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shivam guptaEnlightened

Asked: June 23, 2022In: Education

How should be the value of field mmf to prevent excessive distortion of field form by armature reaction in an electric machine? a) large compared to armature mmf b) small compared to armature mmf c) zero d) large or small compared to armature mmf

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shivam guptaEnlightened

Asked: June 23, 2022In: Education

Which of these will increase with an increase in the number of poles? a) Weight of field copper b Number of commutator segments c) Overall diameter of machine d) Weight of armature copper

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shivam guptaEnlightened

Asked: June 23, 2022In: Education

What is the relation between hysteresis and the number of poles? a) hysteresis loss decreases with an increase in number of poles b) hysteresis loss increases with an increase in number of poles c) hysteresis loss remains constant with an increase in number of poles d) hysteresis loss may increase or decreases with an increase in number of poles

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shivam guptaEnlightened

Asked: June 23, 2022In: Education

.What are the different types of interpoles in DC electric machines? a) Parallel sided and Tapered b) Open and closed c) Single layer and double layer d) Armature and field

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shivam guptaEnlightened

Asked: June 23, 2022In: Electric Battery

What kind of layer winding in an electric machine occupies the whole slot by one coil side of the coil? a) Single layer b) Double layer c) Single layer or Double layer d) Mixture of single layer and double layer

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shivam guptaEnlightened

Asked: June 23, 2022In: Education

How will high specific loading according to rotating electric machine affect the efficiency? a) Efficiency increases b) Efficiency decreases c) Efficiency may increase or decrease d) Efficiency is not affected

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shivam guptaEnlightened

Asked: June 23, 2022In: Education

How will be the size and cost of a rotating electric machine that has a higher output coefficient be? a) small size and more cost b) small size and less cost c) large size and more cost d) large size and less cost

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shivam guptaEnlightened

Asked: June 23, 2022In: Education

Which of the following is the same as the transformer emf? a) Pulsational emf b) Induction emf c) Interactional emf d) Motional emf

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shivam guptaEnlightened

Asked: June 23, 2022In: Education

What process takes place in an electric machine when stationary is kept in a time-varying field? a) Energy conversion b) Energy transference c) Rotation of coil d) Movement of coil

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shivam guptaEnlightened

Asked: June 23, 2022In: Education

Which of the following is used to connect the armature conductors to the commutator? a) vee-ring b) Equalizer ring c) Banding d) Risers

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