Electrical Machines A 3-phase, alternator has generated emf per phase of 230 V with 10% 3rd harmonic and 6% 5th harmonic content. Calculate rms line voltage for star connection. 399 V. 100 V. 230.2 V. 50 V. 399 V. 100 V. 230.2 V. 50 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of rotation of a DC motor can be determined by Lenz's law. Ampere's law. Fleming's right hand rule. Fleming's left hand rule. Lenz's law. Ampere's law. Fleming's right hand rule. Fleming's left hand rule. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a dc machine, 1. physically, the brush axis is along the direct axis 2. physically, the brush axis is along the interpolar axis 3. schematically, the brush axis is along the direct axis 4. schematically, the brush axis is along the quadrature axis 5. armaturemmf is directed along the brush axis From these, the correct statements are 2, 3, 5 2, 4, 5 1, 4,5 1 , 3, 5 2, 3, 5 2, 4, 5 1, 4,5 1 , 3, 5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The principal of starting of 3 - Φ IM is similar to synchronous motor. capacitor run IM. transformer with short-circuited secondary. repulsion motor type starting. synchronous motor. capacitor run IM. transformer with short-circuited secondary. repulsion motor type starting. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The voltmeter connected across a generator reads voltage same at no load and at full load (rated). The generator is of the type shunt generator. short - shunt generator. series generator. level compound. shunt generator. short - shunt generator. series generator. level compound. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which type motors are preferred for lathes? Synchronous motor. DC shunt motors. Squirrel Cage induction motor. Either A or B. Synchronous motor. DC shunt motors. Squirrel Cage induction motor. Either A or B. ANSWER DOWNLOAD EXAMIANS APP
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