Mcqs

Design of Electrical Machines Mcqs

Our 1000+ Design of Electrical Machines MCQs (Multiple Choice Questions and Answers) focus on all areas of Design of Electrical Machines covering 100+ topics. These topics are chosen from a collection of the most authoritative and best reference books on the Design of Electrical Machines. One should spend 1 hour daily practicing these MCQs for 2-3 months to learn and assimilate the Design of Electrical Machines subject comprehensively. This way of systematic learning will prepare anyone easily for Design of Electrical Machines exams, contests, online tests, quizzes, MCQ-tests, viva-voce, interviews, and certifications.

 

Design of Electrical Machines Multiple Choice Questions Highlights

  • 1000+ Multiple Choice Questions & Answers (MCQs) in Design of Electrical Machines with a detailed explanation of every question.
  • These MCQs cover theoretical concepts, true-false(T/F) statements, fill-in-the-blanks, and match the following style statements.
  • These MCQs also cover numerical as well as diagram-oriented MCQs.
  • These MCQs are organized chapterwise and each Chapter is further organized topicwise.
  • Every MCQ set focuses on a specific topic of a given Chapter in the Design of Electrical Machines Subject.

 

Who should Practice Design of Electrical Machines MCQs?

  • Students who are preparing for college tests and exams such as mid-term tests and semester tests on Design of Electrical Machines.
  • Students who are preparing for Online/Offline Tests/Contests in Design of Electrical Machines.
  • Students who wish to sharpen their knowledge of the Design of Electrical Machines Subject.
  • Anyone preparing for Aptitude test in Design of Electrical Machines.
  • Anyone preparing for interviews (campus/off-campus interviews, walk-in interviews, and company interviews).
  • Anyone preparing for entrance examinations and other competitive examinations.
  • All - Experienced, Freshers and College / School Students.
Latest Popular
Q:

The frame size is designated by a number which is its centre height expressed in mm.

A) true B) false
 
Answer & Explanation Answer: A) true

Explanation: The IEC 72 lists a coherent range of main dimensions with the central heights ranging between 56-1000 mm. The frame size is designated by a number which is its centre height expressed in mm. The frame designated 180 has a centre height of 180 mm.

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Category: Electronics & Electrical MCQs
Sub Category: Design of Electrical Machines Mcqs

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Q:

What is the range of the central heights used in the standard frames?

A) 50-1000 mm B) 90-1000 mm
C) 100-1000 mm D) 56-1000 mm
 
Answer & Explanation Answer: D) 56-1000 mm

Explanation: The modern motors of small and medium sizes are built with standard frame sizes as specified in IEC 72. The IEC 72 lists a coherent range of main dimensions with the central heights ranging between 56-1000 mm.

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Category: Electronics & Electrical MCQs
Sub Category: Design of Electrical Machines Mcqs

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Q:

What is the value of the alternative core lengths below which variation in rating can be obtained?

A) 0.7 * length B) 0.4 * length
C) 0.3 * length D) 0.7 * length or 0.5 * length
 
Answer & Explanation Answer: D) 0.7 * length or 0.5 * length

Explanation: The variation in the ratings can be obtained using alternative core lengths. The value of the alternative core lengths below 0.5 * length or 0.7 * length provides the variation in the ratings.

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Category: Electronics & Electrical MCQs
Sub Category: Design of Electrical Machines Mcqs

38
Q:

How can the variation in ratings be obtained?

A) alternative windings B) alternative core lengths
C) alternative pole pitch D) alternative pole length
 
Answer & Explanation Answer: B) alternative core lengths

Explanation: The frame is a mechanical structure required to house a stator of given outside diameter, housing the bearings, end covers, terminal box and maximum length. The variation in the ratings can be obtained using alternative core lengths.

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Category: Electronics & Electrical MCQs
Sub Category: Design of Electrical Machines Mcqs

42
Q:

What is the frame used in the standard frames?

A) set of standard values B) mechanical structure required to house a rotor of given outside diameter
C) mechanical structure required to house a stator of given outside diameter D) mechanical structure required to house a stator of given outside length
 
Answer & Explanation Answer: C) mechanical structure required to house a stator of given outside diameter

Explanation: The frame is a mechanical structure required to house a stator of given outside diameter. The frame also includes housing the bearings, end covers, terminal box and maximum length.

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Category: Electronics & Electrical MCQs
Sub Category: Design of Electrical Machines Mcqs

67
Q:

What is the factor which is by modern motors which are into a series of standard frames?

A) current rating B) voltage rating
C) power rating D) output rating
 
Answer & Explanation Answer: C) power rating

Explanation: The modern motors for industrial applications is concentrated into a series of standard frames. The standard frames are used to cover a wide range of power ratings.

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Category: Electronics & Electrical MCQs
Sub Category: Design of Electrical Machines Mcqs

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Q:

The core length should be high to obtain high short circuit ratio.

A) true B) false
 
Answer & Explanation Answer: A) true

Explanation: The core length is directly proportional to the short circuit ratio. If high short circuit ratio is required, high core length should be used.

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Category: Electronics & Electrical MCQs
Sub Category: Design of Electrical Machines Mcqs

49
Q:

What is the relationship between the diameter and number of poles?

A) diameter is directly proportional to the number of poles B) diameter is indirectly proportional to the number of poles
C) diameter is directly proportional to the square of the number of poles D) diameter is indirectly proportional to the square of the number of poles
 
Answer & Explanation Answer: A) diameter is directly proportional to the number of poles

Explanation: The number of poles is one of the factors involved in the separation of D and L in the synchronous machines. The number of poles is directly proportional to the diameter.

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