Your roadmap · आपका रोडमैप
- 1
Admission & first meetingप्रवेश और पहली मुलाकातEnquire at your nearest NDSS centre, meet the teacher, fix the batch time and get your study material.
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Part 1 of the syllabusपाठ्यक्रम भाग 1Unit-wise coaching with notes and doubt classes.
Three-Phase Induction MotorsStarting and Speed Control of Induction MotorsAlternators
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Part 2 of the syllabusपाठ्यक्रम भाग 2Unit-wise coaching with notes and doubt classes.
Synchronous MotorsSingle-Phase MotorsSpecial Machines
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Unit tests & assignmentsयूनिट टेस्टRegular tests in the university / board pattern.
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Semester 4 exam (university / board)विश्वविद्यालय / बोर्ड परीक्षाPrevious papers and full revision before the exam.
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Online tests & resultऑनलाइन टेस्ट और रिज़ल्टTake the tests online; your marks and result show in your student login and at the centre.
सिलेबस · पाठ्यक्रम
1 subject · 6 chapters · 29 topics
01Three-Phase Induction Motors
5 टॉपिक+
- Construction: squirrel cage and slip ring
- Rotating magnetic field and synchronous speed
- Slip and rotor frequency
- Torque equation and torque-slip characteristics
- Power flow, losses and efficiency
02Starting and Speed Control of Induction Motors
5 टॉपिक+
- Need of starters
- DOL, star-delta and autotransformer starters
- Rotor resistance starter
- Speed control methods
- Variable frequency drives
03Alternators
5 टॉपिक+
- Construction: salient and cylindrical rotor
- EMF equation, pitch and distribution factors
- Armature reaction
- Voltage regulation by EMF method
- Synchronisation and parallel operation
04Synchronous Motors
5 टॉपिक+
- Principle and why it is not self-starting
- Starting methods
- Effect of excitation, V and inverted V curves
- Synchronous condenser
- Hunting and damper winding
05Single-Phase Motors
5 टॉपिक+
- Double revolving field theory
- Split phase and capacitor start motors
- Capacitor-run and capacitor start-run motors
- Shaded pole motor
- Universal motor
06Special Machines
4 टॉपिक+
- Stepper motor
- AC and DC servo motors
- BLDC motor
- Linear induction motor
About this course
आप यह कर पाएँगे
- Explain the rotating magnetic field, slip, torque and torque-slip characteristics of three-phase induction motors
- Select starters and speed control methods including VFDs for induction motors
- Explain alternator construction, EMF equation, regulation and parallel operation
- Explain synchronous motor starting, V-curves and use as a synchronous condenser
- Explain single-phase induction, universal and shaded pole motors
- Describe special machines such as stepper, servo and BLDC motors
यह किसके लिए है
- Diploma Electrical Engineering students of Semester 4 (BTEUP)
- Students preparing for JE (Electrical) exams
आपको क्या चाहिए
- Electrical Machines-I of Semester 3
Online tests & result
Practice and unit tests online; marks and result show in your student login and at the centre.
Student login →
सवाल
Is the lab separate?
Yes. Machine tests are done in the Electrical Machines-II Lab; this course covers the theory paper.
Are VFDs and BLDC motors included?
Yes. Modern drives and special machines are covered as per the revised syllabus.
Is this course based on the BTEUP syllabus?
Yes. The units follow the BTEUP (Board of Technical Education, Uttar Pradesh) diploma syllabus. If your polytechnic follows a different board or a revised scheme, the centre teaches your own syllabus.
