In induction motors, the length of air gap in kept as small as mechanically possible is order to have

Related MCQs

• D.C. machines designed with a large value of air gap length have
• The length cf air gap to be provided in ______ is primarily determined by power factor consideration.
• The operation of a D.C. machine with large air gap lengths is comparatively
• Which ofthe following materials is used in the manufacture of resistance grids to be used in the starters of large motors ?
• In self cooled motors the cooling time constant is about ______ than the heating time constant because cooling conditions are worse at standstill.
• Which of the following in an application of D.C. motors?
• Which of the following problem arises in D.C. motors which are fed from thyristor bridge circuits ?
• With direct water cooling it is possible to have ratings of about
• The efficiency of a machine should be as ______ as possible to reduce the operating cost.
• With conventional hydrogen cooling it is possible to increase the rating of a single unit to