Exam Details
| Subject | power electronic converters-i | |
| Paper | ||
| Exam / Course | computer science and engineering | |
| Department | ||
| Organization | Vardhaman College Of Engineering | |
| Position | ||
| Exam Date | June, 2017 | |
| City, State | telangana, hyderabad |
Question Paper
Hall Ticket No:
Question Paper Code B3302
(AUTONOMOUS) M. Tech I Semester Supplementary Examinations, June 2017
(Regulations: VCE-R15) POWER ELECTRONIC CONVERTERS-I
(Power Electronics and Electric Drives) Date: 07 June, 2017 AN
Time: 3 hours
Max Marks: 70
Answer any FIVE Questions
Each Question carries equal marks
1.
Explain the operation of single phase AC voltage controller with synchronous tap changers.
7M
For a single phase AC voltage controller feeding R-L load the input is 220V rms at 60Hz and load resistance is R=20Ω and inductance is L=50mH, the delay angle is 900, determine:
i. Expression for load current for the first half period
ii. RMS load current
iii. RMS SCR current
7M
2.
Discuss in brief, the effect of source inductance on three phase AC voltage controller.
7M
With a neat circuit and relevant waveforms, explain the operation of three phase AC voltage controller with delta connected resistive load, derive an expression for RMS value of output voltage.
7M
3.
Explain the operation of three phase to three phase cyclo converter pulse) with relevant circuit diagram and waveforms.
7M
The input voltage to a single phase to single phase cyclo converter is 120V at 60 Hz, load resistance is 5 ohm and load inductance is 40mH, frequency of the output voltage is 20Hz, if the converter are operated as semi converters such that and delay angle is αp= 2 determine:
i. RMS value of output voltage
ii. RMS current of each thyristor
7M
4.
Explain the operation of single phase full controlled converter with R-L load and draw the relevant waveforms.
7M
What is the principle of extinction angle control? Explain it in detail.
7M
5.
Explain the principle of three phase PWM rectifier and mention its advantages.
7M
With neat circuit diagram and relevant waveforms, explain the operation of three phase full controlled converter with highly inductive load.
7M
6.
With a neat equivalent circuit and relevant waveforms, explain the operation of Cuk regulator converter.
7M
Design a buck converter to produce an output voltage of 18V across a 10 ohm load resistor, the output voltage ripple must not exceed the DC supply is 48V. The design should be for continuous inductor current. Assume ideal components.
7M
7.
Explain the operation of single phase bridge inverter, draw the relevant waveforms.
7M
Discuss in brief about harmonic injection modulation of voltage control in single phase inverter.
7M
8.
What is boost inverter? Explain the principle and operation of boost inverter.
7M
With a neat circuit and relevant waveforms, explain the operation of three phase bridge inverter in 1200 mode of operation.
7M
Question Paper Code B3302
(AUTONOMOUS) M. Tech I Semester Supplementary Examinations, June 2017
(Regulations: VCE-R15) POWER ELECTRONIC CONVERTERS-I
(Power Electronics and Electric Drives) Date: 07 June, 2017 AN
Time: 3 hours
Max Marks: 70
Answer any FIVE Questions
Each Question carries equal marks
1.
Explain the operation of single phase AC voltage controller with synchronous tap changers.
7M
For a single phase AC voltage controller feeding R-L load the input is 220V rms at 60Hz and load resistance is R=20Ω and inductance is L=50mH, the delay angle is 900, determine:
i. Expression for load current for the first half period
ii. RMS load current
iii. RMS SCR current
7M
2.
Discuss in brief, the effect of source inductance on three phase AC voltage controller.
7M
With a neat circuit and relevant waveforms, explain the operation of three phase AC voltage controller with delta connected resistive load, derive an expression for RMS value of output voltage.
7M
3.
Explain the operation of three phase to three phase cyclo converter pulse) with relevant circuit diagram and waveforms.
7M
The input voltage to a single phase to single phase cyclo converter is 120V at 60 Hz, load resistance is 5 ohm and load inductance is 40mH, frequency of the output voltage is 20Hz, if the converter are operated as semi converters such that and delay angle is αp= 2 determine:
i. RMS value of output voltage
ii. RMS current of each thyristor
7M
4.
Explain the operation of single phase full controlled converter with R-L load and draw the relevant waveforms.
7M
What is the principle of extinction angle control? Explain it in detail.
7M
5.
Explain the principle of three phase PWM rectifier and mention its advantages.
7M
With neat circuit diagram and relevant waveforms, explain the operation of three phase full controlled converter with highly inductive load.
7M
6.
With a neat equivalent circuit and relevant waveforms, explain the operation of Cuk regulator converter.
7M
Design a buck converter to produce an output voltage of 18V across a 10 ohm load resistor, the output voltage ripple must not exceed the DC supply is 48V. The design should be for continuous inductor current. Assume ideal components.
7M
7.
Explain the operation of single phase bridge inverter, draw the relevant waveforms.
7M
Discuss in brief about harmonic injection modulation of voltage control in single phase inverter.
7M
8.
What is boost inverter? Explain the principle and operation of boost inverter.
7M
With a neat circuit and relevant waveforms, explain the operation of three phase bridge inverter in 1200 mode of operation.
7M
Other Question Papers
Subjects
- advanced algorithms
- advanced algorithms laboratory
- advanced data communications
- advanced data structures
- advanced data structures laboratory audit course – i
- advanced mechanics of solids
- advanced mechanisms
- advanced operating systems
- advanced operating systems laboratory
- artificial intelligence and neural networks
- business analytics
- cloud computing
- cloud computing laboratory
- cmos vlsi design
- computer graphics
- computer organization and architecture
- computer vision and pattern recognition
- constitution of india
- cpld and fpga architectures and applications
- cryptography and computer security
- data warehousing and data mining
- datawarehousing and data mining
- design patterns
- digital image processing
- digital systems design
- disaster management
- distributed computing
- distributed databases
- distributed operating systems
- dsp processors and architectures
- embedded linux
- embedded real time operating systems
- embedded systems
- energy conversion systems
- english for research papers writing
- entrepreneurship development
- finite element methods
- fracture, fatigue and creep deformation
- human computer interaction
- image processing
- industrial safety
- information retrieval systems
- information security
- machine learning
- major project phase-i
- major project phase-ii
- microcontrollers for embedded system design
- mini project with seminar audit course – ii
- mobile computing
- mobile satellite communications
- national service scheme
- number theory and cryptography
- object oriented analysis and design
- operations research
- pedagogy studies
- personality development through life enlightenment skills
- power electronic control of dc drives
- power electronic converters-i
- power semi conductor devices
- principles of machine modeling analysis
- research methodology and intellectual property rights
- sanskrit for technical knowledge
- semantic web and social networks
- software engineering principles
- solar, energy and applications
- stress management by yoga
- system modeling and simulation
- value education
- waste to energy
- web security
- wireless and mobile computing