Electrical Machines A 4 pole dynamo with wave wound armature has 51 slots contains 20 conductors in each slot. If induced emf 357 Volts and speed is 8500 rpm, flux per pole will be 3.5 mWb. 1.2 mWb. 1.4 mWb. 2.7 mWb. 3.5 mWb. 1.2 mWb. 1.4 mWb. 2.7 mWb. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following machines have highest power factor with respect to magnetizing current? Open slot type machines. Closed slot type machines. Any of the above. Semi closed slot type machine. Open slot type machines. Closed slot type machines. Any of the above. Semi closed slot type machine. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Flux density under leading pole tips in case of generator will None of these increase either increase or decrease decrease None of these increase either increase or decrease decrease ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of rotation of a DC motor can be determined by Lenz's law. Fleming's right hand rule. Fleming's left hand rule. Ampere's law. Lenz's law. Fleming's right hand rule. Fleming's left hand rule. Ampere's law. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following represents the pitch factor? Cos α² sin (α/2) Cos α Cos (α/2) Cos α² sin (α/2) Cos α Cos (α/2) ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the highest possible speed of turbo alternators? 3000 rpm 1500 rpm 4000 rpm 1000 rpm 3000 rpm 1500 rpm 4000 rpm 1000 rpm ANSWER DOWNLOAD EXAMIANS APP
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