Electrical Machine MCQ – DC Machine #11

Electrical Machine MCQ – DC Machine #11 (#121 to #130)

Electrical Machine MCQ – DC Machine #11 (#121 to #130)

DC Machine MCQ #11

121) Laminations of core are generally made of
122) The armature of the DC generator is laminated to
123) The commutator segments are connected to the armature conductors using
124) While applying Fleming's right-hand rule to and the direction of induced EMF, the thumb points towards the direction of
125) For a D.C. generator, when the number of poles and the number of armature conductors is fixed, then which winding will give the higher EMF?
126) Copper brushes in DC machine are used
127) In a DC Machine, iron losses are independent of variations in
128) If B is the flux density, I the length of the conductor, and v the velocity of a conductor, then induced EMF is given by
129) In the case of a 4-pole D.C. generator provided with a two-layer lap winding with sixteen coils, the pole pitch will be
130) Armature reaction of an unsaturated DC machine is
Electrical Machine MCQ – DC Machine #11
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