Q.1
14 MarksState different types of starters used and explain any one of them in 3- ø induction motor.
Explain how a rotating magnetic field is produced when a three phase supply is given to three phase winding.
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State different types of starters used and explain any one of them in 3- ø induction motor.
Explain how a rotating magnetic field is produced when a three phase supply is given to three phase winding.
State the difference between slip ring induction motor and squirrel cage induction motor.
State different methods of speed control of three phase induction motor. Explain any two of them.
Derive the equation of starting torque for 3-ø induction motor and obtain condition of maximum starting torque from it.
List the methods of starting of 1-ø induction motor. Draw and explain construction and working of shaded pole induction motor.
A 3-phase, 50 Hz alternator is running at 600 rpm has a 2-layer winding, 12 turns/coil, 4 slots/pole/phase, and coil-pitch of 10 slots. Find the induced EMF per phase if the flux/pole is 0.035 Weber.
Write the difference between stationary armature type and rotating armature type alternator.
A 3-phase star connected alternator is rated at 1600 KVA; 13500 V. The armature effective resistance and synchronous reactance are 1.5 ohms and 30 ohms respectively per phase. Calculate the percentage voltage regulation at full load, 0.8 lagging power factor.
A 6 pole three phase 440 V, 50 Hz. Induction motor develops 8 H.P. at 955 rpm, stator losses amount to 400 watts and the friction losses 0.5 H.P., Calculate
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BE Electrical
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Official Gujarat Technological University (GTU) examination paper for Electrical Machine- II (Summer 2024, B.E. · Electrical Engineering, Sem 5). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.
3150910 Electrical Machine- II
Official GTU PDF · Summer 2024
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