Speed regulation of DC shunt motor is calculated by ratio of differenc – McqOptions

MCQOPTIONS

1.	Speed regulation of DC shunt motor is calculated by ratio of difference of full load speed and no-load speed with full load speed.
A.	True
B.	False
Answer» C.

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400-V dc shunt motor takes a current of 5.6 A on no-load and 68.3 A on full-load. Armature reaction weakens the field by 3%. What is the ratio of full-load speed to no-load speed? Given: Ra = 0.18 Ω, brush voltage drop= 2 V, Rf = 200 Ω.
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