Electrical Machines If a DC Series motor is connected across an AC supply it will burn. not run. run at lower speed. run at normal speed. burn. not run. run at lower speed. run at normal speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which one of the following statement is correct ? In an induction motor if the air gap is increased then its efficiency will improve its speed will reduce its speed will increase its power factor will reduce its efficiency will improve its speed will reduce its speed will increase its power factor will reduce ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s. The armature resistance is 0.5 W and the field winding resistance is 80 W. The external resistance to be added in the armature circuit to limit the armature current to 125% of its rated value is 15.9 Ω 31.1 Ω 15.1 Ω 31.9 Ω 15.9 Ω 31.1 Ω 15.1 Ω 31.9 Ω ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Tap changer is generally provided in power transformer. current transformer. voltage transformer. earthing transformer. power transformer. current transformer. voltage transformer. earthing transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature flux is.............with respect to main field flux or main field poles? rotates opposite direction None of these rotates same direction stationary rotates opposite direction None of these rotates same direction stationary ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A shaded pole single phase induction motor can be used for personal computers as cooling fan tape recorders wet grinders food mixers personal computers as cooling fan tape recorders wet grinders food mixers ANSWER DOWNLOAD EXAMIANS APP
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