Electrical Machines In which of the following, voltage regulation may be zero or negative lagging power factor leading power factor unity power factor All of these lagging power factor leading power factor unity power factor All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If dimension of all the parts of a synchorous generator and the number of field and armature turns are double, then generated voltage will change by a factor of 1. 2. 4. 8. 1. 2. 4. 8. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A commutator in DC machines can 1. provide half-wave rectification 2. Provide full-wave rectification 3. convert ac to dc 4. Convert dc to ac 5. provide controlled full-wave rectification From these, the correct answer is 2, 3, 4, 5 1, 2, 3 2, 3 ,5 2, 3, 4 2, 3, 4, 5 1, 2, 3 2, 3 ,5 2, 3, 4 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Stepper motor is used in All of these food processing traction computer printers All of these food processing traction computer printers ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A synchronous generator is feeding a zero power factor (lagging) load at rated current. The armature reaction is magnetizing. ineffective. cross – magnetizing. demagnetizing. magnetizing. ineffective. cross – magnetizing. demagnetizing. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is/are effects of armature reaction? increases the design cost increase the iron loss All of these increase the maintenance and repair increases the design cost increase the iron loss All of these increase the maintenance and repair ANSWER DOWNLOAD EXAMIANS APP
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