DC Generators – Page 7 – HI MCQ!

In D.C. generator the change in voltage when the load is reduced from rated value to zero, expressed as a percent age of rated load voltage, is known as?

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The slight curvature at the lower enr1 of the O.C.C. of a self-excited DC generator is due to?

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A shunt generator can self-excite?

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DC series generator is used?

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In D.C. generators, current to the external circuit from armature is given through?

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If residual magnetism of a shunt generator is destroyed accidentally, it may be restored by connecting its shunt field?

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Two generators A and B have 6-poles each. Generator A has wave wound armature while generator B has lap wound armature. The ratio of the induced e.m.f. is generator A and B will be?

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A shunt generator running at 1000 r.p.m. has generated e.m.f as 200 V. If the speed increases to 1200 r.p.m., the generated e.m.f. will be nearly?

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When two D.C. series generators are running in parallel, an equilizer bar is used?

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The number of armature parallel paths in a two-pole D.C. generator having duplex lap winding is?

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