Hamad D.C. Generators 09/08/2020 A. 150 V B. less than 150 V C. greater than 150 V D. none of the above Related Mcqs: The bearings used to support the rotor shafts are generally______________?A. ball bearings B. bush bearings C. magnetic bearmgs D. needle bearings... Eddy currents are induced in the pole shoes of a D.C. machine due to______________?A. oscillating magnetic field B. pulsating magnetic flux C. relative rotation between field and armature D. all above... Magnetic field in a D.C. generator is produced by_______________?A. electromagnets B. permanent magnets C. both A. and B. D. none of the above... 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_______________?A. 150 V B. 175 V C. 240 V D. 290 V... If a self excited D.C. generator after being installed, fails to build up on its first trial run, the first thing to do is to______________?A. reverse the field connections B. increase the field resistance C. increase the speed of primemover D. check armature insulation resistance...
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