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 5.7 Ω 1.9 Ω 6 Ω 2.2 Ω 5.7 Ω 1.9 Ω 6 Ω 2.2 Ω ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Series field consists of--------number of turns and ---------- conductors respectively less and thick less and thin large and thin large and thick less and thick less and thin large and thin large and thick ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the field circuit of a DC shunt motor is opened The motor will attain dangerously high speed. DC Shunt Motor The speed of motor will be reduced. The armature current will reduce. The motor will attain dangerously high speed. DC Shunt Motor The speed of motor will be reduced. The armature current will reduce. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Exciting current of an induction motor is lesser than power transformer. equal as power transformer. higher than power transformer. none of these. lesser than power transformer. equal as power transformer. higher than power transformer. none of these. ANSWER DOWNLOAD EXAMIANS APP
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 Universal motors are used in cranes traction All of these food processing cranes traction All of these food processing ANSWER DOWNLOAD EXAMIANS APP
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