Electrical Machines The use of double squirrel cage winding on the rotor provides low noise. higher efficiency. reduced starting torque. a large starting torque. low noise. higher efficiency. reduced starting torque. a large starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A transformer core is made up of a silicon steel laminations which has maximum flux density 1 Tesla. If it was cold rolled grain oriented its flux density increases to 1.6 Tesla. What is the saving in core size or area due to cold rolled grain oriented process? 60% 40% 38% 68% 60% 40% 38% 68% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an alternator the voltage generated per phase is proportional to flux per pole. frequency of waveform. All of these number of turns in coil. flux per pole. frequency of waveform. All of these number of turns in coil. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Centrifugal switch is absent in which of the single phase induction motor? PSC (permanent split capacitor) motor. Split phase motor. None of these Shaded pole motor. PSC (permanent split capacitor) motor. Split phase motor. None of these Shaded pole motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ideal value of voltage regulation of a device is? ∞ 0 a positive finite value a finite negative value ∞ 0 a positive finite value a finite negative value ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Magnetic field of a DC generator is produced by what? Permanent magnets. None of the options. Electromagnets. Both B and C. Permanent magnets. None of the options. Electromagnets. Both B and C. ANSWER DOWNLOAD EXAMIANS APP
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