Electrical Machines If the air gap of IM is increased, ____________ will increase. speed. magnetizing current. air gap flux. power factor. speed. magnetizing current. air gap flux. power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature resistance of the dc motor is generally of the range 50 ohm. 100 ohm. 0.5 ohm. 0.1 ohm. 50 ohm. 100 ohm. 0.5 ohm. 0.1 ohm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The supply voltage to an induction motor is reduced by 10%. By what percentage, approximately, will the maximum torque decrease? 40% 10% 5% 19% 40% 10% 5% 19% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machines internal characteristics are plotted between Vt vs load current Eg vs load current Vt vs Ia Eg vs Ia Vt vs load current Eg vs load current Vt vs Ia Eg vs Ia ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The flux involved in the emf equation of a transformer has maximum value. average value. rms value. total value. maximum value. average value. rms value. total value. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What does the use the of height flux density value in transformer design lead to? Increase in weight/KVA. Decrease in weight/KVA. Reduced copper loss. Reduced iron loss. Increase in weight/KVA. Decrease in weight/KVA. Reduced copper loss. Reduced iron loss. ANSWER DOWNLOAD EXAMIANS APP
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