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.
DC GeneratorsDC MotorsLosses and Testing of DC Machines
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Part 2 of the syllabusपाठ्यक्रम भाग 2Unit-wise coaching with notes and doubt classes.
Single-Phase TransformersThree-Phase Transformers and Autotransformers
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Unit tests & assignmentsयूनिट टेस्टRegular tests in the university / board pattern.
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Semester 3 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 · 5 chapters · 26 topics
01DC Generators
6 टॉपिक+
- Construction of DC machines
- EMF equation
- Lap and wave windings
- Types of DC generators
- Armature reaction and commutation
- Characteristics of DC generators
02DC Motors
5 टॉपिक+
- Principle and back emf
- Torque equation
- Types and characteristics of DC motors
- Speed control methods
- Three-point and four-point starters
03Losses and Testing of DC Machines
4 टॉपिक+
- Losses in DC machines
- Efficiency and condition for maximum efficiency
- Swinburne's test
- Brake test and Hopkinson's test (introduction)
04Single-Phase Transformers
6 टॉपिक+
- Construction and types
- EMF equation and turns ratio
- Phasor diagrams on no load and load
- Equivalent circuit
- OC and SC tests
- Voltage regulation and efficiency, all-day efficiency
05Three-Phase Transformers and Autotransformers
5 टॉपिक+
- Three-phase transformer connections
- Vector groups (Dyn11)
- Parallel operation
- Autotransformer and copper saving
- Cooling of transformers
About this course
आप यह कर पाएँगे
- Explain the construction, EMF equation and characteristics of DC generators
- Explain the working, torque, characteristics, speed control and starting of DC motors
- Calculate losses and efficiency of DC machines and explain Swinburne's test
- Explain the construction, EMF equation, equivalent circuit, regulation and efficiency of single-phase transformers
- Explain three-phase transformer connections, parallel operation and autotransformers
यह किसके लिए है
- Diploma Electrical Engineering students of Semester 3 (BTEUP)
- Students preparing for JE (Electrical) and electrician-level exams
आपको क्या चाहिए
- Basic electricity and magnetism (Faraday's laws, magnetic circuits)
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-I Lab; this course covers the theory paper.
Are numericals included?
Yes. EMF equation, back emf, speed, efficiency and regulation problems are solved.
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.
