Related MCQ Question

• The emf induced in a conductor rotating in a bipolar field is
• A conductor is rotating within a magnetic field. At which of the position do the peak voltages occur?
• In a dc motor the windage loss is proportional to
• Which of the following are the variable losses in a rotating machine?
• Stray losses are sum of
• The principle of dynamically induced emf is utilized in
• The field coils of a dc generator are usually made of
• Which of the following is not a part of dc machine?
• Laminated yoke in dc motor can reduce
• Pole shoe of a dc machine is laminated for the purpose of 
• The ventilating ducts in most of the dc machines are 
• The armature of a dc machine is laminated
• The commutator of a dc motor serves the purpose of
• Welding generator will have
• The dummy coils in dc machines are provided to
• A homopolar generator usually has 
• The commutator pitch for simplex lap winding is
• The commutator pitch for simplex wave winding is equal to
• In a dc machine, fractional pitch winding is employed to
• A frog leg winding is used in a dc machine to eliminate 
• The reactance voltage of DC Generator is 
• An exciter for turbo generator is a dc  ________ generator.
• Flashing of field of dc generator means
• A dc series generator is employed