Electrical Machine Design MCQ

Electrical Machine Design MCQ

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  • 21st Feb, 2023

Electrical Machine Design MCQ Questions

Take Electrical Machine Design MCQ Test & Online Quiz to test your Knowledge

Below is the Electrical Machine Design MCQ test that checks your basic knowledge of Electrical Machine Design. This Electrical Machine Design MCQ contains 20 Multiple Choice Questions. You have to select the right answer to the question. apart from this, you can also, download Electrical Machine Design MCQ PDF Completly free.

Electrical Machine Design MCQ Test

1) Which is the major consideration to develop a good electric machine design?

  • A. Durability
  • B.Cost
  • C.Compliance with performance criteria as laid down in specifications
  • D.All of the above

2) D.C. machines designed with a large value of air gap length have ___.

  • A. worst, ventilation
  • B.poor ventilation
  • C.better ventilation
  • D.None of the above

3) Portative electromagnets generally function as holding magnets.

  • A. True
  • B.False

4) Which of the following instruments indicate the instantaneous value of the electrical quantity being measured at the time at which it is being measured ?

  • A. Integrating instruments
  • B.Absolute instruments
  • C.Recording instruments
  • D.Indicating instruments

5) Which of the following is the commonly used type of electromagnets ?

  • A. Flat-faced armature
  • B.Horse shoe
  • C.Flat-faced plunger
  • D.All of the above

6) Wattmeter cannot be designed on the principle of ___.

  • A. electrostatic instrument
  • B.thermocouple instrument
  • C.moving iron instrument
  • D.electrodynamic instrument

7) Is Resistance is measured with the help of potentiometer?

  • A. Yes
  • B.No

8) A Weston synchronoscope is a ___.

  • A. moving coil instrument
  • B.moving iron instrument
  • C.dynamometer instrument
  • D.None of the above

9) The efficiency of a machine should be as ______ as possible to reduce the operating cost.

  • A. high
  • B.low
  • C.either of the above
  • D.None of the above

10) Which of the following methods is used for air cooling of turbo alternators ?

  • A. One-sided axial ventilation
  • B.Two sided axial ventilation
  • C.Multiple inlet system
  • D.All of the above

11) By which of the following methods motor rating for therapy load drives can be determined?

  • A. All of these
  • B.Method of average losses
  • C.Equivalent current method
  • D.equivalent torque method

12) Which off the following methods is most accurate ?

  • A. Equivalent current method
  • B.Equivalent power method
  • C.Equivalent torture method
  • D.Method of average losses

13) The tap changing facility is usually provided on ________ transformers.

  • A. high voltage
  • B.distribution
  • C.current
  • D.All of the above

14) A transformer is considered to have a network or series capacitance due to ___.

  • A. laminated core
  • B.earthling
  • C.intern turn insulation
  • D.surrounding tank

15) Multi step core is used in transformer to ___.

  • A. increase the output
  • B.decrease the cost of core material
  • C.decrease the cost of copper
  • D.increase the efficiency

16) In DC machines air gap is _________ in comparison to that in AC machines.

  • A. very short
  • B.short
  • C.longer
  • D.All of the above

17) What are the factors that decide the choice of specific magnetic loading?

  • A. Maximum flux density in iron parts of machine
  • B.Magnetizing current
  • C.Core losses
  • D.All of the above

18) What are the two types of winding used in the dc machines?

  • A. Lap winding
  • B.Wave winding
  • C.Both A and B
  • D.None of the above

19) CROS cannot be used in _________ rotating machines.

  • A. small
  • B.medium
  • C.large
  • D.All of the above

20) _______ brushes are fragile and cause excessive wear of commutator.

  • A. Natural graphite
  • B.Hard carbon
  • C.Electro graphitic
  • D.Metal graphite

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