cooling is the process of dissipating the armature and field winding losses to a cooling medium circulating within the winding insulation wall

Related MCQs

• The insulation between windings and grounded core and the insulation between the windings of the same phase is called
• The heat dissipating capability of transformers of ratings higher than 30 kVA in increased by providing which of the following ?
• In D.C. machines, ir order to prevent excessive distortion of field form by the armature reaction, the field mmf must be made
• The weight of copper of both armature and field windings decreases with _____ in number of poles.
• In self cooled motors the cooling time constant is about ______ than the heating time constant because cooling conditions are worse at standstill.
• Transformers with a capacity of upto _____ have a cooling radiator system with natural cooling
• Direct water cooling of rotor winding presents
• A practical formula for determining the thickness of insulation between low voltage and high voltage windings is
• Which of the following is the basic consideration in the design of insulation ?
• The laminations of the armature of a D.C. machine are usually _____ thick.