
7.

GLASS_HAS_LOWER_TENSILE_STRENGTH_COMPARED_TO_PORCELAIN_INSULATORS.?$

A. True
B. False
Answer» C.
Discussion
8.

WHAT_IS_THE_DIELECTRIC_STRENGTH,_COEFFICIENT_OF_THERMAL_EXPANSION_OF_GLASS_WITH_RESPECT_TO_PORCELAIN_INSULATORS??$

A. High, high
B. High, low
C. Low, low
D. Low, high
Answer» C. Low, low
Discussion
9.

How many classifications of overhead line insulators are there?$

A. 3
B. 4
C. 5
D. 6
Answer» B. 4
Discussion
10.

What is the other name of Polymer Insulator?$

A. Moisture insulator
B. Core insulator
C. Composite insulator
D. Mixed insulator
Answer» D. Mixed insulator
Discussion
11.

What is the other name of shackle insulator?

A. String
B. Hanging
C. Spool
D. Post
Answer» D. Post
Discussion
12.

How many discs are used in suspension insulators for 220kV?

A. 3
B. 4
C. 8
D. 14
Answer» E.
Discussion
13.

How many types of electrical insulators are present on the basis of voltage application?

A. 2
B. 3
C. 4
D. 5
Answer» B. 3
Discussion
14.

What is the dielectric strength of porcelain insulators?

A. 60 kV/cm
B. 140 kV/cm
C. 50 kV/cm
D. 40 kV/cm
Answer» B. 140 kV/cm
Discussion
15.

What is property of porosity and temperature change in insulating materials?

A. Less, less affected
B. Less, highly affected
C. High, highly affected
D. High, less affected
Answer» B. Less, highly affected
Discussion
16.

How should the properties of strength and dielectric strength in insulating materials?

A. High strength, low Dielectric strength
B. Low strength, low Dielectric strength
C. High strength, high Dielectric strength
D. Low strength, high Dielectric strength
Answer» D. Low strength, high Dielectric strength
Discussion
17.

Insulation Resistance should be high in insulators.

A. True
B. False
Answer» B. False
Discussion
18.

What happens when some serious phenomenon occurs in the insulators?

A. Puncher is produced in the insulator body
B. Insulator body bulges
C. Insulator body bursts
D. Insulator body tears apart
Answer» B. Insulator body bulges
Discussion
19.

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

A. Surges
B. Flashover
C. Arching
D. Grounding
Answer» C. Arching
Discussion
20.

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

A. Between towers and poles
B. Between towers and ground
C. Between towers and conductors
D. Between conductors and ground
Answer» D. Between conductors and ground
Discussion
21.

What is the property of insulating materials?

A. Prevents the unwanted flow of current
B. Allows the unwanted flow of current
C. Increases the unwanted flow of current
D. Decreases the unwanted flow of current
Answer» B. Allows the unwanted flow of current
Discussion