Electrical Machines What is the effect of armature reaction ? None of the options. Armature flux distorts the main field flux. Armature flux weakens the main field flux. Both option B and C. None of the options. Armature flux distorts the main field flux. Armature flux weakens the main field flux. Both option B and C. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 240 V dc series motor takes 40 A when giving its rated output at 1500 rpm. Its resistance is 0.3 Ω. The value of resistance which must be added to obtain rated torque at 1000 rpm is 6 Ω 1.9 Ω 2.2 Ω 5.7 Ω 6 Ω 1.9 Ω 2.2 Ω 5.7 Ω ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In synchronous generator V curve is drawn between field current on X-axis and power factor on Y-axis. either of these. field current on Y-axis and armature current on X-axis. field current on X-axis and armature current on Y-axis. field current on X-axis and power factor on Y-axis. either of these. field current on Y-axis and armature current on X-axis. field current on X-axis and armature current on Y-axis. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The primary and secondary windings of a transformer are mechanically linked. conductively linked. inductively linked. electrically linked. mechanically linked. conductively linked. inductively linked. electrically linked. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The maximum power developed in cylindrical synchronous machine is occurs at a load angle of less than 90o. 0o. 90o. Greater than 90o. less than 90o. 0o. 90o. Greater than 90o. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A load of 900 lbs is to be raised with a lift car weighting 855 lbs at a speed of 110 feet per minute, the over balance being 40 % and percentage efficiency 45 %. Find the horse power of the motor without counterweight 170. 150. 160. 180. 170. 150. 160. 180. ANSWER DOWNLOAD EXAMIANS APP
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